A must have to finish off an engine build is the Mishimoto Aluminum radiator. The increased cooling efficiency is not the only benefit, this aluminum piece adds the perfect amount of shine to your engine bay. Don’t risk it with a higher-mileage OEM radiator when your car is making much more power than what it came with from the factory. Go with a Mishimoto radiator! This unit is a direct drop-in and will work with OEM fans. Part #: MMRAD-WRX-01 warranty : Manufacture Limited Lifetime Includes Radiator Cap: Yes Fits OEM Fans: Yes The Mishimoto performance aluminum radiator for the Subaru WRX and STI is designed and engineered to maximize cooling efficiency by up to 30%, boost engine functions, and most importantly protect your car from overheating. It is the ideal upgrade to the stock radiator whether you drive your vehicle daily or take it for track runs. The Mishimoto aluminum radiator features a lightweight dual core, 100% brazed aluminum, and polished end tanks, enhancing the overall performance of your engine. Every Mishimoto aluminum radiator is a direct OEM fit making installation effortless with no cutting or modification required. All Mishimoto radiators come with a high pressure 1.3 bar Mishimoto radiator cap and a great warranty including accident protection.