4.0L 1GR-FE V6 engine pumps out up to 278 lb-ft of torque and a lot of heat, especially when slowly crawling up steep rock faces. Low road speeds mean low airflow through the radiator, which makes expelling all that heat difficult. But after 13 years of trails and fording muddy water, low airflow can be compounded by clogged radiator fins. Unless you’re somebody who religiously power washes your cooling stack every weekend, chances are clogged fins are hampering your engine cooling. Not to mention, it doesn’t matter how much airflow your radiator gets if there’s a tree branch through it. Luckily, Mishimoto has the solution to both situations. Our aluminum radiator is an easy solution to a leaking, damaged, or just plain beat up stock radiator. Our all-aluminum radiator boasts a 35% increase in core volume, and a 153% increase in fin surface area. So even if you don’t clean it every weekend, our radiator will still cool better than the stock radiator. Our end tanks are made from solid aluminum and precision TIG-welded to the core to withstand anything the trail can throw at it. Like all our aluminum radiators, this is covered by our Mishimoto Lifetime Warranty.