Mishimoto 08+ Subaru WRX/STi X-LINE (Thicker Core) Aluminum Radiator

If you're pushing your 2008-2014 Subaru Impreza WRX or STI hard, whether it's for daily driving or track days, keeping that flat-four engine cool is crucial. The stock radiator can struggle to keep up, risking overheating and expensive engine damage. This Mishimoto X-Line Performance Aluminum Radiator is built to handle those demanding conditions, offering a significant boost in cooling capacity and durability.

This radiator features a larger, triple-row core that's 2 inches thick, with tubes that are 16% thinner than stock. This design increases surface contact and the density of the rows, which greatly improves heat dissipation. The entire unit is constructed from 100% brazed aluminum with TIG-welded end tanks, making it strong and long-lasting. It's designed as a direct OEM fit, so installation is straightforward without needing any modifications to your car.

To further help manage heat, this radiator comes with a high-pressure 1.3 bar Mishimoto radiator cap, which raises the boiling point of your coolant. It also includes a second cap for the expansion tank. Mishimoto backs this radiator with their Lifetime Warranty, including accident protection, so you can be confident it will keep your Subaru running cool.