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Mishimoto Oil Cooler Kit – 2006-2007 WRX/STI


Mishimoto Oil Cooler Kit – 2006-2007 WRX/STI


  • Direct fit for the 2006-2007 Subaru WRX/STI
  • Proven 50 F (34 C) temperature drop in oil temperature
  • Full bolt-on oil cooling solution for street and track vehicles
  • No modification necessary for installation, functions with all stock equipment
  • 19-row oil cooler strategically mounted in the grille for maximum airflow
  • CNC-machined application-specific sandwich plate
  • Works in conjunction with stock liquid-to-liquid heat exchanger for proper fluid warm-up and regulation
  • Includes preassembled stainless steel braided oil lines with -10AN fittings
  • Cooler available in Sleek Silver or Stealth Black
  • Increases oil capacity by 0.65 qt
  • This oil cooler kit retains the use of your stock liquid to liquid oil cooler unit
  • Mishimoto Lifetime Warranty


Authorized Dealer


Keep your Hawkeye cool on the street or track with the all-new Mishimoto direct-fit oil cooler kit. A high horsepower Subaru needs a reliable and efficient means of reducing and maintaining proper oil temperatures. High engine temperatures can result in rapid oil degradation and potential engine damage.
The Mishimoto oil cooler kit features a large 19-row oil cooler mounted behind the front bumper and grill for optimum airflow and cooling efficiency. This oil cooler kit adds .65 qt to the total oil capacity and substantially reduces temperatures with minimal pressure loss. The Mishimoto direct-fit oil cooler kit is available with a thermostatic sandwich plate for additional oil temperature control, and your choice of a stealth black or silver cooler.
As with all our products, this kit includes the Mishimoto Lifetime Warranty


  • Application Specific Mounting Brackets
  • 19-Row Oil Cooler
  • 2ft 2in Stainless Steel Braided Hose w/ -10AN Fittings
  • 2ft 8in Stainless Steel Braided Hose w/ -10AN Fittings
  • Oil Sandwich Plate
  • Stainless Steel Sandwich Plate Adapter, M20
  • Banjo Fitting w/ Bolt M20 x -10AN, Black
  • 2′ Thermashield Silver Braided Line Protector
  • Black Rubber Protector Square
  • Mounting Hardware Set
  • Mishimoto Lifetime Warranty


Will not fit on vehicles equipped with front mount intercoolers.
Fits automatic and manual applications.
Please inspect oil filter housing for installation compatibility. Fitment confirmed with Subaru part 21311AA051


Additional Information

Weight 11.2 lbs
Dimensions 18.6 × 15 × 8.4 in
Cooler Color & Thermostatic Options

Silver, Non Thermostatic, Black, Non Thermostatic, Silver, Thermostatic, Black Thermostatic


  • 2006-2007 WRX/STI


Installation Guide

Install Guide


Installation Notes

Torque Specs

Recommended torque specification for all straight fittings and banjo bolts: 15-25 lb-ftDo not exceed the maximum torque rating of 35 ft-lb

Please Note

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.

Mishimoto fully inspects and cleans all products prior to packaging. However, it is recommended that customers flush the oil cooler with one quart of clean oil prior to installation to remove any debris accumulated during shipping.