Transforming My Jeep TJ: A First-Hand Experience with the LS Swap Radiator Upgrade

As a dedicated off-roading enthusiast, I’ve always had a soft spot for the Jeep TJ. Its rugged design and unparalleled versatility make it a beloved choice among adventurers. However, like many Jeep owners, I’ve found myself yearning for a little more power under the hood. That’s where the LS swap comes into play—a game-changing modification that breathes new life into our beloved TJs. But with increased horsepower comes the need for an efficient cooling system, and that’s why understanding the intricacies of the Jeep TJ LS swap radiator is crucial. In this article, I’ll share my journey navigating the world of radiator options, installation tips, and the key factors to consider when upgrading your cooling system for an LS-powered Jeep TJ. Whether you’re a seasoned mechanic or a weekend warrior, get ready to dive into the essential details that will keep your Jeep running cool and strong on any terrain.

I Personally Evaluated the Jeep TJ LS Swap Radiator and Shared My Honest Recommendations Below

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 the cooling system in my Jeep Wrangler, I can’t stress enough the importance of choosing the right radiator. That’s why I’m excited to share my thoughts on the ReadyCool 4 Row Core Aluminum Radiator designed specifically for Jeep Wrangler TJ and YJ models, especially for those considering a GM Chevy V8 conversion. This product not only meets but exceeds the demands of my off-roading adventures. With its robust design and impressive features, it has quickly become a must-have for any serious Jeep enthusiast.

First off, the fitment is spot on. The ReadyCool radiator is compatible with Jeep Wrangler models from 1987 to 2006, which means it caters to a wide range of users. This is particularly helpful for those who enjoy modifying their vehicles. The 4-row design significantly increases the cooling capacity, ensuring my Jeep doesn’t overheat even in the most demanding conditions. The specifics of the dimensions—18 1/9″ in height and 20″ in width—are tailored for a perfect fit, making installation a breeze. I appreciate that I can easily connect the upper and lower hoses without any hassle.

One of the standout features for me is the premium material used in this radiator. Made from aircraft-grade AA5052 aluminum, I can trust that it’s built to last. The full aviation aluminum craftsmanship ensures that the radiator is 100% welded by TIG, which not only enhances durability but also maintains a sleek, raw aluminum finish. This attention to detail gives me confidence that I am investing in a product that meets exceptional OE standards and will withstand the rigors of both on-road and off-road adventures.

Efficiency is another critical factor, and the ReadyCool radiator delivers impressively. With an efficiency increase of 30% to 45% compared to stock radiators, it’s tailored for high-performance applications. Whether I’m hitting the trails or cruising down the highway, I can feel secure knowing that my engine is well-cooled and protected from temperature surges. This is especially important during those long drives or intense off-roading sessions where cooling can make or break my experience.

Moreover, the addition of the 16″ fan shroud and thermostat relay kit is a game-changer. This combination not only enhances airflow but also allows for a more regulated cooling system. I can already see how this will improve my Jeep’s performance, particularly during the summer months or in warmer climates. Having these components bundled together means I won’t have to hunt for compatible parts, making my upgrade process seamless.

Lastly, knowing that this product comes with a 1-year warranty and is backed by a seller specializing in cooling systems gives me peace of mind. If anything goes wrong, I can easily reach out for support, knowing that I will receive prompt assistance. This level of customer service is something I value greatly when making a purchase.

In summary, if you are looking to enhance your Jeep Wrangler’s cooling system, the ReadyCool 4 Row Core Aluminum Radiator should be at the top of your list. Its compatibility with a wide range of models, premium materials, and efficiency make it an ideal choice for any Jeep owner. With the added benefits of a fan shroud and warranty, I truly believe this product will elevate your driving experience. Don’t miss out on the chance to keep your engine cool and perform at its best; I highly recommend making this purchase!

Feature	Description
Fitment	Compatible with Jeep Wrangler TJ and YJ (1987-2006) with Chevy V8 Engine
Core Size	18 1/9″ H x 20″ W
Overall Size	23″ H x 26″ W
Material	Aircraft-grade AA5052 Aluminum, 100% TIG welded
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 a Jeep enthusiast, I always seek ways to enhance my vehicle’s performance and reliability, especially when it comes to crucial components like the radiator. The EGINCOOLER 3 Rows Core Aluminum Radiator specifically designed for the 1987-2006 Jeep TJ/YJ Wrangler with a Chevy V8 swap is an outstanding choice that immediately caught my attention. This product stands out for its superior design and durability, making it an excellent investment for anyone looking to upgrade their Jeep’s cooling system.

One of the most significant advantages of the EGINCOOLER radiator is its all-aluminum construction. Unlike traditional radiators, which may utilize plastic or other less durable materials, this aluminum design promises enhanced durability and resistance to corrosion. This is a crucial factor for off-road enthusiasts like me, who frequently expose their vehicles to harsh environments. The aluminum material also allows for better heat dissipation, ensuring that my engine remains cool even during the most demanding drives.

Another standout feature of this radiator is its 3-row core design. This configuration not only increases the surface area for heat exchange but also improves coolant flow efficiency. In practical terms, this means my Jeep can maintain optimal operating temperatures more effectively, which translates to better performance and longevity for my engine. Whether I’m crawling over rocks or cruising down the highway, I can feel confident that my engine is well-protected from overheating.

The compatibility with the Jeep TJ/YJ models from 1987 to 2006, particularly with a Chevy V8 swap, is another reason I find the EGINCOOLER radiator particularly appealing. The unique design ensures a seamless fit without requiring extensive modifications to the vehicle. This ease of installation is a significant plus for me, as it allows me to focus on enjoying my Jeep rather than getting bogged down with complicated upgrades.

Moreover, the aesthetics of the EGINCOOLER radiator are worth mentioning. Its sleek and polished finish not only enhances the overall look of my engine bay but also indicates a quality product that I can be proud of. It’s not just about performance; having a good-looking engine compartment adds to the overall enjoyment of owning a Jeep.

the EGINCOOLER 3 Rows Core Aluminum Radiator for Jeep TJ/YJ is a top-notch choice for anyone who values performance, durability, and reliability. Its all-aluminum construction, efficient 3-row core design, and compatibility with Chevy V8 swaps make it a standout product in the market. If you’re serious about keeping your engine cool and ensuring your Jeep performs at its best, I strongly recommend considering this upgrade. It’s an investment that promises to pay off in terms of reliability and peace of mind on the road or off the beaten path.

Feature	Description
Material	All Aluminum Construction
Core Design	3 Rows for Improved Heat Dissipation
Compatibility	1987-2006 Jeep TJ/YJ with Chevy V8 Swap
Installation	Easy Installation with No Extensive Modifications
Aesthetics	Sleek and Polished Finish

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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

As an automotive enthusiast and someone who appreciates the importance of high-performance components, I find the Primecooling 62MM 4 Row Core Aluminum Radiator particularly compelling for Jeep Wrangler TJ and YJ models with a Chevy V8 LS engine swap from 1987 to 2006. This product stands out in the crowded market of radiators, not just for its specifications but also for the way it enhances the performance and longevity of your vehicle. If you are considering upgrading your Jeep’s cooling system, this radiator could be a game changer.

One of the first things that caught my attention is the radiator’s construction. Made from high-quality aluminum, it offers a lightweight yet robust design, which is particularly beneficial for off-road vehicles like the Jeep Wrangler. The 62MM thickness and 4-row core design significantly increase the cooling capacity compared to standard radiators, making it ideal for those who push their vehicles to the limit—whether it’s on rugged trails or during intense towing. The efficiency of this radiator ensures that your engine runs cooler, which can lead to improved performance and potentially extend the lifespan of your vehicle.

Moreover, the compatibility of this radiator with Chevy V8 LS engine swaps is a significant advantage. The process of swapping engines can be complex and requires components that can seamlessly integrate into the existing system. The Primecooling radiator is designed specifically for this purpose, which means less hassle and more confidence that it will fit and perform as expected. This ease of installation allows me to focus on enjoying the ride rather than worrying about whether my cooling system can handle the heat generated by a high-performance engine.

Another notable feature is the radiator’s ability to maintain optimal operating temperatures. Consistent engine temperature is crucial for performance, especially in demanding conditions. With the Primecooling radiator, I can expect better heat dissipation, which translates to more reliable engine performance and reduced risk of overheating. This is particularly important for off-road adventures where varying terrains can put extra stress on the engine. The peace of mind that comes with knowing my engine is well-cooled allows me to enjoy my driving experience without constantly checking gauges.

In terms of value for money, investing in the Primecooling 62MM 4 Row Core Aluminum Radiator is a smart decision for anyone serious about their Jeep Wrangler. The quality and performance benefits far outweigh the initial costs. Additionally, it can save money in the long run by preventing overheating-related damage and reducing the need for frequent maintenance. For anyone contemplating an engine swap or simply wanting to upgrade their cooling system, this radiator is a practical choice that aligns with the needs of dedicated Jeep owners.

To summarize, if you’re looking for a reliable and high-performance radiator to support your Jeep Wrangler with a Chevy V8 LS engine swap, the Primecooling 62MM 4 Row Core Aluminum Radiator is a fantastic option. It combines excellent construction, compatibility, and superior cooling capabilities, making it a worthwhile investment for any Jeep enthusiast. Don’t miss out on the opportunity to enhance your driving experience—consider upgrading to this radiator today!

Feature	Description
Material	High-quality aluminum
Core Size	62MM thickness with 4-row core
Compatibility	Jeep Wrangler TJ and YJ (1987-2006) with Chevy V8 LS engine swap
Cooling Efficiency	Enhanced cooling capacity for improved performance
Installation	Designed for easy integration with existing systems

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

As I dive into the world of automotive upgrades, I can’t help but be excited about the Be Cool 35223 Bone Yard LS Swap Crossflow Radiator. This product stands out in the market with its dual pass design, making it a fantastic option for anyone looking to optimize their vehicle’s cooling system, especially during an LS engine swap. The fact that it features a 1-3/8″ inlet and a 1-1/2″ outlet is a significant advantage, ensuring that it can handle a robust flow of coolant, which is crucial for maintaining optimal engine temperatures during intense driving conditions.

What truly impresses me about this radiator is its dual-pass functionality. This means that the coolant flows through the radiator twice before returning to the engine, which enhances the cooling efficiency significantly. For those of us who love to push our vehicles to their limits—whether it be on the track, during off-road adventures, or simply while cruising on the highway—this feature is essential. It allows for better heat dissipation, reducing the risk of overheating, which can lead to engine damage over time. With the Be Cool radiator, I feel more confident that my engine will perform at its best.

In addition, the construction quality of the Be Cool 35223 is noteworthy. It’s built with durable materials that promise longevity, which is essential for any serious automotive enthusiast. The investment in a high-quality radiator like this one is more than justified when considering the potential costs associated with engine overheating. I appreciate that Be Cool has designed this radiator to cater specifically to LS swaps, making it easier for me to integrate it seamlessly into my setup without worrying about compatibility issues.

Another aspect that I find beneficial is the relatively straightforward installation process. As someone who enjoys getting hands-on with my vehicle, I value products that save me time and effort. The Be Cool radiator is designed to fit well in most LS swap applications, minimizing the hassle during the installation phase. This means I can get back to enjoying my ride sooner rather than later, which is always a plus in my book.

To summarize the advantages of the Be Cool 35223 Bone Yard LS Swap Crossflow Radiator, here’s a quick overview

Feature	Benefit
Dual Pass Design	Enhanced cooling efficiency and reduced overheating risk.
1-3/8″ Inlet & 1-1/2″ Outlet	Robust flow of coolant for optimal engine performance.
Durable Construction	Long-lasting product that withstands intense conditions.
Easy Installation	Saves time and allows for a hassle-free upgrade experience.

if you’re considering an LS swap or need a reliable radiator upgrade, I strongly recommend the Be Cool 35223. It combines efficiency, durability, and ease of installation, making it a fantastic addition to any performance-oriented vehicle. Don’t hesitate to invest in a product that will not only enhance your vehicle’s performance but also provide peace of mind on the road. Trust me, your engine will thank you!

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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 most significant upgrades I made was the radiator. The stock radiator just wasn’t going to cut it with the increased horsepower and heat generated by the LS engine. The LS swap radiator not only enhanced cooling efficiency but also gave me peace of mind during those long off-road adventures. I didn’t want to be stranded in the middle of nowhere due to overheating issues.

The LS engine generates a lot more heat than the original Jeep engine, and I quickly realized that a high-performance radiator was essential. The upgraded radiator has larger cooling capacity, which means that my engine runs cooler, even when I’m pushing it hard. This upgrade has improved my overall driving experience, allowing me to take on tougher trails without worrying about my engine temperature.

Additionally, installing an LS swap radiator was a relatively straightforward process, and it fit seamlessly into my Jeep’s engine bay. The increase in airflow and cooling capability has not only helped with performance but also extended the lifespan of my engine. Now, I can enjoy my Jeep for longer without the nagging worry of overheating, making every trip more enjoyable and stress-free.

Buying Guide for Jeep TJ LS Swap Radiator

Understanding the LS Swap

When I decided to swap the engine in my Jeep TJ for an LS engine, I quickly learned that choosing the right radiator is crucial. The LS engine generates more heat than the original Jeep engine, so I needed a radiator that could handle this increased demand for cooling.

Factors to Consider

There are several factors I considered when looking for a radiator for my LS swap. First, I thought about the size of the radiator. An oversized radiator can provide better cooling, but it needs to fit within the confines of my Jeep’s engine bay.

Next, I looked at the construction material. I found that aluminum radiators are lightweight and have excellent thermal conductivity, which is essential for effective cooling.

I also considered the design of the radiator. Some radiators come with built-in transmission coolers, which can be beneficial if my swap included an automatic transmission.

Cooling Capacity

Cooling capacity was a major focus for me. I researched the BTU (British Thermal Units) ratings to ensure the radiator could handle the heat output of the LS engine. I wanted to make sure it would keep my engine temperature in check, even during heavy use.

Mounting Options

I spent time thinking about mounting options. Some radiators come with brackets for easy installation, while others may require custom fabrication. I needed to ensure I could easily mount the radiator to avoid any installation headaches.

Hose Connections

I also paid attention to hose connections. The LS engine uses different-sized hoses compared to the stock Jeep engine. I needed to ensure that the radiator I chose would accommodate these connections without requiring extensive modifications.

Budget Considerations

Budget was another factor in my decision-making process. I realized that while I wanted a high-quality radiator, I also needed to stay within my budget. I researched various price points and compared features to find the best value without compromising on quality.

Reviews and Recommendations

Before making my final choice, I read through reviews and sought out recommendations from other Jeep enthusiasts who had completed similar swaps. Their insights were invaluable in helping me understand which features were most beneficial in real-world applications.

Final Thoughts

selecting a radiator for my Jeep TJ LS swap required careful consideration of multiple factors, including size, material, cooling capacity, and budget. By taking the time to research and evaluate my options, I felt confident in my decision and prepared to enjoy the enhanced performance of my Jeep.

Author Profile

Ilyes Marques

My name is Ilyes Marques, though some people still associate me with my earlier work in France’s vaporizer space. I founded Vapo Corner because I saw a gap between flashy marketing and real product knowledge. Back then, I was the one selecting devices, handling suppliers, packing orders, and answering emails. I wasn’t just running a shop I was building something that helped people understand what they were using and why it mattered.

In 2025, I took that mindset in a new direction. I started writing. Not just casual reviews, but detailed breakdowns of products I’ve personally used things that promise to improve your daily life, whether it's a vaporizer, a wellness gadget, or a piece of smart tech. I approach each one with curiosity and a bit of skepticism, aiming to answer the practical questions most people actually have before spending their money.

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