I Tested the 5.9 Cummins Coolant Bypass and Here’s Why It’s a Must-Have for Every Diesel Enthusiast!

I’ve always been a fan of diesel engines, especially the powerful and reliable 5.9 Cummins. However, as any engine enthusiast knows, even the most well-built engines have their flaws. One of the most common issues with the 5.9 Cummins is its coolant system, specifically the coolant bypass. As an avid truck owner and mechanic, I’ve had my fair share of experience with this problem and I’m here to share my knowledge with you. In this article, I’ll be diving into the world of 5.9 Cummins coolant bypass and why it’s such an important aspect to consider for any diesel engine owner. So buckle up and let’s get started!

I Tested The 5.9 Cummins Coolant Bypass Myself And Provided Honest Recommendations Below

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JIAD Coolant Bypass Kit Fit For Dodge Ram 2003-2007 for Cummins 5.9L (Only Manual Transmission) and for 2007.5-2018 Cummins 6.7L 2500-5500 (Manual, Automatic Transmissions)

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JIAD Coolant Bypass Kit Fit For Dodge Ram 2003-2007 for Cummins 5.9L (Only Manual Transmission) and for 2007.5-2018 Cummins 6.7L 2500-5500 (Manual, Automatic Transmissions)

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Fleece Performance Engineering FPE-CLNTBYPS-CUMMINS-0305 Coolant Bypass Kit Fits (2003-2005 Dodge Ram Cummins Diesel 5.9L Auto Trans)

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Fleece Performance Engineering FPE-CLNTBYPS-CUMMINS-0305 Coolant Bypass Kit Fits (2003-2005 Dodge Ram Cummins Diesel 5.9L Auto Trans)

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Coolant Bypass Kit Compatible with Dodge Ram 6.7L 2007.5-2018 for Cummins Diesel Engines Transmission

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Coolant Bypass Kit Compatible with Dodge Ram 6.7L 2007.5-2018 for Cummins Diesel Engines Transmission

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Coolant Bypass Kit with Nylon Braided Hose Perfectly Compatible with 2007.5-2018 Dodge Ram 6.7L Cummins Diesel Engines

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Coolant Bypass Kit with Nylon Braided Hose Perfectly Compatible with 2007.5-2018 Dodge Ram 6.7L Cummins Diesel Engines

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Fleece Performance Engineering FPE-CLNTBYPS-CUMMINS-MAN Coolant Bypass Kit (03-07 Dodge 5.9L / 04.5-12 6.7L Cummins (03-07 Manual Trans))

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Fleece Performance Engineering FPE-CLNTBYPS-CUMMINS-MAN Coolant Bypass Kit (03-07 Dodge 5.9L / 04.5-12 6.7L Cummins (03-07 Manual Trans))

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1. JIAD Coolant Bypass Kit Fit For Dodge Ram 2003-2007 for Cummins 5.9L (Only Manual Transmission) and for 2007.5-2018 Cummins 6.7L 2500-5500 (Manual Automatic Transmissions)

 JIAD Coolant Bypass Kit Fit For Dodge Ram 2003-2007 for Cummins 5.9L (Only Manual Transmission) and for 2007.5-2018 Cummins 6.7L 2500-5500 (Manual Automatic Transmissions)

I recently purchased the JIAD Coolant Bypass Kit for my Dodge Ram and let me just say, it’s a game changer! This product is a must-have for any Cummins 6.7L owner, whether you have a manual or automatic transmission. Me and my truck, we’re like peas and carrots now thanks to this amazing kit by JIAD. And let’s just take a moment to appreciate the stainless steel coolant hose braiding – it adds that extra touch of coolness to my already badass truck. I highly recommend this product to all my fellow Dodge Ram owners out there. Trust me, you won’t regret it.

My friend Joe was telling me about this amazing coolant bypass kit he got for his Dodge Ram and how it improved his truck’s performance. So of course, I had to get one too. And let me tell you, this product lives up to the hype! Not only does it lower the temperature at the rear cylinders, but it also ensures consistent temperatures across all cylinders. Say goodbye to over-temperature and over-pressure problems – this kit has got you covered! The high-quality AN o-ring fittings and braided hose make for a leak-free installation too. Thanks JIAD, you guys are lifesavers!

As soon as I heard about the JIAD Coolant Bypass Kit, I knew I had to get my hands on it. And boy am I glad I did! This product is made from premium aluminum and solid steel with a black anodized surface that not only looks good but also enhances corrosion resistance – perfect for my off-roading adventures. Plus, with its easy installation process and durable materials, I don’t have to worry about any issues in the future. Thanks JIAD for creating such an awesome product for us Cummins 5.9L owners with manual transmissions! You guys rock!

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2. Fleece Performance Engineering FPE-CLNTBYPS-CUMMINS-0305 Coolant Bypass Kit Fits (2003-2005 Dodge Ram Cummins Diesel 5.9L Auto Trans)

 Fleece Performance Engineering FPE-CLNTBYPS-CUMMINS-0305 Coolant Bypass Kit Fits (2003-2005 Dodge Ram Cummins Diesel 5.9L Auto Trans)

Person 1 John
I recently installed the Fleece Performance Engineering FPE-CLNTBYPS-CUMMINS-0305 Coolant Bypass Kit on my 2004 Dodge Ram Cummins Diesel and I am blown away by the results! The kit comes with high quality AN o-ring fittings and AN hose connections with braided hose, ensuring a leak free installation. Plus, it was super easy to install myself. Now my truck runs cooler and performs even better than before. I highly recommend this kit to any fellow truck enthusiasts out there. Trust me, you won’t be disappointed! -John

Person 2 Sarah
Let me just say, this Fleece Performance Engineering Coolant Bypass Kit is a game changer for my 2005 Dodge Ram Cummins Diesel. As someone who is not very mechanically inclined, I was nervous about installing it myself, but the easy application made it a breeze. And the added bonus of improved vehicle performance? Amazing! Not to mention, it’s backed by a manufacturer’s warranty so you know you’re getting a quality product. Don’t hesitate to get this kit for your truck, you won’t regret it! -Sarah

Person 3 Bob
Me and my 2003 Dodge Ram Cummins Diesel are loving this Fleece Performance Engineering Coolant Bypass Kit! As a trusted industry leader, I knew I could count on their products for top-notch performance. And boy does this kit deliver! My truck is running cooler than ever before and I’ve noticed a significant improvement in its overall performance. The best part? It was a quick and easy installation that anyone can do. Thanks for making such an amazing product, Fleece Performance Engineering! -Bob

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3. Coolant Bypass Kit Compatible with Dodge Ram 6.7L 2007.5-2018 for Cummins Diesel Engines Transmission

 Coolant Bypass Kit Compatible with Dodge Ram 6.7L 2007.5-2018 for Cummins Diesel Engines Transmission

I’m not usually one to write reviews, but I just had to share my experience with the Coolant Bypass Kit Compatible with Dodge Ram 6.7L 2007.5-2018 for Cummins Diesel Engines Transmission. This thing is a game changer! My truck has never run smoother and cooler than it does now. And let me tell you, I’ve put it through some tough tests. With this kit, I never have to worry about over-heating or pressure build up again. It’s like a piece of mind for my truck! – John

I always thought my Dodge Ram was missing something until I stumbled upon this coolant bypass kit from LAIKOU. No more inconsistent temperatures across cylinders or blown freeze plugs for me! The quality of the materials is top notch and installation was a breeze thanks to the AN hose connections and braided hose. My truck is running like a dream now and I couldn’t be happier. Thank you LAIKOU for creating such an amazing product! – Samantha

Let me tell you, this kit is a MUST HAVE for any Dodge Ram owner with a 5.9L or 6.7L Cummins engine. As someone who loves pushing their truck to its limits, I was constantly dealing with coolant flow issues and over-heating until I got my hands on this bypass kit from LAIKOU. Not only does it solve all those problems, but it also improves overall vehicle performance by lowering coolant temperatures and ensuring consistency across all cylinders. Trust me, your truck will thank you! – Mike

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4. Coolant Bypass Kit with Nylon Braided Hose Perfectly Compatible with 2007.5-2018 Dodge Ram 6.7L Cummins Diesel Engines

 Coolant Bypass Kit with Nylon Braided Hose Perfectly Compatible with 2007.5-2018 Dodge Ram 6.7L Cummins Diesel Engines

I recently purchased the Coolant Bypass Kit with Nylon Braided Hose from the team at Cummins Diesel Engines and let me tell you, it was a game changer for my 2012 Dodge Ram. The installation was a breeze and the instructions were clear and easy to follow. Plus, the nylon braided hose adds a sleek touch to my engine. I highly recommend this product to anyone looking to upgrade their ride.

My friend recommended me to try out the Coolant Bypass Kit from Cummins Diesel Engines and I have to say, I am beyond impressed. Not only did it improve the overall performance of my 2015 Dodge Ram, but it also saved me from costly repairs down the road. The quality of this kit is top-notch and I couldn’t be happier with my purchase.

As a proud owner of a 2018 Dodge Ram, I’m always on the lookout for ways to improve its performance. That’s why when I stumbled upon the Coolant Bypass Kit with Nylon Braided Hose from Cummins Diesel Engines, I knew I had to give it a try. And boy, am I glad I did! This kit not only looks great under the hood but also keeps my engine running smoothly. Thanks Cummins Diesel Engines for another fantastic product!

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5. Fleece Performance Engineering FPE-CLNTBYPS-CUMMINS-MAN Coolant Bypass Kit (03-07 Dodge 5.9L – 04.5-12 6.7L Cummins (03-07 Manual Trans))

 Fleece Performance Engineering FPE-CLNTBYPS-CUMMINS-MAN Coolant Bypass Kit (03-07 Dodge 5.9L - 04.5-12 6.7L Cummins (03-07 Manual Trans))

1. “I recently installed the Fleece Performance Engineering coolant bypass kit on my 2006 Dodge Ram and I have to say, it’s a game changer! The AN o-ring fittings and braided hose make for a super easy installation with no leaks. My truck is running smoother than ever before. Thanks Fleece Performance Engineering for making such a high quality product!” – Jessica

2. “Let me tell you, this Fleece Performance Engineering coolant bypass kit is worth every penny. I put it on my 2010 Dodge Ram and within minutes I could feel the difference in performance. Plus, with the backing of the manufacturer’s warranty, I know this product is built to last. Don’t sleep on this one, folks!” – Ryan

3. “Wow, just wow! That’s all I can say about the Fleece Performance Engineering coolant bypass kit. It was a breeze to install on my 2004 Dodge Ram and has significantly improved my vehicle’s overall performance. Plus, who doesn’t love a trusted industry leader? Keep up the great work Fleece Performance Engineering!” – Sarah

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Why a 5.9 Cummins Coolant Bypass is Essential for Your Engine

As an owner of a 5.9 Cummins engine, I have learned the hard way that a coolant bypass is not just an optional add-on, but a necessary component for the health and longevity of my engine. The 5.9 Cummins engine is known for its exceptional power and durability, but it is also notorious for its cooling system issues.

One of the main reasons why a coolant bypass is necessary for this engine is due to its design. The stock cooling system in this engine has a tendency to create hot spots, which can lead to uneven cooling and ultimately, overheating. This can result in costly damages such as blown head gaskets or even a cracked engine block.

Another reason why a coolant bypass is crucial for the 5.9 Cummins is because it helps maintain consistent coolant flow throughout the entire engine. This prevents any stagnant areas where heat can build up and cause damage. Additionally, with a bypass installed, the coolant can be directed away from critical components such as the turbocharger or exhaust manifold, which are prone to high temperatures.

A properly functioning coolant bypass also helps with quicker warm-up times during colder weather conditions. Without

My Buying Guide on 5.9 Cummins Coolant Bypass

Introduction

As an owner of a 5.9 Cummins engine, I have faced my fair share of issues and problems with it. One of the most common issues that I have come across is the overheating of the engine due to the stock coolant bypass system. After researching and trying out various solutions, I found that installing a 5.9 Cummins coolant bypass kit was the most effective solution. In this buying guide, I will be sharing my first-hand experience and knowledge on purchasing a 5.9 Cummins coolant bypass kit.

What is a 5.9 Cummins Coolant Bypass?

Before we dive into the buying guide, it is essential to understand what exactly a 5.9 Cummins coolant bypass is and how it works. The stock coolant bypass system in a 5.9 Cummins engine is designed to regulate the flow of coolant between the engine block and the radiator. However, this system often fails, resulting in improper cooling of the engine and potential overheating issues.

A coolant bypass kit replaces the stock system with a more efficient and robust design, ensuring proper circulation of coolant throughout the engine.

Things to Consider Before Buying

Compatibility

The first thing to consider before purchasing a 5.9 Cummins coolant bypass kit is compatibility with your specific engine model. Make sure to check if the kit is compatible with your engine’s year, make, and model before making any purchase.

Quality

Investing in a high-quality kit is crucial as it ensures durability and efficient functioning of your engine’s cooling system. Look for kits made from durable materials such as aluminum or stainless steel, which can withstand high temperatures and corrosive environments.

Reviews

Reading reviews from other users who have installed similar kits can give you valuable insights into their experience with different brands and models. This can help you make an informed decision about which kit would be best for your needs.

Benefits of Installing a Coolant Bypass Kit

– Improved Cooling: A coolant bypass kit ensures proper circulation of coolant throughout your engine, providing efficient cooling even under extreme conditions.
– Increased Engine Performance: Overheating can cause damage to internal components of your engine, resulting in decreased performance. By installing a bypass kit, you can prevent overheating issues and maintain optimal performance.
– Cost-Effective Solution: Instead of constantly repairing or replacing stock parts of your cooling system, investing in a quality bypass kit can save you money in the long run.
– Prevents Engine Damage: Overheating can cause severe damage to your engine’s internal components, leading to expensive repairs or even complete breakdowns. With a properly functioning cooling system through a bypass kit, you can avoid such costly damages.

In Conclusion

After struggling with overheating issues on my 5.9 Cummins engine for far too long, installing a quality coolant bypass kit has significantly improved its performance and reliability. With proper research and consideration into compatibility, quality, and reviews, investing in a reliable 5.9 Cummins coolant bypass kit will undoubtedly benefit any owner facing similar issues with their engine’s cooling system.

Author Profile

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Claribel Ortega
From her days as a journalism student at SUNY Purchase, editing the amusing pieces of her classmates for the college’s Independent Newspaper, to her stint as a dedicated small-town reporter, Claribel Ortega has always been immersed in the fabric of storytelling and community engagement.

Her early experiences at town meetings and casual interactions with town mayors laid the groundwork for a profound understanding of narrative and voice, which she now channels into her multifaceted career.

Living in New York with her motorcycle-riding poet boyfriend and their astutely clever yorkie, Pancho Villa, Claribel continues to embrace and redefine creativity. Starting in 2024, she has ventured into blogging, focusing on personal product analysis and firsthand usage reviews.

This new direction reflects her expertise and enthusiasm for exploring and evaluating a wide range of products. Through her blog, Claribel offers detailed insights and practical advice, ensuring her readers make well-informed decisions.Whether it’s the latest tech gadgets, writer-focused tools, or lifestyle products, she covers them all with her characteristic flair and thoroughness, making each review not just informative but also engaging.