Transforming My Jeep TJ with an LS Swap Radiator: A Personal Journey and Expert Insights

When I first set out to enhance my Jeep TJ, I knew I wanted to push the limits of performance and reliability. One of the most exciting modifications on this journey has been the LS swap—a game-changer that not only boosts power but also transforms the driving experience. However, I quickly discovered that with great power comes the need for great cooling solutions. That’s where the Jeep TJ LS swap radiator comes into play. In this article, I’ll share my insights on choosing the right radiator to ensure optimal performance and keep my engine running cool, even on the toughest trails. Whether you’re a seasoned off-roader or a newcomer to the Jeep community, understanding the importance of a robust cooling system is essential for unleashing the full potential of your LS-swapped TJ. Join me as we dive into the world of radiators and explore how this crucial component can make or break your Jeep’s performance.

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1. 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

When it comes to upgrading my Jeep Wrangler, I always look for parts that not only enhance performance but also ensure reliability. The ReadyCool 4 Row Core Aluminum Radiator is a prime example of such a product. Specifically designed for 1987-2006 Jeep Wrangler TJ and YJ models with a GM Chevy V8 conversion, this radiator is a game-changer for anyone looking to optimize their vehicle’s cooling system. I appreciate how this radiator is tailored to fit seamlessly into my Jeep, making the installation process straightforward and hassle-free.

One of the standout features of this radiator is its 4-row design. With a core size of 62mm, it significantly increases the surface area for cooling compared to the stock radiators. The dimensions of 18 1/9″ H x 20″ W for the core and an overall size of 23″ H x 26″ W provide ample space for efficient heat dissipation. This is particularly important for those of us who take our Jeeps off-road or use them for heavy-duty tasks, as it ensures that the engine remains at optimal temperatures even under strenuous conditions.

What I find particularly appealing is the premium material used in its construction. The full aviation aluminum craftsmanship combined with 100% TIG welding guarantees that the radiator not only looks great but is also built to last. The use of Aircraft AA5052 grade aluminum enhances its durability, which is crucial for off-road adventures where rough terrains can pose risks to standard parts. The raw aluminum finish also adds a sleek aesthetic to the engine bay, which I personally find pleasing.

Additionally, the efficiency of this aluminum radiator is impressive. It boasts a cooling efficiency that is at least 30%-45% better than stock radiators. This means that my Jeep can handle temperature surges more effectively, which is essential during intense driving conditions, whether it’s climbing steep hills or navigating through mud. Knowing that I have a reliable cooling system alleviates concerns about overheating during my off-road escapades.

Moreover, I appreciate the fact that this product comes with a 1-year warranty and is available from US local stock. This gives me peace of mind knowing that if I encounter any issues, customer support is just a message away. The commitment to customer satisfaction and the willingness to assist with any problems further reinforces my trust in the brand.

if you are a Jeep enthusiast looking to enhance your vehicle’s performance, the ReadyCool 4 Row Core Aluminum Radiator is an excellent investment. Its robust build quality, superior cooling efficiency, and compatibility with various Jeep models make it a must-have for anyone considering a V8 swap. I highly recommend taking the leap and upgrading your radiator; it’s a decision that you won’t regret.

Feature	Details
Fitment	Compatible with Jeep Wrangler TJ YJ Chevy V8 Engine 1987-2006
Core Rows	4 Rows (62mm Core)
Core Size	18 1/9″ H x 20″ W
Overall Size	23″ H x 26″ W
Upper Hose Connection	1 1/2″ (left)
Bottom Hose Connection	1 3/4″ (right)
Material	Full aviation aluminum, 100% TIG welded, Aircraft AA5052 grade
Cooling Efficiency	30%-45% more efficient than stock radiators
Warranty	1-Year Warranty

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

As an avid off-roader and someone who truly appreciates the intricacies of automotive upgrades, I have to say that the EGINCOOLER 3 Rows Core Aluminum Radiator is an exceptional choice for anyone looking to enhance their Jeep TJ or YJ Wrangler, especially for those planning a Chevy V8 swap. This product is thoughtfully designed, keeping the needs of Jeep enthusiasts in mind, and it’s clear that a lot of attention has been paid to both performance and quality.

The specifications of this radiator are impressive. 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 seamlessly into the Jeep’s engine bay without any hassle. The upper and bottom hose connections are well-positioned, measuring 1 1/2” and 1 3/4” respectively, making installation straightforward. Furthermore, the added transmission oil cooler enhances its functionality, ensuring that your engine runs optimally even under demanding conditions.

What stands out to me is the compatibility of this radiator with a range of Jeep models from 1987 to 2006, including various engine sizes like the 2.4L, 2.5L, 4.0L, and 4.2L. This versatility means that whether you have an older model or one of the later iterations, you can still enjoy the benefits of this high-performance radiator. It’s comforting to know that I can upgrade my cooling system without worrying about compatibility issues.

Constructed entirely from AA5052 aluminum, the radiator promises durability and reliability. I appreciate that each unit is 100% inspected and tested for quality assurance, which gives me confidence in its long-lasting performance. In the world of off-roading, where conditions can be unpredictable, having a radiator that can withstand the elements is crucial. The high-performance racing design not only improves cooling efficiency by 30% but also contributes to a lighter overall weight compared to stock radiators. This combination of features means that I can push my Jeep to its limits without the fear of overheating.

Moreover, the direct bolt-on OEM fitment or replacement aspect makes installation a breeze. I don’t want to spend hours in the garage trying to make parts fit; I want something that works right out of the box. This radiator fits the bill perfectly. It’s a straightforward swap that can be done with minimal tools, allowing me to get back on the trail quicker.

Lastly, the customer service aspect cannot be overlooked. Knowing that I can reach out for assistance if any after-sales issues arise is reassuring. It shows that the company stands behind its product and is willing to ensure customer satisfaction. This level of support is something I always look for when making a purchase.

In summary, the EGINCOOLER 3 Rows Core Aluminum Radiator is an outstanding upgrade for anyone with a Jeep TJ or YJ Wrangler. With its high-quality materials, impressive performance enhancements, and user-friendly installation, it’s a decision that will undoubtedly benefit any Jeep enthusiast. If you’re looking to keep your engine cool and perform at its best, I highly recommend considering this radiator. It might just be the upgrade your vehicle needs to take on tougher trails and adventures.

Feature	Description
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”
Bottom Hose Connection	1 3/4”
Transmission Oil Cooler	￠26×305×M161.5（Z）
Compatible Models	1987-2006 Jeep Wrangler (various engine types)
Material	All Aluminum (AA5052)
Performance Improvement	30% better cooling
Fitment	Direct Bolt-On OEM Fitment or Replacement

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3. Primecooling 62MM 4 Row Core Aluminum Radiator for Jeep Wrangler TJ YJ w/Chevy V8 LS Engine SWAP 1987-2006

I am excited to share my analysis of the Primecooling 62MM 4 Row Core Aluminum Radiator, specifically designed for Jeep Wrangler TJ and YJ models equipped with a Chevy V8 LS engine swap from 1987 to 2006. As an enthusiast who values performance and reliability, I find this product to be a remarkable choice for anyone looking to enhance their vehicle’s cooling system. The combination of innovative features and high-quality construction makes it a standout option for Jeep owners who demand the best.

One of the most impressive aspects of this radiator is its leading-edge welding craftsmanship. The fact that it is 100% welded by TIG not only speaks to its durability but also ensures that there are no weak points that could potentially lead to leaks. This level of craftsmanship provides peace of mind, especially for those of us who take our vehicles off-road or push them to their limits. Additionally, the CE approval guarantees that it meets rigorous safety and quality standards, further enhancing its credibility.

The high-performance racing design of the Primecooling radiator is another noteworthy feature. It improves cooling efficiency by an impressive 35-45% compared to stock radiators. This is crucial for anyone who has swapped in a Chevy V8 LS engine, as increased power output often leads to higher operating temperatures. With this radiator, I can ensure that my engine stays cool even under the most demanding conditions, thus prolonging its lifespan and maintaining optimal performance.

Constructed from full T-6061 aluminum, this radiator is not only lightweight but also designed for direct bolt-on OEM fitment or replacement. This means that installation is straightforward and hassle-free. I appreciate products that don’t complicate the modification process, allowing me to focus on enjoying my vehicle. Plus, the stronger and higher capacity for coolant compared to the stock radiator means that it can handle more heat, making it ideal for both daily driving and off-road adventures.

Another significant advantage is the built-in transmission oil cooler. For those of us who frequently tow or engage in heavy-duty driving, this feature is invaluable. It helps maintain optimal transmission temperatures, reducing wear and tear and improving overall vehicle performance. I cannot stress enough how important it is to have a well-cooled transmission, especially when dealing with the additional strain from a V8 engine.

Additionally, the local delivery service that promises 3-5 days for delivery is a huge plus. I know how frustrating it can be to wait for essential parts, especially when you’re eager to get back on the road or trail. With a lifetime warranty on every item and responsive after-sales support, I feel confident that my investment is protected. If any issues arise, the ability to reach out for assistance is reassuring.

the Primecooling 62MM 4 Row Core Aluminum Radiator is an exceptional upgrade for Jeep Wrangler TJ and YJ owners with a Chevy V8 LS engine swap. With its superior cooling capabilities, robust construction, and thoughtful design features, it stands out as an essential component for enhancing vehicle performance. I genuinely believe that investing in this radiator will not only improve my Jeep’s reliability but also enhance my overall driving experience. If you’re considering an upgrade, I encourage you to take the plunge. You won’t regret it!

Feature	Description
Welding Craftsmanship	100% TIG welded for durability
Cooling Performance	Improves cooling by 35-45%
Material	Full T-6061 Aluminum Construction
Fitment	Direct bolt-on OEM fitment or replacement
Coolant Capacity	Stronger & higher capacity than stock radiator
Trans Oil Cooler	Built-in for improved transmission cooling
Delivery	Local delivery within 3-5 days
Warranty	Lifetime warranty on every item

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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

As a proud owner of a Jeep Wrangler, I understand the importance of having reliable and high-performance parts to ensure my vehicle runs smoothly, especially under demanding conditions. That’s why I am thoroughly impressed with the EGINCOOLER 4 Row Core Aluminum Radiator designed specifically for 1987-2006 Jeep Wrangler TJ and YJ models with Chevy V8 conversions. This radiator is not just an upgrade; it’s a game-changer for Jeep enthusiasts like me who value performance and efficiency.

One of the standout features of the EGINCOOLER radiator is its vehicle fitment compatibility. It’s tailored for the Jeep Wrangler TJ/YJ models that have undergone a Chevy V8 conversion. This compatibility ensures a direct bolt-on installation, making it a hassle-free upgrade for anyone looking to enhance their vehicle’s cooling system. The dimensions of the radiator are also thoughtfully designed an overall height of 23 3/8 inches and width of 25 3/4 inches, with a core height of 18 1/2 inches and width of 20 1/8 inches. These specifications mean that the radiator will fit perfectly in the designated space without any modifications, which is a significant advantage for DIY enthusiasts.

In terms of performance, this radiator excels with a high-performance racing design that improves cooling efficiency by up to 30%. If you’ve ever driven your Jeep in extreme conditions or while towing heavy loads, you know how critical it is to maintain optimal engine temperatures. The EGINCOOLER radiator offers a stronger and higher capacity for coolant compared to stock radiators, ensuring that my engine stays cool even when the heat is on. This feature alone could save me from potential overheating issues during off-road adventures or long drives, which is something every Jeep owner can appreciate.

Moreover, the product comes with a shroud fan and relay, which further enhances its cooling capabilities. This thoughtful addition means that I don’t have to worry about purchasing these components separately, saving me both time and money. The lightweight design also means that the overall weight of my Jeep remains manageable, which is critical for maintaining performance both on and off the road.

Another aspect that I find reassuring is the commitment to customer service. The manufacturer offers good after-sales support, encouraging users to reach out in case of any issues. This level of support is vital for me as a consumer; it adds a layer of trust and reliability to the product. Knowing that I can rely on the manufacturer if I run into any complications gives me confidence in my purchase.

if you’re looking for a high-performance radiator that is specifically designed for your Jeep Wrangler with Chevy V8 conversion, the EGINCOOLER 4 Row Core Aluminum Radiator should definitely be on your radar. Its excellent fitment, impressive cooling efficiency, and customer support make it a worthwhile investment that can enhance your vehicle’s performance significantly. I personally believe that making this upgrade will not only improve my Jeep’s reliability but also enhance my overall driving experience. If you’re serious about off-roading or simply want to ensure your Jeep runs at its best, I highly recommend considering this radiator.

Feature	Description
Vehicle Fitment	Compatible with 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 OEM Fitment
Customer Service	Support for any after-sales issues via email

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Why an LS Swap Radiator is a Game Changer for My Jeep TJ

When I decided to undertake the LS swap for my Jeep TJ, I knew that upgrading the radiator was a crucial step in ensuring the longevity and performance of my new engine. The factory radiator simply wasn’t designed to handle the increased power and heat generated by the LS engine. By opting for a specialized LS swap radiator, I could provide my Jeep with the cooling capacity it desperately needed, which has made all the difference during my off-road adventures and daily drives.

One of the biggest advantages I’ve noticed is the improved cooling efficiency. The LS engine runs hotter than the original Jeep engine, and without an adequate radiator, I risked overheating, which could lead to catastrophic engine failure. With the new radiator, I have peace of mind knowing that my engine stays at an optimal temperature, even during the most challenging conditions. This upgrade not only enhances my driving experience but also extends the life of my engine.

Additionally, the LS swap radiator is designed to fit seamlessly into the Jeep TJ’s engine bay, which means I didn’t have to compromise on aesthetics or functionality. The installation process was straightforward, and I was able to retain the stock mounting points, making it a clean and professional

Buying Guide: Jeep TJ LS Swap Radiator

Understanding the Need for an LS Swap Radiator

When I decided to undertake the LS swap for my Jeep TJ, I quickly learned that choosing the right radiator was crucial. The stock radiator simply wouldn’t cut it with the added horsepower and heat generated by the LS engine. A proper radiator helps maintain optimal engine temperatures and ensures reliability on and off the road.

Considerations for Size and Fitment

One of the first things I had to consider was the size and fitment of the radiator. I measured the available space in my engine bay to ensure the new radiator would fit without any modifications. I also looked at the inlet and outlet sizes to make sure they matched my LS engine’s cooling system. Getting these dimensions right is essential for a seamless installation.

Material and Construction Quality

I noticed that the materials used in the radiator construction significantly impact its performance and durability. I found that aluminum radiators are generally lighter and more efficient at heat dissipation compared to copper or brass options. I also focused on features like welded seams and thick cores for added strength and longevity.

Cooling Capacity and Performance

Cooling capacity was another key factor in my decision. I wanted a radiator that could handle the increased heat generated by the LS engine, especially during off-road adventures. I researched radiators with high cooling capacity ratings to ensure they could maintain optimal temperatures, even in challenging conditions.

Compatibility with Other Components

When I was selecting my radiator, I had to ensure it was compatible with other components in my Jeep, such as the fans and hoses. I researched fan options that would work well with the radiator to create an efficient cooling system. Ensuring compatibility helped me avoid any last-minute surprises during installation.

Ease of Installation

I wanted a radiator that would make my installation process smoother. I looked for options that came with necessary mounting hardware and clear instructions. I also considered whether I needed any additional modifications to my Jeep’s mounting brackets or hoses, as this could affect the overall time and effort involved in the swap.

Budget Considerations

Setting a budget was important for my LS swap project. I found that radiators come in a wide price range, and while I wanted to avoid the cheapest options, I also didn’t want to overspend. I compared prices and features to ensure I was getting the best value for my investment without compromising quality.

Reviews and Recommendations

Before making my final decision, I read through various online reviews and sought recommendations from fellow Jeep enthusiasts. Hearing about others’ experiences helped me gauge the reliability and performance of different radiators. I found community forums to be particularly useful in providing insights and tips.

Final Thoughts

Choosing the right radiator for my Jeep TJ LS swap was a vital step in the process. I took the time to consider all factors, from size and material to compatibility and budget. My research and careful selection ultimately paid off, ensuring my Jeep runs cool and performs at its best. I hope this guide helps you in making an informed decision for your own LS swap project!

Author Profile

Snyder Barron

Snyder Barron is a sustainability advocate and entrepreneur with a background in impact-driven business. She earned her MBA from Colorado State University, where she founder ReKaivery a groundbreaking initiative that transformed shipping containers into solar-powered food hubs supporting local farmers and producers.

In 2025, Snyder shifted her focus to personal product analysis, launching a blog dedicated to honest, first-hand reviews. Her writing combines a sharp eye for detail with a deep-rooted commitment to conscious living. Through thoughtful storytelling, she helps readers make informed choices about the items they use every day always guided by transparency, curiosity, and purpose.

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