5 Best Water Pump for 5.9 Cummins Review and Guide In 2022

It’s time for a 5.9 cummins water pump upgrade really keep your engine’s cool. The Cummins 5.9 truck engine is designed with unmatched reliability, tremendous performance potential, and undoubtedly the BOSS on its own. To prolong its lifetime with efficient performance, you need other additional components that are up to the mark, and the water pump is one of them. Today, I am going to discuss the best water pump for 5.9 Cummins.

The water pump is the most essential component for your car as it keeps your car’s engine cool. It is run by a drive belt that allows the coolant and water to enter the engine. This 5.9 Cummins water pump review will help you to choose the best one for your engine.

Quick Comparison: 5 Best Water Pump for 5.9 Cummins

Get your 5.9 cummins water pump upgrade in place with our recommended picks for your engine.

Top Pick
Top Pick
  • Impeller Design: Closed.
  • Blades: Five.
  • Product weight: 3.2lbs

  • Impeller style: Closed
  • Impeller’s rotation style: Reverse
  • Product weight: 4lbs

  • Impeller style: Open
  • Blades: Seven
  • Product weight: 5.94lbs

  • Flange: 2 bolts
  • Gaskets: Included
  • Blades: Five

  • Blade count: Five
  • Exterior: Machined
  • Weight: 5.78lbs

5 Best Water Pump for 5.9 Cummins Review

1. ACDelco 252-318 Professional Water Pump Kit [5.9 cummins water pump upgrade]

The first water pump on our list is the 252-318 professional water pump kit from ACDelco, a famous brand for 5.9 Cummins water pump upgrade. It is a premium aftermarket pump that runs coolant through the radiator, repeats the cycle, and keeps the engine cool at optimum temperature with its best ability. Compatible with both GM and Non-GM vehicles, it will perform with a 100% leak-free longevity.

Thoroughly tested until perfection, it is sure to please you with its lifespan. No need to worry about the installation process as it comes with all the essentials required for fitting it into your ride. As it is made with high-quality cast-iron, seals are coated as well to provide ultimate durability.

Benefits and Reasons to buy:

  1. It fits a range of both GM and Non-GM transports in a wide range of about 464. So, all you need to do is to check the OEM number, and all is good.
  2. Tested numerous times, the manufacturer provides you with their best service in this water pump. It is made capable of giving a leak-free operation, saving you from the unnecessary worrying.
  3. Seals are coated with precision so that they work with durability and permanence.
  4. Noise-free operation and uninterrupted fluid flow are ensured with this water pump. It will help to keep your ride’s engine healthy, keeping the temperature at a balanced range.
  5. Installation is easy as it is a light-weight pump. The package comes with all the necessary additional components for you to make the process much more comfortable, saving you from extra expenses.

Features and Description:

Material and Build Quality: This water pump is made with high-quality cast iron with a rugged surface that is capable of preventing any wearing and tearing. It is the best water pump for 5.9 Cummins as it is a heavy-duty pump that comes with leak-free durability.

Water pump’s impeller design: The design of this water pump metal impeller suits the 5.9 Cummins water pump impeller. All the blades clamped on the impeller’s eye with a protective seal on top of them. This causes the fluid flow at max, keeping the blades working without any possible damages.

Blade count: Five finely made and polished blades are efficient to work relentlessly with a higher amount of torque as the power is ignited.

Performance: From all the discussions above, you must have guessed how professional and efficient it is in its task. It allows the engine and the radiator to perform at their fullest, as well as it itself plays its part with ease and smoothness.

Installation: Installation is made easy with all the extra components provided with the package upon your order. It includes O-ring gaskets and seals, making the direct installation process more comfortable.

Does it come packed with all essential water pump replacement components?

Surely. Essential water pump replacement components like the O-ring gaskets and coated seals are sent with the package.


  • Brand: ACDelco.
  • Impeller Design: Closed.
  • Blades: Five.
  • Product weight: 3.2lbs.
  • Package dimensions: 6.4 x 5.1 x 6.1 inches
  • The pump is easy to install and carry.
  • Proficient in performance with longevity.
  • Made with high-quality material.
  • Durability is guaranteed.
  • Draining coolant is required before installing the pump.

2. Gates 43526 Water Pump [5.9 cummins water pump upgrade]

This next Cummins 5.9 water pump on our list is reviewed and acclaimed positively by the users for its consistent working ability and satisfying performance over time. It is the Gates 43526 water pump, designed with accuracy for professional use. Built better and more massive than before, it has a substantial and sturdy construction.

In the Gates water pump reviews, you will know that the installation is easy and hassle-free as it gets all the required additional parts with it. It also provides you its utmost performance with efficiency at a great value. If you are looking for a water pump like this, this might be the one for you!

Benefits and Reasons to buy:

  1. This 12 valve Cummins water pump comes with a wide range of features and longevity at a great value. Performance for years is ensured without having to take on much maintenance expenses.
  2. As it is built with metal components, this water pump is excellent at its qualitative ability. It is considered better and strongly built than the previous ones.
  3. Quick and effortless installation is assured with this pump as it is a direct installation one. Moreover, it has been run through tests to make sure your money is worth it.
  4. The package includes all the necessary tools and components needed for installation.
  5. It gives its full support to the engine, increasing its functioning. Smooth and quiet running and an adequate amount of fluid flow are certified.

Features and Description:

Material and Build Quality: Made of iron and stamped steel, its body includes a sturdy construction. It is a heavy-duty pump, confirmed with leakage and crack-free surface.

Water pump’s impeller design: The water pump’s impeller is made with stamped steel, and it has a closed impeller design. The protection seal above the blades makes sure that the blades can work to the fullest while keeping them protected at the same time.

Blade count: Five super-high-quality material blades are attached to this pump that continuously supplies fluid with much torque without disrupting the cooling process. Blade count helps to determine the best Gates vs AC Delco water pump.

Performance: It lets your ride’s engine perform for longer and at a better rate. Compatible with all Cummins engines until 2009, it helps to keep the engine cool and work efficiently. Overheating is prevented as this water pump runs tirelessly to maintain the ideal temperature.

Installation: To install this as a 5.9 Cummins oil pump replacement, you do not need to remove other car parts like the radiator or fan. As it is a direct installation pump, all you need to do is remove the old one and place it in its place.

Does it come packed with all essential water pump replacement components?

This Dodge Cummins water pump comes with an O-ring rubber gasket during purchase, though it does not include bolts. The package also includes an installation guide with it.


  • Brand: Gates.
  • Product weight: 4lbs.
  • Impeller style: Closed.
  • Impeller’s rotation style: Reverse.
  • Easy installation process.
  • It meets the needs to keep the engine cool.
  • Build with high-end quality stamped steel and iron.
  • It fits with all the Cummins engines until 2009.
  • It doesn’t include bolts with the other additional components provided.

3. OAW CR3072 Engine Water Pump [5.9 cummins water pump upgrade]

The OAW CR3072 water pump 5.9 Cummins is cheered as really a ‘WOW’ product by Cummins engine users. It is truly a fantastic product designed to give quality, fitting, and function the most priority. In the OAW water pump reviews, I want to inform you that it can maintain the coolant flow supply at an excellent level for a long lifespan.

No compromises are made in its making as it is built with high quality stamped steel and metal. It is compatible with more than over 300 OEMs, vehicles from the US, and other countries. Effortless installation, great value, and long-lasting durability are assured if you choose to go with this one.

Benefits and Reasons to buy:

  1. All the equipment used and assembled to build this water pump are followed up with the Original Equipment Specification (OES) so that you get the precise fitting and outmost function from it.
  2. A 1-year warranty and 30 days’ return policy is available if you face any incontinence after purchasing this OAW water pump.
  3. Installation is uncomplicated and effortless. Moreover, gaskets are provided to relieve you from extra costs.
  4. Great product at this value. It costs much less than the other water pumps out there in the market with the same features.
  5. It fully supports to keep your truck’s Cummins 5.9 turbo diesel engine at a calm state, which lets the engine perform fantastically.

Features and description:

Material and Build Quality: Original Equipment Specification is maintained in the pump’s making, meaning all the components used are 100% original. It is made with best quality stamped metal and steel that is capable of avoiding any wrinkle. Seals are made with John Crane carbon graphite ceramic to avoid a 5.9 Cummins water pump leak.

Water pump’s impeller design: It includes an open impeller. The vanes (blades) are free on both sides that are fitted with the shafts directly. The torque allows the impeller to rotate at full speed, which continues the fluid flow.

Blade count: There are seven blades (vanes) attached to the impeller hub. These blades are made of high-quality components to give their best service without any damage.

Performance: Performance quality is commendable for this OAW CR3072 water pump. Long-lasting durability, efficiency, and noise-free operation are what you will receive after the effortless installation is done. But it is not the best choice for 6.7 Cummins water pump replacement.

Installation: As it is said earlier, installation is not a thing to worry about it. Beginner free and installation is made possible, and you can get done with the process within about an hour.

Does it come packed with all essential replacement components?

Indeed. It comes with gaskets and an installation guide for you to make the installation job done.


  • Brand: OAW.
  • Blades: Seven.
  • Impeller style: Open.
  • Product weight: 5.94lbs.
  • Package dimension: 9.2 x 5.9 x 5.2 inches.
  • Budget-friendly water pump.
  • Manufactured with high-quality materials.
  • Uncomplicated to install.
  • The package includes gaskets.
  • Open impeller style often causes the blades to get damaged.
  • The package sometimes does not consist of the gasket.

4. Rareelectrical NEW CUMMINS 6B WATER PUMP [5.9 cummins water pump upgrade]

The next one on our list is the New Cummins 6B Water Pump from Rareelectrical that is the best one for the 2006 Dodge Cummins water pump. This lightweight water pump comes with a long-lasting durability that will also help increase your truck’s 5.9 engine’s performance efficiency. Easy to install, this one is made with fine and new materials that will give service without any wear and tear.

An uninterrupted water cycle from the radiator to the motor is guaranteed, keeping the constant temperature unaffected. It is tested numerous times by the manufacturer before appearing in the market and also provides you with a 1-year guarantee. All you need to do is match with your OEM part number for precise fitting, and you are good to go!

Benefits and Reasons to buy:

  1. Whenever you decide to change your vehicle’s water pump, you would want to get one that will give long-lasting durability. Keeping this in the light, Rareelectrical has introduced this 6B water pump, which is capable of working for a very long-lifetime without causing any disruptions and maintenance hassle.
  2. Among the other water pumps, this 6B one comes at a really affordable price and offers the best companionship to the different parts of your truck at a great value.
  3. Made with high-quality components and run through a number of tests, it is ensured that you get the best out of this water pump.
  4. Gaskets are one of the main components that are expected to come along with the water pump, and this Rareelectrical 6B water pump has got them with it!
  5. If you choose this water pump as the replacement, you get a high-end quality water pump and a 1-year warranty with it.

Features and Description

Material and Build Quality: The manufacturer used high-quality iron to build this water pump so that it brings along a long life-time with it. This heavy-duty pump is designed with a precisely mounting surface to give uninterrupted and fast water flow without any leakage, maintaining the coolness while in operation.

Water pumps’ impeller design: It is a closed impeller, attaching all the vanes in one casting between two different discs. These discs provide protection to the blades from any type of damage.

Blade count: Five fully furnished iron aluminum mixed blades (vanes) are attached to provide rapid water flow to the radiator with a high torque amount. It is the best blade count compared to GMB water pumps.

Performance: You won’t have to give much thought about this 6B water pump’s performance if you choose to go for it as it is capable of providing its best to keep the engine’s and other components’ health unharmed.

Installation: This 6B water pump is light-weight, meaning it is comparatively easy to carry and install once it fits your criteria of requirements like; the OEM part number of your truck’s engine. But, it can’t be installed as a 6.7 Cummins water pump upgrade.

Does it come packed with all essential replacement components?

Yes! High-quality gaskets are provided to make the installment of this water pump easy so that you don’t need to buy any additional components to place it in the truck.


  • Weight: 7lbs.
  • Flange: 2 bolts.
  • Gaskets: Included.
  • Warranty: 1-year.
  • Blades: Five.
  • Product dimensions: 6 x10 x 10 Inches.
  • Easy to lift, carry, and install.
  • The pump comes with high-quality gaskets.
  • It provides a warranty for a year.
  • The pump performs with its full efficiency.
  • Weight of the product is a little bit higher.

5. Airtex AW6158 Engine Water Pump [5.9 cummins water pump upgrade]

Airtex is a company with quite an OK reputation in the automobile business. I would assure you that their products are acclaimed as reliable, durable, and efficient by hundreds of users in the Airtex water pump reviews. To add to that list, they have designed the AW6158 water pump with such precision.

The pump is built with iron; is designed for applications that are driven by an accessory belt. Moreover, the package comes with all the necessary components needed for installment. This pump gets your job done without demanding much maintenance, also providing a lifetime warranty.

Benefits and Reasons to buy:

  1. The material used to build this pump is high-quality iron, which prevents any type of wrinkle or leakage in the pump, giving you a lifetime service.
  2. This is a light-weight water pump, weighing up to 5.78lbs. Effortless to carry and install, just as you would look for.
  3. The manufacturer provides a lifetime warranty along with often free servicing or replacement if there is any issue regarding its performance. All you need to do is contact them, and they will take care of it!
  4. It is a 100% factory tested product, meaning you will get the best out of it as it has been approved after passing several tests by the makers.
  5. A durable and perfectly precise mounting surface is guaranteed, giving it the ultimate finishing.

Features and Description:

Material and Build Quality: High-end wear-resistant iron is used in this pump’s making with a rugged look surface, making it resistant to any kind of wear and tear. It is designed for accessory belt-driven applications, keeping your ride at an optimum temperature.

Water pump’s impeller design: The water pump’s impeller is a closed impeller style. It keeps the blades safe from any external damage as well as provides an efficient amount of fluid through the radiator without any disturbances.

Blade count: It has finely polished five shiny blades attached to it. These blades are designed and upgraded to make sure your ride gets the most coolant flow.

Performance: Noise-free performance with efficiency is what you will receive if you decide to go with this pump. It will give you the utmost and effortless service you can get for your truck.

Installation: It is the best for the 1998 Dodge ram 1500 water pump replacement. Installation is easier than ever! Gaskets and other additional tools are sent with the package to relieve you from buying them. You just need to make sure the size fits your ride. Moreover, an installation guide is provided to make sure you can work it without hassle.

Does it come packed with all essential replacement components?

Absolutely YES! You will get a gasket, guideline, and other necessary tools along with the package.


  • Blade count: Five.
  • Weight: 5.78lbs.
  • Product dimensions: 7.54 x 5.48 x 6.14 Inches.
  • Exterior: Machined.
  • Light-weight and easy to carry.
  • Effortless installation process.
  • Comparatively affordable.
  • It provides a lifetime service with efficiency.
  • Long-lasting durability is guaranteed.
  • The price is a little bit higher than usual.

5.9 cummins Water Pump Basic Overview:

Best Water Pump for 5.9 Cummins

Since 1989, a Cummins diesel engine has Dodge Ram pickups the option of being power. From 1998 to 1993 the 5.9L has 12 valves. The most sought-after diesel engine is the 1994 to 1998 5.9L Cummins. It set apart the Bosch P7100 in it, and the rest of the thing is similar to the previous model. The introduction of it was essential so that the 5.9L Cummins can meet emission requirements.

In order to satisfy tighter pollution requirements, Cummins produced the 5.9L ISB. From 1998 until 2002, this water pump ran both Dodge RAM 2500 and 3500 trucks. The VP44 injection pump replaced the P-pump, and this engine also released the 24-valve cylinder head.

In 2003 the ISB CUMMINS 5.9L common-rail variant started to power heavy-duty Dodge Ram trucks, and it lasted until 2007. With this new engine, the main difference was that it depends entirely on electronic controls to function. It was 10 dB quieter also than its own.

In 2004 Cummins made several changes for improvements with engine programming, the pistons of the engine, the turbo in the engine, and the spray angle of the injector, so there were several significant differences in the 2004.5 to 2007 5.9L version. Federal emission standards involved another adjustment to the Cummins diesel engine.

In 1998, Dodge truck sales were dropping, that’s why Dodge made a model that includes the feature of a huge Cummins turbo diesel engine in a final attempt for saving their truck business. These straight-six engines were far more advanced than diesel trucks from GM or Ford, so Dodge’s engineers had to create the body and suspension much more robust.

As a result, Cummins 5.9L water pump is reliable, high-duty performance, and high duty diesel engine over the years. This water pump leads the world in reliable and highly efficient diesel truck engines and the manufacturing of clean.

The displacement of Cummins 5.9 water pump specs is 350ci. The injection system of this water pump is Bosch high-pressure common-rail and offers a fixed geometry turbocharger.

The longevity of the 5.9 Cummins depends on the preventive and proper maintenance of the water pump. The average mileage of the water pump is between 17 & 22 that depends on your driving style and the configuration. It may hold out forever. If you take your water pump’s care, it will provide more comprehensive services.

This Cummins water pump includes a Bosch high-pressure injection system that is a common-rail fuel injection system. It provides a simple system fixed geometry turbo with a 58mm compressor wheel, 58mm turbine wheel and internal wastegate.

The Cummins 5.9L ISB has gone through some changes since it was first introduced in 1989, and there were three generations of this motor.

YearPeak hpTorque (lb-ft)PumpValves

Generation 3 2003-2007, 5.9L (359 in3) inline 6-cylinder, 4-stroke, Turbocharged / Aftercooled (MY91.5+)

YearPeak hpTorque (lb-ft)PumpValves

5.9 Cummins Specs

5.9 cummins specs

Image Source


Note – The following ratings are only applicable to Dodge pickups.

Model YearHorsepowerTorque
1998 – 2000• 215 hp @ 2,700 RPM (auto trans)
• 235 hp @ 2,700 RPM (man trans)
• 420 lb-ft @ 1,600 RPM (auto trans)
• 460 lb-ft @ 1,600 RPM (man trans)
2001 – 2002• 235 hp @ 2,700 RPM
• 245 hp @ 2,700 RPM (H.O.)
• 460 lb-ft @ 1,400 RPM
• 505 lb-ft @ 1,600 RPM (H.O.)
2003• 235 hp @ 2,700 RPM
• 305 hp @ 2,900 RPM (H.O.)
• 460 lb-ft @ 1,400 RPM
• 555 lb-ft @ 1,400 RPM (H.O.)
2004• 235 hp @ 2,700 RPM (CA)
• 305 hp @ 2,900 RPM (std)
• 325 hp @ 2,900 RPM (H.O.)
• 460 lb-ft @ 1,400 RPM (CA)
• 555 lb-ft @ 1,400 RPM (std)
• 600 lb-ft @ 1,600 RPM (H.O.)
2005 – 2007325 hp @ 2,900 RPM610 lb-ft @ 1,600 RPM

5.9 Cummins Water Pump Differences

5.9 Cummins water pump differences

Source Image

Gates vs AC Delco water pump:

Gates and ACDelco are the best water pumps in the market. Gates parts are made in China, whereas ACDelco is commonly made in Mexico. Gates offers a metal gasket along with the package, whereas ACDelco doesn’t. Gates also come at a lower price than ACDelco.

6.7 Cummins water pump overview:

There are lots of water pumps for 6.7 Cummins in the market. If you like to buy an aftermarket water pump, it would be a great choice to go for a Gates or ACDelco water pump. These are not high in price and provide the best performance. These water pumps keep your engine at a good temperature and increase performance.

Do you know What is the horsepower of a 5.9 Cummins? Ans- The horsepower of a 5.9 Cummins is 305-325 HP.

Is a 5.9 or 6.7 Cummins better?

Both 5.9L and 6.7L Cummins has Bosch high-pressure common-rail injection system. The 2005 to 2007 model of 5.9L has produced 325 horsepower and 610 lb-ft factory Torque. The model of 2007.5 to 2012 model of 6.7L water pump produces 350 horsepower and 650 lb-ft factory Torque as well as 2013 to 2014 models produces 385 hp and 850 lb-ft Torque.

The 6.7 provides at low RPM a lot of torque because it includes the 4.88 inches increased stoke than the 5.9L. The 5.9L Cummins has a simple system fixed-geometry turbo with 58mm compressor wheel 58mm turbine wheel and internal wastegate.

Still, the 6.7L facilitates with a variable geometry turbocharger with 60mm compressor wheel that makes this water pump much more responsive than the 5.9 Cummins. The 6.7 Cummins provides a beneficial exhaust brake function, Diesel Particulate Filter (DPF), Exhaust Gas Recirculation (EGR), NOx Absorption Catalyst (NAC), Diesel Oxidation Catalyst (DOC), and Selective Catalytic Reduction (SCR).

5.9 Cummins vs 6.7 Cummins:

Is the 5.9 or 6.7 Cummins better? Well, that can’t be answered simply. There are several factors to determine this.

The 5.9 Cummins has increased stroke performance, whereas the 6.7L has greater torque performance. The 5.9 Cummins generally has around 300 Horsepower. On the other hand, 6.7 has 350 to 385 Horsepower. But the fixed geometry turbo of the 5.9 Cummins is more authentic than the 6.7 Cummins variable geometry unit.

6.7 Cummins water pump replacement-

You need to replace your water pump of 6.7 Cummins when the coolant leaks and the engine overheats. Replacement cost differs between $100-$300 depending on the brand you’re choosing and the labor costs. If you can change the water pump yourself, which is not a big deal, then you could save a fortune.

 6.7 Cummins water pump problems:

There are several problems you may face with your 6.7 Cummins water pump. These are-

  • Coolant leak
  • Howling sounds
  • Engine overheating

5.9 cummins high flow water pump:

This 5.9 Cummins high flow water pump includes gaskets that require efficient and quick replacement. It facilitates with OEM standard of performance. The installation and maintenance of this water pump are easy and hassle-free.

This pump offers a stamped steel impeller, OEM style impeller, cast iron housing and hose adapter. O-ring also present in this pump, and the high flow water pump has an impressive flow rate. It contains lightweight because the material of this water pump is aluminum for providing corrosion-free service.

The Cummins high flow water pump is a basic model that can entirely replace in the older models of Cummins and performs as any stock component. The high-flow water pump is a classic quality part of the replacement.

5.9 cummins water pump leak reasons:

The 5.9 Cummins water pump can become a leak and get worse. The coolant leaks due to the weep hole that stands between the seals for separating the oil side from the coolant side.

If the water pump becomes leaks, it can occur the failure of bearing. It leads to more and more leak. For avoiding this leak pour water pump stop-leak product or a liquid radiator-like Bar’s Liquid Stop Leak into the radiator of the vehicles. In front of the water pump, the radiator locates.

If you poured the liquid stop-leak product into the radiator, it flows in possible seals and the water pump seal, or it will slow the leak. Ensure the vehicle ran before pouring the stop-leak liquid into the vehicle as well as the radiator of the vehicle is not warm.

5.9 cummins water pump napa:

5.9 Cummins water pump Napa Tru-Flow water pump provides OE fit, function, and form for cars. This Tru-flow water pump facilitates extremely wide coverage. Every pump includes unified seals and a one-piece bearing and assembly for maximizing the life of the bearing and ensuring a leak-free operation of the water pump.

This water pump also includes a precisely balanced impeller. The 5.9 Cummins water pump impeller ensures optimum engine performance by providing the specified coolant flow.

6.7 cummins water pump upgrade:

The Cummins 6.7 water pump is better because of its upgrades. The 2007 line of the Dodge Ram diesel truck first put in the 6.7L engine. With over 40 per cent of the 5.9L water pumps internal parts carrying over, the 6.7 Cummins arrived on the scene by ensuring it was off to a strong start because the 5.9L Cummins had service aftermarket support, and a wide variety and fame for reliable performance of parts.

The 6.7 Cummins water pump provides at low RPM a lot of torque because it includes the 4.88 inches increased stoke maintenance. This pump comes fitted with a full range of emissions control parts such as an EGR (Exhaust Gas Recirculation), a NAC (NOx Absorption Catalyst), a DOC (Diesel Oxidation Catalyst), SCR (Selective Catalytic Reduction), and DPF (Diesel Particulate Filter) that started in 2013. The SCR component became standard with Cummins 6.7L water pump engines after that.

The 6.7 Cummins water pump facilitates with variable geometry charger with 60mm compressor wheel. The injector of the 6.7L rates for higher pressure and design to handle it. It requires less voltage for operation.

This water pump 6.7 Cummins uses the exhaust brake that makes a restriction in the exhaust system, creating significant back pressure to slow the engine speed and providing some extra braking. It also helps in preventing the sticking turbo issue.

2006 5.9 cummins water pump:

2006 5.9 Cummins water pump provides a standard rail fuel injection system and electronically controlled. It is the best water pump for 5.9 Cummins for its durable, reliable performance, and ability to withstand high mileage.

This water pump provides facilities for keeping the vehicle’s EGR-free for a couple more years. It provides more horsepower and torque. It includes a simple system fixed geometry turbo and has two different turbochargers. This turbo is a simple system with a 58mm turbine wheel, 58mm compressor wheel, and internal wastegate.

This water pump 5.9 Cummins facilitates auto manual transmission and produces 325 horsepower as well as 610 lb-ft Torque. This 5.9 Cummins diesel water pump is perhaps the most durable engine that has significant towing power on the automotive market. Source

This 2006 dodge Cummins water pump is a heavy-duty water pump, and it also uses in agricultural, marine and construction equipment. This water pump offers 24 valves with six cylinders. This pump applies a Bosch high-pressure injection system.

Cummins water pump failure symptoms:

The most common symptom of the Cummins water pump failure is overheating the engine. The vehicle produces steam by the car radiator, low coolant level, inconsistent temperature gauge readings, fluid leak, unusual sounds- a high pitched growling or whining sound comes from the front of the engine also indicates the failure of the water pump.

The bearing damage, damage of broken shaft, deposits, heater does not create much heat, scale, and sludge build-up, and corrosion on the surface, etc. are other indicators of the failure of the water pump.

The Cummins water pump includes bolts and holes, and the hole is on the dry side of the seals. Here the seals also have, and it will go not good that is generally pretty much. At first, the seals go wrong then the long enough bearing surfaces, and then a total failure occurs. After leaking the seals, it comes out by the hole and spraying water around the engine it indicates the Cummins water pump failure.

One of the primary symptoms of Cummins water pump failure is the leakage of the weep hole locates in around the shaft of the water pump. Leakage from the mounting surface is another symptom of Cummins failure that may lead to a severe mechanical problem and a failure of the seals to the engine or the water pump itself.

Loose attachment to the engine can harm the impeller blades. A loose pump leads to failure that waits for happening such as changing the pump’s speed intermittently, causing shaft stress, and going out of the alignment of pulley or gear.

Another symptom is grinding or squeaking from pulley or gear that results due to wrong or lose bearings and pulley. Corrosion or cavitation inside pump housing is another symptom of Cummins water pump failure.

Read More : How to Prevent Water Pump Failure

How to Replace a Water Pump?

The procedure of a Cummins water pump replacement is:

  1. Take time for making the engine cool.
  2. Make a clean working area if there have any possibility to drain it
  3. Equip all the parts and tools
  4. Prepare a pail to collect the coolant and old water pump.
  5. Ready new water and coolant
  6. Remove the water and coolant from the system
  7. Disconnect the negative wire of the battery.
  8. Detach the belt drive component
  9. Take off the belt ( prepare a new one for replacing, if you want to replace it )
  10. Detach the hose from attaching with the water pump.
  11. Lose the bolt of the pump housing from the engine block
  12. Take out the old pump
  13. Remove the old seal or gasket or else ensure the cleanliness of the mounting surface by remaining old sealant.
  14. Review the other cooling system service parts such as- thermostat, coolant hoses and pressure caps.
  15. Erase the engine surface area without scoring it.
  16. Prepare the new pump by using silicone grease
  17. Attach some amount of the Loctite on the bolts
  18. Set the new water pump
  19. Replace new gaskets and seals
  20. Attach sealants if the manufacturer recommends it.
  21. Fix and tight the bolts into place
  22. Restore the belt into the place.
  23. Reconnect the hose
  24. Reinstall the rest of the system in reverse order and reassemble everything
  25. Reattach the negative wire of the battery
  26. Make sure the pressure for system integrity
  27. Run the engine, and all are done.

How to change water pump on dodge ram 1500 :

The changing process of the water pump on dodge ram 1500 is:

If you get a sound or leak that comes from the Dodge Ram, you should replace at first the O-ring. If it doesn’t solve the problem, you have to replace your water pump. The water pump replacement process that depends on the engine is below:

Drain the cooling system by removing the fluid. Detach the negative cable of the battery.

Displace the clutch assembly and separate the wiring harness retainer from the water pump that works with both the 3.7L & 4.7L engines. Also, separate the lower hose. If you have a plan to reuse it, shift the fan shroud and assembly and remain fan clutch upright for remaining the fluid of the silicone from leaking.

Take out the heater hose and the lower radiator hose with the tube, the bypass hose, the drive belt for accessory, and the pulley of the water pump that works with the 5.9L, 5.2L, and 5.9L Engines.

Detach the washer bottle and coolant recovery bottle, the alternator brace and A/C compressor, the heater and radiator hoses, the fan shroud, the belt tensioner, and the idler pulleys as well as the cooling fan of the engine that works with the 5.7L engine.

Remove the engine cooling fan and shroud, the washer solvent bottle, the accessory drive belt, the upper radiator hose, the heater hose, and lower radiator hose, the bypass hose, and the water pump pulley that works with the 8.0 engine.

Displace the water pump and put it in the new pump. Tighten the bolts of 18-foot pounds.

Use the break bar. Reattach and reinstall the rest of the system in reverse order as well as reassemble everything. Reconnect the negative cable of the battery.

Restock the cooling system and start the water pump engine and after getting the average temperature check the leaks.

How to Install a Water Pump – Dodge Ram Cummins Diesel 5.9L WP-2141 AW6158

2009-02 Dodge Ram 2500 Pickup (5.9L L6) And

2009-02 Dodge Ram 3500 Pickup (5.9L L6)

5.9 Cummins Water Pump Replacement

How do I know if my water pump is bad on my Cummins?

  1. If you find any “leakage in the weep hole” that locates around the shaft.
  2. Corrosion or cavitation inside pump housing is a bad sign of Cummins water pump.
  3. Leakage from the mounting surface is a more serious mechanical problem or a failure of the seal to the engine or the pump itself.
  4. Squeaking or grinding from pulley or gear due to a bad bearing or wrong pulley.
  5. Loose attachment to the engine that can harm the impeller blades.


What’s the best year Dodge Cummins to buy?

  • 1989 to 1993 Dodge Ram 2500 & 3500 – Timeless diesel
  • 1999 to 2003 Super Duty – Best Budget Diesel
  • 2003 to 2008 Dodge Ram 2500 & 3500 Heavy Duty – Best Used Diesel Value
  • 2006 to 2007 Chevrolet or GMC 200HD & 3500HD – Best Pre-Emission Diesel
  • 2008 to 2010 Super Duty – Best Diesel to Modify
  • 2010 to 2013 Ram 2500 Heavy Duty – Most Capable diesel
  • 2020 Chevrolet or GMC 1500 – Best Hot – Rod Diesel
  • 2020 Super Duty – Best Diesel for Towing
  • 2020 Chevrolet or GMC 2500HD & 3500HD – Best Diesel Drivetrain
  • 2020 Ram 3500 Heavy Duty – First 1,000 lb-ft Diesel

What is the best tuner for a 5.9 Cummins?

The best tuner for a 5.9 Cummins water pump is-

  • Edge Products Insight CS2 Monitor.
  • Smarty S-06 PoD –the best tuner for 5.9 Cummins.
  • Smarty Touch for 5.9 Cummins.
  • Superchips flashpaq F5.
  • Edge Products CTS2 Diesel Evolution.
  • MADS Smarty Touch Programmer S2G.
Best Water Pump for 7.3 Powerstroke

Water Pump for 7.3 Powerstroke – Buyer’s Guide

Best Water Pump For 6.0 PowerStroke



How many miles can a 5.9 Cummins go?

The longevity of the 5.9 Cummins depends on the preventive and proper maintenance of the water pump. If you take your water pump’s care, it will provide more comprehensive services. The average mileage of the water pump is between 17 & 22 that depends on your driving style and the configuration. It may hold out forever in between overhauls, 100,000 miles longer than the FORD or GM and the TD lasting 350,000 miles that the Cummins website speaks about it.

Is a 12 or 24 valve Cummins better?

The 12 valves and 24 valves Cummins both are better. Both of the engines have great potential by sticking a large turbo on them. The 12 valve Cummins water pump has a little bit more reliability than the 24 valves. The 12 valve facilitates the mechanical P7100 pump. It requires the modified parts of the injection pump and the 24 valve facilitates with a potable tuner that can tune easily. 24 valve Cummins is much louder than the 12v Cummins water pump at the engine. The 12 valves offer a 6BT Cummins engine, and 24 valves offer an ISB engine.

What year 5.9 Cummins is best?

1994 12 valve Cummins fitted the Dodge Ram trucks have 420 lb-ft of torque and 175 horsepower when fitted with the NV4500 5-Speed manual transmission. The 1994 Cummins trucks only delivered 160 horsepower and 400 lb-ft of torque with an automatic 47RH transmission. 1996 to earlier 1998 model of the 5.9L Cummins is best for the excellent fuel economy, bulletproof reliability and overall performance.

Should I buy a 5.9 or 6.7 Cummins?

The 6.7 Cummins is an upgraded and best aftermarket water pump than the 5.9L. The 6.7 provides at low RPM a lot of torque because it includes the 4.88 inches increased stoke whereas the 5.9L includes 4.72 inches. The 5.9 offers a simple system fixed geometry turbo with a 58mm turbine wheel, internal wastegate, and 58mm compressor wheel while 6.7L provides a variable geometry turbo with a 60mm compressor wheel. The 6.7L has a powerful braking ability, and it uses an exhaust brake. The 5.9L Cummins and 6.7L Cummins water pump both use a Bosch high-pressure common-rail fuel injection system. But the 6.7L Cummins rates high pressure and design to handle it. The 67L Cummins produces more horsepower than the 5.9L Cummins. The purchase of a water pump depends on the features that you want in your water pump, your vehicle’s coolant system and the Cummins water pump price.

Why is the 5.9 Cummins so popular?

The 5.9 Cummins water pump is so popular because it is a simple design. This pump facilitates tremendous performance rugged and potential, unmatched reliability, and million-mile durability that sum up the appeal of the 12 valves 5.9L 6BT Cummins. The 5.9L 6B Cummins with 12 valves provides facilities of 230 horsepower, a p7100 inline injection pump, and 440 lb-ft of torque. This water pump includes the forged-steel connecting rods, heavy-duty rod bolts, and six 12-mm diameter head bolts in per cylinder.

Looking for Water Pump For 6.0 PowerStroke?

Best Water Pump For 6.0 PowerStroke


Choosing the best water pump for 5.9 Cummins is tricky than choosing the  6.7 Cummins water pump. These are the best aftermarket water pump suggestions for the Cummins 5.9 that work great, keeping the optimum temperature balanced.

I hope this article helped you to get the most suitable pump for your ride. Do leave us your valuable feedback to let us know your experience. Source

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