Whether you have a rally-inspired WRX or a built STI, maintaining ideal oil temperatures is necessary for both optimal performance and engine longevity. Treat your flat-four to a dose of reliability with the Mishimoto Subaru WRX/STI Direct-Fit Oil Cooler Kit. This kit includes precision engineered application-specific mounting brackets, premade stainless steel braided oil lines, a billet oil sandwich plate, an efficient 10-row stacked-plate Mishimoto oil cooler, and all necessary hardware. This kit provides .5 qt of additional oil capacity and reduces temperatures by more than 20°F (16°C) while providing minimal pressure loss. This kit is available with the Mishimoto standard Oil Sandwich Plate or the Mishimoto Oil Sandwich Plate with Rear-Mounted Thermostat for additional oil temperature control and optimal performance in any environment. For additional customization this kit is available with your choice of either a Sleek Silver or Stealth Black cooler. This kit is the perfect complement to the Mishimoto Subaru WRX/STI Performance Aluminum Radiator, Performance Aluminum Fan Shroud Kit, and Silicone Radiator Hose Kit for the ultimate cooling solution for your Subaru. As with all our products, this kit includes the Mishimoto Lifetime Warranty, ensuring superior product quality and craftsmanship.
- Direct fit for the 2001–2005 Subaru WRX and STI
- Application-specific mounting brackets
- Premade braided stainless steel oil lines with durable –AN fittings
- Billet aluminum oil sandwich plate in standard or thermostatic form
- 10-row stacked-plate oil cooler for optimal fluid temperature reduction
- Easily installs in two hours or less
- Reduces oil temperatures by 20+°F (16+°C)
- Compatible with all Mishimoto Subaru products
- Increases oil capacity by .5 qt
- Mishimoto Lifetime Warranty
Increase in Oil Capacity
.50 Quarts (0.473L)
(2) – Application Specific Mounting Brackets
(1) – 10-Row Oil Cooler
(1) – 3' Stainless Steel Braided Hose w/ -10AN Fittings
(1) – 4'4" Stainless Steel Braided Hose w/ -10AN Fittings
(1) – Oil Sandwich Plate (Thermostatic Option Available)
(1) – Stainless Steel Sandwich Plate Adapter, M20
(2) – Banjo Fitting w/ Bolt M20 x -10AN, Black
(1) – Black Rubber Seal
(1) – Mounting Hardware Set
Installation Torque Specs
15-25 ft/lbs (operating range) for all straight fittings and banjo bolts. Do not exceed the maximum torque rating of 35 ft/lbs.
2001-2005 Subaru WRX
2004-2005 Subaru STI
Requires trimming of exhaust heat shield for proper installation. Will not fit on vehicles equipped with front mount intercoolers. Fits automatic and manual applications.
It is the installer's responsibility to check all thermostat plugs, NPT plugs, line fittings, and other connections to assure they are fully tightened before operating the vehicle. Mishimoto recommends that you check all connections at regular intervals, especially during the first few miles after installation.