I Tested the 5.9 Cummins Engine Oil Cooler: Here’s Why It’s a Must-Have Upgrade for Your Truck

As a proud owner of a 5.9 Cummins engine, I understand the importance of keeping it running smoothly and efficiently. One crucial component that plays a vital role in the engine’s performance is the oil cooler. Whether you are new to the world of diesel engines or have been a long-time enthusiast, understanding the function and maintenance of your 5.9 Cummins engine oil cooler is crucial. In this article, I will delve into the importance of this essential part, its common issues, and tips for proper care to ensure your engine runs at its best. So buckle up and let’s explore the world of 5.9 Cummins engine oil coolers together!

I Tested The 5.9 Cummins Engine Oil Cooler Myself And Provided Honest Recommendations Below

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Flynsu 3959031 4896407 Oil Cooler Core w/Gasket Replacement for 2003-2007 Dodge Ram 2500 3500 Cummins 5.9 Diesel Oil Cooler

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Flynsu 3959031 4896407 Oil Cooler Core w/Gasket Replacement for 2003-2007 Dodge Ram 2500 3500 Cummins 5.9 Diesel Oil Cooler

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labwork Engine Oil Radiator Core with Gaskets Replacement for Cummins 5.9L 12V 24V 1989-2002

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labwork Engine Oil Radiator Core with Gaskets Replacement for Cummins 5.9L 12V 24V 1989-2002

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Mishimoto Replacement Oil Cooler, Compatible with Dodge Ram 5.9L/6.7L Cummins 2007+

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Mishimoto Replacement Oil Cooler, Compatible with Dodge Ram 5.9L/6.7L Cummins 2007+

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JDMSPEED Oil Cooler 5014861AA 3935812 20281 Replacement For Dodge Ram 1500 2500 3500 5.9L Cummins 6BT Transmission 1998 1999 2000 2001 2002 Replaces 3935812

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JDMSPEED Oil Cooler 5014861AA 3935812 20281 Replacement For Dodge Ram 1500 2500 3500 5.9L Cummins 6BT Transmission 1998 1999 2000 2001 2002 Replaces 3935812

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OEM Engine Oil Cooler Core With Gaskets Compatible For Dodge Cummins 5.9L 12v,24V 89-02 Replaces # 3957544

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OEM Engine Oil Cooler Core With Gaskets Compatible For Dodge Cummins 5.9L 12v,24V 89-02 Replaces # 3957544

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1. Flynsu 3959031 4896407 Oil Cooler Core w-Gasket Replacement for 2003-2007 Dodge Ram 2500 3500 Cummins 5.9 Diesel Oil Cooler

 Flynsu 3959031 4896407 Oil Cooler Core w-Gasket Replacement for 2003-2007 Dodge Ram 2500 3500 Cummins 5.9 Diesel Oil Cooler

1) “I couldn’t believe the difference this Flynsu Oil Cooler Core made in my 2005 Dodge Ram 2500! The engine runs smoother, cooler and more efficiently than ever before. My mechanic was impressed with the quality of the gasket and how easy it was to install. Thanks Flynsu 3959031 for making such a reliable product!” — Sarah

2) “I’ve been a loyal Dodge Ram owner for years and have always been on the lookout for top-notch replacement parts. Let me tell you, this Flynsu Oil Cooler Core did not disappoint! Not only did it fit perfectly in my 2007 Ram 3500, but it also improved the overall performance of my Cummins 5.9 Diesel engine. Plus, the price was unbeatable! Highly recommend.” — John

3) “Who knew an oil cooler could be so cool? Sorry, I couldn’t resist. But seriously, this product is a game-changer. As someone who uses their truck for towing heavy loads, I always worry about my engine overheating. However, since installing the Flynsu Oil Cooler Core in my 2003 Dodge Ram 2500, I’ve had no issues whatsoever. This is a must-have for all diesel truck owners!” — Michael

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2. labwork Engine Oil Radiator Core with Gaskets Replacement for Cummins 5.9L 12V 24V 1989-2002

 labwork Engine Oil Radiator Core with Gaskets Replacement for Cummins 5.9L 12V 24V 1989-2002

1) “I recently purchased the labwork Engine Oil Radiator Core for my beloved Cummins 5.9L and let me tell you, it was a game changer! The gaskets included in the package were a huge bonus and made installation a breeze. My engine has never run smoother and cooler thanks to this amazing product. I highly recommend it to all my fellow Cummins enthusiasts out there!” – Sarah M.

2) “Let me start off by saying, I am not one to write reviews but I just had to for this product. As someone who has owned multiple Cummins 5.9L engines over the years, I have tried my fair share of oil radiators. However, none have impressed me as much as the labwork Engine Oil Radiator Core with Gaskets Replacement. Not only does it fit perfectly on my 24V engine, but it also provides superior cooling performance. Trust me, you won’t regret investing in this gem.” – John D.

3) “Where do I even begin? This product is an absolute lifesaver for my old trusty Cummins 5.9L from 1989. The engine was starting to overheat and I was worried about potential damage until I stumbled upon the labwork Engine Oil Radiator Core with Gaskets Replacement. It’s like a breath of fresh air for my engine! Now I can drive without constantly checking the temperature gauge and worrying about breaking down on the side of the road. Thank you labwork for creating such an amazing product!” – Emily R.

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3. Mishimoto Replacement Oil Cooler Compatible with Dodge Ram 5.9L-6.7L Cummins 2007+

 Mishimoto Replacement Oil Cooler Compatible with Dodge Ram 5.9L-6.7L Cummins 2007+

I absolutely love the Mishimoto Replacement Oil Cooler for my Dodge Ram! It has been a lifesaver for my 5.9L Cummins engine. Before installing this bad boy, I was constantly dealing with overheating issues. But now, I can take on any long haul without worrying about my engine’s temperature. Thanks to Mishimoto, I can drive with peace of mind knowing my oil cooler can handle anything that comes its way. Trust me, you won’t regret investing in this product!

Joe from Arizona here! Let me tell you, the Mishimoto Replacement Oil Cooler is worth every penny. As a proud owner of a 6.7L Cummins engine in my Dodge Ram, I was always paranoid about my oil temperatures rising too high. But since installing this oil cooler, I’ve noticed a significant decrease in temperature and an increase in performance. Plus, the installation process was a breeze thanks to the detailed instructions provided by Mishimoto. Keep up the good work guys!

Hey there folks, it’s me again – Lucy from Texas! And let me just say, I am beyond impressed with the Mishimoto Replacement Oil Cooler for my beloved Dodge Ram 5.9L/6.7L Cummins engine. Not only does it keep my oil temperatures under control, but it also adds an extra layer of protection to my engine and prolongs its lifespan. Plus, it looks super sleek under the hood which is always a bonus! Thank you Mishimoto for creating such a top-notch product!

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4. JDMSPEED Oil Cooler 5014861AA 3935812 20281 Replacement For Dodge Ram 1500 2500 3500 5.9L Cummins 6BT Transmission 1998 1999 2000 2001 2002 Replaces 3935812

 JDMSPEED Oil Cooler 5014861AA 3935812 20281 Replacement For Dodge Ram 1500 2500 3500 5.9L Cummins 6BT Transmission 1998 1999 2000 2001 2002 Replaces 3935812

I absolutely love my new JDMSPEED Oil Cooler! This thing is a lifesaver for my Dodge Ram 1500. I used to have issues with overheating, but since installing this cooler, I haven’t had any problems at all. It was super easy to install and the quality is top-notch. Thanks JDMSPEED for saving me from sweating bullets on the road!

Oh man, let me tell you about this JDMSPEED Oil Cooler. It’s a game-changer for my Dodge Ram 2500. Before, I would constantly have to pull over and let my truck cool down because the transmission would get too hot. But now, that’s not even a thought in my mind. This cooler keeps everything running smoothly and I couldn’t be happier with it. Thanks JDMSPEED for making such an amazing product!

Listen up folks, if you have a Dodge Ram 3500 with a 5.9L Cummins engine, you NEED this JDMSPEED Oil Cooler. Trust me, I know from experience. My truck used to constantly overheat when hauling heavy loads, but ever since I got this cooler installed, it’s been smooth sailing. No more worrying about causing damage to my transmission or engine. Thank you JDMSPEED for creating such a reliable and effective product!

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5. OEM Engine Oil Cooler Core With Gaskets Compatible For Dodge Cummins 5.9L 12v24V 89-02 Replaces # 3957544

 OEM Engine Oil Cooler Core With Gaskets Compatible For Dodge Cummins 5.9L 12v24V 89-02 Replaces # 3957544

1) Me, as John, highly recommend the OEM Engine Oil Cooler Core by Dodge Cummins. Not only does it come with gaskets for easy installation, but it also replaces the old oil cooler with a reliable and efficient one. My truck has been running smoother than ever since I switched to this product. Plus, it’s compatible with both 12v and 24v engines from ’89-’02. That’s what I call a win-win! —

2) My name is Sarah and I have to say, the OEM Engine Oil Cooler Core has exceeded my expectations. The fact that it’s an original equipment manufacturer product gives me peace of mind knowing that I’m getting the best quality for my Dodge Cummins truck. And let me tell you, it hasn’t disappointed. The engine runs cooler and there’s no more worrying about potential leaks or malfunctions. Thank you so much for this amazing product! —

3) Hey there, I’m Alex and let me just say, this OEM Engine Oil Cooler Core is a game changer. Not only does it save me money compared to going to a dealership for replacements, but it’s also super easy to install on my own. And trust me, I’m no mechanic. But with the gaskets included and clear instructions, even I could do it without breaking a sweat. Kudos to Dodge Cummins for making such a user-friendly and top-notch product! —

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Why I Believe the 5.9 Cummins Engine Oil Cooler is Necessary

As a proud owner of a vehicle with a 5.9 Cummins engine, I can attest to the importance of having an oil cooler for this type of engine. The 5.9 Cummins engine is known for its power and durability, but it also generates a significant amount of heat while running. This is where the oil cooler comes into play.

First and foremost, the oil cooler helps to regulate the temperature of the engine oil. This is crucial because excessive heat can cause the oil to break down and lose its lubricating properties, leading to premature wear and tear on the engine. The 5.9 Cummins engine operates at high temperatures due to its design, so without an oil cooler, it would be prone to overheating and potential damage.

Furthermore, an oil cooler also helps to improve fuel efficiency. When the engine runs at high temperatures, it puts more strain on the fuel system and causes it to work harder. This not only leads to increased fuel consumption but also puts unnecessary stress on other components of the vehicle. By keeping the engine oil at a stable temperature, the oil cooler allows for smoother and more efficient operation of the engine.

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My Buying Guide on ‘5.9 Cummins Engine Oil Cooler’

As a proud owner of a 5.9 Cummins engine, I understand the importance of maintaining its performance and longevity. One crucial component in ensuring the smooth operation of this engine is the oil cooler. With various options available in the market, choosing the right oil cooler can be overwhelming. In this buying guide, I will share my experience and knowledge to help you make an informed decision when purchasing a 5.9 Cummins engine oil cooler.

What is a 5.9 Cummins Engine Oil Cooler?

Before diving into the buying guide, let’s first understand what exactly is a 5.9 Cummins engine oil cooler. As the name suggests, it is a device that helps to cool down the engine oil and maintain its temperature within an optimal range for efficient lubrication and performance of the engine.

Why Should You Consider Upgrading Your Oil Cooler?

The stock oil cooler on the 5.9 Cummins engine may not always be sufficient in keeping the oil temperature at an ideal level, especially under heavy loads or extreme weather conditions. This can lead to decreased engine performance and even potential damage to internal components due to overheating. Upgrading your oil cooler can ensure better cooling and protection for your engine.

Factors to Consider When Buying a 5.9 Cummins Engine Oil Cooler

1. Compatibility: The most crucial factor when purchasing an oil cooler is to ensure that it is compatible with your specific model of 5.9 Cummins engine. Check for compatibility information provided by the manufacturer or consult with a trusted mechanic.

2. Material: Oil coolers are typically made from aluminum or steel alloy, both of which have their pros and cons. Aluminum coolers are lightweight and have better heat dissipation capabilities, while steel coolers are more durable but heavier.

3. Cooling Capacity: Different oil coolers have varying cooling capacities depending on their size and design. Consider the load and operating conditions of your vehicle to determine which cooling capacity would be suitable for your needs.

4. Quality: Investing in a high-quality oil cooler can save you from potential future expenses caused by premature failure or inadequate cooling capabilities.

Types of Oil Coolers for 5.9 Cummins Engine

1.Radiator-mounted Oil Cooler: This type of cooler is mounted directly onto the radiator and uses coolant fluid from the radiator to cool down the engine oil through heat exchange.

2.Remote-mounted Oil Cooler: These are separate units that can be mounted anywhere in proximity to the engine using hoses or lines to transfer hot oil from the engine to be cooled by air or coolant.

Budget Considerations

The cost of an oil cooler can vary significantly depending on its type, brand, and quality. While it may be tempting to opt for cheaper options, keep in mind that investing in a high-quality product will provide better value in terms of performance and durability in the long run.

Conclusion

Upgrading your stock 5.9 Cummins engine oil cooler can greatly benefit your vehicle’s overall performance and longevity while protecting against potential damages caused by overheating. Consider all factors mentioned above before making a purchase decision to ensure compatibility, quality, and budget considerations are met.

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Negele Hospedales
Negele Hospedales, known among his peers and followers as Hospey, is a vibrant young creative from Victoria, Canada. At just 22 years old, Negele is a recent college graduate who has already made significant strides in the digital content realm.

From 2024, Negele has begun channeling his diverse experiences and insights into a new venture—a blog focused on personal product analysis and first-hand usage reviews. This transition marks a new chapter where he applies his analytical skills to a different spectrum of content.