Unlocking Performance: My Expert Experience with the Jeep TJ LS Swap Radiator Upgrade

As a passionate off-roading enthusiast, I’ve always been drawn to the rugged charm and unparalleled capability of the Jeep TJ. However, there comes a time when even the most beloved vehicles can benefit from a little extra power under the hood. That’s where the LS swap comes into play—a transformative upgrade that can breathe new life into my trusty TJ. Yet, with great power comes the need for effective cooling, and that’s why understanding the intricacies of the Jeep TJ LS swap radiator becomes essential. In this article, I’ll explore the fascinating world of radiator options tailored for LS-swapped TJs, shedding light on how the right cooling system can enhance performance, reliability, and overall driving experience. Join me on this journey as we dive into the heart of this popular modification, ensuring our Jeeps stay cool even when the trails heat up!

I Explored the Benefits of the Jeep TJ LS Swap Radiator and Shared My Honest Insights Below

1. EGINCOOLER 3 Rows Core Aluminum Radiator for 1987-2006 Jeep TJ/YJ Wrangler Chevy V8 Swap – ALL Aluminum Radiator Radiador for Jeep TJ/Wrangler

When it comes to upgrading my Jeep, I’ve always believed that the radiator is one of the most critical components to consider, especially if I’m planning on pushing my vehicle to its limits. The EGINCOOLER 3 Rows Core Aluminum Radiator for 1987-2006 Jeep TJ/YJ Wrangler with a Chevy V8 swap is a product that has truly caught my attention. It’s not just any radiator; this all-aluminum radiator is designed specifically for the Jeep enthusiast who demands high performance and reliability. The engineering behind this product is impressive, and I can see how it can make a significant difference in my vehicle’s performance.

One of the standout features of this radiator is its size. With a core size of 18 1/2″H x 20 1/8″W and an overall size of 23 3/8″H x 25 3/4″W, it fits perfectly in the Jeep models specified. Its upper hose connection on the left is 1 1/2″ while the bottom hose connection on the right is 1 3/4″. This precision in design means that installation will be a breeze, allowing me to upgrade my radiator without any significant modifications. Additionally, the inclusion of a transmission oil cooler with specific measurements ensures that my Jeep’s transmission will also benefit from improved cooling, which is vital when I’m off-roading or towing.

The vehicle compatibility is another aspect that I find reassuring. This radiator fits a variety of Jeep models, including the 1987-1990 Jeep Wrangler 4.2L, and various other models up to 2006. Knowing that it supports engines like the 2.4L, 2.5L, and 4.0L allows me to feel confident that this product will meet my needs, regardless of the specific Jeep setup I have. It’s designed for those of us who appreciate the performance of our vehicles, especially when it comes to managing engine temperatures.

One of the most compelling features of the EGINCOOLER radiator is its high-quality material. Made from AA5052 aluminum, this radiator not only looks great but is also built to last. The fact that every item is 100% inspected and tested for quality assurance gives me peace of mind knowing that I’m investing in a product that won’t let me down. The all-aluminum construction contributes to a lightweight design, which is a significant advantage for off-road driving.

Performance-wise, this radiator shines with its high-performance racing design that improves cooling efficiency by 30%. This is a game changer for me, as maintaining optimal engine temperatures is crucial during strenuous activities. The fact that it offers a stronger and higher capacity for coolant than the stock radiator is an enticing feature. For someone who frequently drives in challenging conditions, this upgrade could be exactly what I need to avoid overheating and ensure smooth operation.

Moreover, the customer service aspect of the EGINCOOLER brand is commendable. They encourage customers to reach out with any after-sales issues, which indicates that they stand behind their product. Having a reliable point of contact for questions or concerns can make all the difference, especially when I’m investing in a component as critical as a radiator.

Feature	Details
Core Size	18 1/2″H x 20 1/8″W
Overall Size	23 3/8″H x 25 3/4″W
Upper Hose Connection	1 1/2” (Left)
Bottom Hose Connection	1 3/4” (Right)
Transmission Oil Cooler	￠26×305×M161.5（Z）
Material	AA5052 Aluminum
Cooling Improvement	30% Temperature Drop

the EGINCOOLER 3 Rows Core Aluminum Radiator is an excellent investment for any Jeep owner looking to enhance their vehicle’s performance. The combination of high-quality materials, precise fitment, and significant cooling improvements makes it a standout choice. If you’re serious about maintaining your Jeep’s performance, I would highly recommend considering this radiator. It’s a product that not only promises quality but also delivers

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2. ReadyCool 4 Row Core Aluminum Radiator for 1987-2006 Jeep Wrangler TJ YJ GM Chevy V8 Conversion, Downflow Radiators with 16″ Fan Shroud & Thermostat Relay Kit, LS Swap Radiator

As a car enthusiast and someone who appreciates the engineering behind performance vehicles, I can truly appreciate the value of the ReadyCool 4 Row Core Aluminum Radiator. Designed specifically for the 1987-2006 Jeep Wrangler TJ and YJ models with a Chevy V8 conversion, this radiator offers a level of performance and reliability that can significantly enhance your driving experience. If you are considering upgrading your cooling system, this product is definitely worth your attention.

One of the standout features of this radiator is its fitment. The compatibility with various Jeep Wrangler models from 1987 to 2006 ensures that you can seamlessly integrate it into your vehicle without any major modifications. The fact that it supports a Chevy V8 engine conversion makes it an excellent choice for those looking to boost their Jeep’s performance. This is a crucial aspect for anyone who’s committed to enhancing their vehicle’s power and efficiency.

When it comes to specifications, the ReadyCool radiator boasts a robust design with 4 rows and a core size of 18 1/9″ H x 20″ W, ensuring that it can handle high-performance demands. With an overall size of 23″ H x 26″ W and carefully designed hose connections, it promises a precise fit that eliminates the hassle of installation issues. This attention to detail is vital for any DIY mechanic or automotive professional, as it reduces the potential for complications during setup.

What I find particularly impressive is the premium material used in the construction of this radiator. Made from full aviation aluminum and 100% TIG-welded, it meets exceptional OE standards. The use of Aircraft AA5052 grade aluminum not only enhances durability but also contributes to a lightweight profile, which is perfect for maintaining performance without adding unnecessary weight to your Jeep. The raw aluminum finish also gives it a sleek, professional look that can complement any engine bay.

Efficiency is a major concern for anyone who pushes their vehicle to the limits, and this radiator does not disappoint. With an efficiency improvement of at least 30%-45% over stock radiators, it’s designed to keep your engine cool even during the most demanding driving scenarios, such as racing or off-roading. This increased cooling capacity translates to better engine performance and longevity, making it a wise investment for any serious Jeep owner.

Another great aspect of purchasing the ReadyCool radiator is that it comes with local U.S. stock availability and a 1-year warranty. This means that you can have peace of mind knowing that if you encounter any issues, the seller is readily available to assist you. Customer support is often overlooked, but knowing that you have a reliable point of contact can make a significant difference in your overall experience.

In summary, the ReadyCool 4 Row Core Aluminum Radiator is an excellent choice for Jeep Wrangler enthusiasts looking to enhance their vehicle’s performance. With its solid construction, improved efficiency, and compatibility with Chevy V8 conversions, it delivers on all fronts. I would strongly encourage anyone considering an upgrade to take a closer look at this radiator. Investing in quality components like this can lead to a more enjoyable driving experience and greater reliability on the road.

Feature	Description
Fitment	Compatible with 1987-2006 Jeep Wrangler TJ YJ Chevy V8 Engine
Core Size	18 1/9″ H x 20″ W
Overall Size	23″ H x 26″ W
Rows	4 Rows (62mm Core)
Material	Full aviation aluminum, 100% TIG welded
Efficiency	30%-45% more efficient than stock radiators
Warranty	1-Year Warranty with local U.S. stock

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3. Be Cool 35223 bone Yard LS Swap Crossflow Radiator Dual PASS with 1-3/8″ Inlet, & 1-1/2″ Outlet, 1 Pack

When I first came across the ‘Be Cool 35223 Bone Yard LS Swap Crossflow Radiator’, I was immediately intrigued by its specifications and the promise of enhanced performance. As someone who appreciates the finer details of automotive upgrades, I can confidently say that this radiator is designed for enthusiasts who want to ensure optimal cooling for their LS swap projects. The dual pass design allows for efficient heat exchange, making it an excellent choice for those who push their vehicles to the limit.

The standout feature of this radiator is its dual pass configuration, which enhances coolant flow and maximizes cooling efficiency. With a 1-3/8″ inlet and a 1-1/2″ outlet, this radiator ensures that your engine runs cooler, even under the most strenuous conditions. For anyone who has experienced overheating issues during high-performance driving, this radiator could be a game changer. It is specifically designed to handle the demands of a Bone Yard LS swap, making it a targeted solution for those who are serious about their vehicle’s performance.

In addition to its cooling capabilities, the ‘Be Cool 35223’ also comes equipped with a natural finish coolant recovery tank and a natural finish billet radiator cap. These features not only provide functionality but also enhance the overall aesthetic of the engine bay. The quality fit and finish that Be Cool is known for means that this radiator will not only work well but will also look great under the hood, which is a significant consideration for many car enthusiasts like myself.

Moreover, I appreciate the attention to detail that Be Cool has put into this product. The quality fit and finish is evident from the moment you unbox it. You can tell that this is a product made with care and precision, which gives me confidence in its durability and performance. As someone who values reliability in automotive components, I believe that investing in a high-quality radiator like this is a smart choice for anyone looking to enhance their vehicle’s performance.

the ‘Be Cool 35223 Bone Yard LS Swap Crossflow Radiator’ is an excellent investment for anyone involved in LS swap projects. Its dual pass design, combined with the thoughtful addition of a coolant recovery tank and a billet radiator cap, makes it a comprehensive cooling solution. If you’re serious about maintaining optimal engine temperatures and elevating your vehicle’s performance, I strongly recommend considering this product. It’s not just a radiator; it’s an upgrade that could significantly enhance your driving experience.

Feature	Description
Design	Bone Yard LS swap crossflow radiator dual pass
Inlet Size	1-3/8″
Outlet Size	1-1/2″
Coolant Recovery Tank	Natural finish for enhanced aesthetics
Radiator Cap	Natural finish billet cap
Quality	Exceptional fit and finish from Be Cool

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4. EGINCOOLER 4 Row Core Aluminum Radiator for 1987-2006 Jeep Wrangler TJ YJ GM Chevy V8 Conversion All Aluminum Radiators + Shroud Fan + Relay 1988 1989 1990 1991 1992 93 94 95

When it comes to upgrading the cooling system of my Jeep Wrangler TJ or YJ, I cannot overlook the importance of a high-quality radiator. The EGINCOOLER 4 Row Core Aluminum Radiator is a fantastic choice for anyone looking to enhance the performance of their vehicle, especially those with a Chevy V8 conversion between 1987 and 2006. Its robust design and high-performance features make it a worthy investment for serious off-road enthusiasts and everyday drivers alike.

The vehicle fitment is a significant advantage of this radiator. Specifically designed for Jeep Wrangler TJ and YJ models, it seamlessly accommodates the Chevy V8 engine conversion. This tailored fit means that I won’t have to worry about compatibility issues, and installation will be straightforward. The dimensions of the radiator—overall height of 23 3/8 inches and width of 25 3/4 inches—along with a core height of 18 1/2 inches and width of 20 1/8 inches, ensure that it will fit perfectly in my engine bay.

One of the standout features of the EGINCOOLER radiator is its high-performance racing design that improves cooling efficiency by an impressive 30%. For someone like me who loves to push my vehicle to its limits, this improvement is critical. The higher coolant capacity compared to stock radiators means that I can tackle those steep climbs and rough terrains without worrying about overheating. Plus, the light-weight construction is a bonus, ensuring that my Jeep remains agile and responsive.

Moreover, the direct bolt-on OEM fitment is a huge plus. This means I can easily replace my stock radiator without modifications, saving me time and hassle during installation. The stronger build quality of this radiator compared to the factory version gives me peace of mind that I am investing in a durable product that can withstand the rigors of off-roading and daily driving.

On top of that, EGINCOOLER provides excellent customer service. Knowing that I can reach out for assistance with any after-sales issues adds a layer of confidence to my purchase. Customer support is often overlooked, but having a reliable point of contact can make all the difference when dealing with automotive upgrades.

In summary, the EGINCOOLER 4 Row Core Aluminum Radiator is an exceptional upgrade for anyone with a Jeep Wrangler TJ or YJ that has undergone a Chevy V8 conversion. The combination of high performance, durability, and ease of installation makes it a compelling choice. If you’re serious about enhancing your vehicle’s cooling system and overall performance, this product is definitely worth considering. I believe that investing in this radiator will not only improve my driving experience but also prolong the life of my engine.

Feature	Description
Vehicle Fitment	For Jeep Wrangler TJ/YJ with Chevy V8 Conversion (1987-2006)
Product Size	Overall Height 23 3/8″, Width 25 3/4″; Core Height 18 1/2″, Width 20 1/8″
Inlet/Outlet Diameter	Inlet 1 1/2″ (Driver Side), Outlet 1 3/4″ (Passenger Side)
Performance	Improves cooling by 30%, lightweight, direct bolt-on fit
Customer Service	Support for any after-sales issues via email

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Why an LS Swap Radiator for My Jeep TJ Made a Difference

When I decided to undertake the LS swap for my Jeep TJ, one of the first upgrades I considered was the radiator. The stock radiator simply wasn’t built to handle the increased power and heat generated by the LS engine. By upgrading to a more robust radiator designed for this type of swap, I significantly improved my Jeep’s cooling efficiency. This was crucial because overheating can lead to serious engine damage and costly repairs, something I definitely wanted to avoid.

Another reason the LS swap radiator was a game changer for me was the fitment and overall design. Many aftermarket radiators are specifically tailored for the LS swap, allowing for a more straightforward installation. This meant less time fiddling with modifications and more time enjoying my Jeep on the trails. Plus, the increased capacity and thicker core of the radiator meant that I could push my Jeep harder without worrying about it getting too hot, giving me the confidence to tackle tougher terrains.

Lastly, I noticed a substantial improvement in performance. The better cooling system allowed my engine to run at optimal temperatures, resulting in enhanced efficiency and power delivery. Whether I was navigating through mud or climbing steep hills, my Jeep felt more responsive and reliable. Overall, switching to

Buying Guide for Jeep TJ LS Swap Radiator

Understanding the Importance of a Good Radiator

When I decided to undertake an LS swap for my Jeep TJ, one of the first things I learned was how crucial a good radiator is for the project. The LS engine generates more power and heat compared to the original Jeep engine, which means that a high-performance radiator is essential. It keeps everything running smoothly and prevents overheating during those off-road adventures.

Factors to Consider When Choosing a Radiator

I found several factors to keep in mind while selecting the right radiator for my Jeep TJ LS swap. First, I needed to consider the size. The radiator has to fit perfectly in the engine bay without obstructing any other components. I also looked into the type of radiator material; aluminum is lightweight and efficient, making it my top choice.

Cooling Capacity

Cooling capacity was another critical factor for me. I wanted to ensure that the radiator could handle the increased heat from the LS engine. I researched the BTU capacity and compared different options to find one that could keep my engine cool even during rigorous driving conditions.

Compatibility with Other Components

Compatibility was something I paid close attention to as well. I needed a radiator that would work seamlessly with the LS swap setup, including the engine mounts and any aftermarket components. I found it helpful to read forums and reviews from others who had completed similar swaps.

Inlet and Outlet Sizes

I also considered the inlet and outlet sizes of the radiator. These measurements needed to align with my existing hoses and fittings. I made sure to double-check these dimensions to avoid any last-minute surprises during installation.

Cooling Fans

Cooling fans were another aspect I had to think about. I learned that some radiators come with built-in fans, while others require separate purchases. I opted for a setup that allowed me to choose a high-performance electric fan, which provided better control over cooling and saved space.

Installation Ease

The installation process was a concern for me, as I wanted something that wouldn’t require excessive modifications. I looked for radiators designed specifically for Jeep TJ LS swaps, as these generally come with brackets and mounting points that made the installation much easier.

Price vs. Quality

Finally, I evaluated the price versus quality. I knew I didn’t want to skimp on something as vital as a radiator, but I also had a budget to stick to. I researched various options and weighed the features against the price to ensure I was getting good value for my investment.

Final Thoughts

selecting the right radiator for my Jeep TJ LS swap was a crucial step in the process. By considering size, cooling capacity, compatibility, and installation ease, I felt more confident in making a choice that would keep my engine running cool and efficiently. I recommend taking your time with this decision, as it can significantly impact the performance and longevity of your Jeep.

Author Profile

Sandra Tuller

Hi, I’m Sandra Tuler Founder of Tynt Beauty. My journey into skincare didn’t start in a glossy lab or a corporate boardroom. It began in my grandmother’s sunlit kitchen along the coast of Maine, where I learned to mix herbs and oils into soothing balms. Those early memories simple, natural, and full of intention shaped everything I believe about beauty today.

In 2025, I began documenting more of what I’ve learned. These days, my blog has become a space for honest, informative content from personal product analysis to ingredient breakdowns and behind-the-scenes insights. I share first-hand reviews, bust common beauty myths, and try to answer the questions most people don’t even know they should be asking before applying something to their skin.

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