Mishimoto 02-05 Subaru WRX/STi Thermostatic Oil Cooler Kit

If you're pushing your 2002-2005 Subaru WRX or STI, keeping oil temperatures in check is crucial for both performance and the life of your engine. This Mishimoto oil cooler kit is designed to do just that, giving your flat-four engine a boost in reliability. What you get in this kit is everything you need for a direct installation: application-specific mounting brackets, pre-made stainless steel braided oil lines, a billet oil sandwich plate, and the efficient 10-row stacked-plate Mishimoto oil cooler itself, along with all the necessary hardware to put it all together.

This well-built kit adds about half a quart of oil capacity, which helps significantly. In testing, it's shown to reduce oil temperatures by over 20 degrees Fahrenheit while only causing a minimal drop in oil pressure, which is important for consistent lubrication. You can choose between a standard oil sandwich plate or one with a rear-mounted thermostat. The thermostatic option is great because it helps the engine reach optimal operating temperature faster and then regulates it, making it perform well in any environment. You can also pick between a sleek silver or a stealth black finish for the cooler itself to match your build.

This kit is a perfect addition if you're looking to build out the ultimate cooling system for your Subaru. It pairs well with Mishimoto's aluminum radiator, fan shroud kit, and silicone radiator hoses. Mishimoto stands behind this kit with their Lifetime Warranty, so you know it's built to last.