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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
INCREASE IN OIL CAPACITY .50 Quarts (0.473L)
TEMPERATURE DIFFERENCE 20+°F (16+°C)
PRESSURE DROP 1-2 psi
PURCHASE INCLUDES (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.
ALSO FITS 2001-2005 Subaru WRX 2004-2005 Subaru STI
ENGINE CODES EJ205 EJ255
CHASSIS CODES GD
NOTE Requires trimming of exhaust heat shield for proper installation. Will not fit on vehicles equipped with front mount intercoolers. Fits automatic and manual applications. This oil cooler kit retains the use of your stock liquid to liquid oil cooler unit
CAUTION 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. For additional technical information, contact sales@mishimoto.com.
Need Install? We do installs right here at RallITEK HQ and also have hundereds of dealers all over the country. Click here to learn more.
What's In The Box
Installation Instructions
Applications
Subaru Impreza WRX Base - 2002
Subaru Impreza WRX Base - 2003
Subaru Impreza WRX Base - 2004
Subaru Impreza WRX Base - 2005
Subaru Impreza WRX STI Base - 2004
Subaru Impreza WRX STI Base - 2005