Description
The Mishimoto Oil Cooler Kit (MMOC-STI-15) is a Silver Cooler, Non-Thermostatic configuration engineered around a 19-row bar-and-plate performance core, built specifically to manage oil temperatures on the Subaru WRX STI. Preassembled stainless steel braided lines with -10AN male AN Flare fittings and application-specific mounting brackets take the guesswork out of installation, while the kit is proven to knock oil temperatures down by 20+ degrees Fahrenheit (16+ degrees Celsius) with only minimal pressure loss.
As a dedicated Mishimoto oil cooler, this kit mounts the large silver, anodized-finish cooler in the front bumper for optimal airflow, giving street and track-driven STI owners consistent oil temperature control for longer engine life. The Mishimoto cooler retains use of your stock liquid-to-liquid oil cooler unit, and the included thermal reflective wrap shields the oil lines from radiant heat off the nearby exhaust. Buyers looking for a Mishimoto oil cooler kit with flexible finish and function will appreciate that this cooler is available in Sleek Silver or Stealth Black, with a choice between the standard Mishimoto Oil Sandwich Plate or the Mishimoto Thermostatic Oil Sandwich Plate.
Vehicle Applications
This Mishimoto oil cooler kit is a direct fit for the Subaru WRX STI Base and STI Limited trims from 2015 through 2018, the 2015 WRX STI Launch Edition, and the 2016 WRX STI Series.HyperBlue. It is built around the EJ257 engine code and VA chassis code. Important: this oil cooler kit is only compatible with STI models equipped with a single scroll turbo and un-equal length exhaust manifold — models with a twin scroll turbo and equal length exhaust manifold may not be compatible with this kit.
Features
- 19-row bar-and-plate performance core mounted in the front bumper for optimal airflow and cooling efficiency
- Reduces oil temperatures by 20+ degrees Fahrenheit (16+ degrees Celsius) with minimal pressure loss
- Silver, anodized cooler finish; Stealth Black or Sleek Silver cooler options available
- Preassembled stainless steel braided hoses with -10AN male AN Flare fittings
- Application-specific mounting brackets for a direct-fit installation
- Retains the use of your stock liquid-to-liquid oil cooler unit
- Thermal reflective wrap included for the oil lines to deflect heat from the nearby exhaust
- Choice of Mishimoto Oil Sandwich Plate or Mishimoto Thermostatic Oil Sandwich Plate
- Kit includes application-specific mounting brackets, 19-row oil cooler, 3.5-ft stainless steel braided hose with 150° -10AN fittings, 4-ft stainless steel braided hose with 90° and 150° -10AN fittings, M20 sandwich plate, M20 stainless steel sandwich plate adapter, M20 x -10AN straight fittings, and mounting hardware set
- Backed by the Mishimoto Lifetime Warranty
Specifications
- Part Number: MMOC-STI-15
- Option: Silver Cooler, Non-Thermostatic
- Core Type: Bar-and-Plate
- Grade Type: Performance
- Core Row Quantity: 19-row
- Core Height: 5.43 in
- Core Thickness: 1.97 in
- Core Width: 11 in
- Color / Core Color: Silver
- Finish: Anodized
- Inlet Fitting Type: AN Flare (Male)
- Outlet Fitting Type: AN Flare (Male)
- Engine Code: EJ257
- Chassis Code: VA
- Recommended torque for straight fittings and banjo bolts: 15-25 ft-lb (do not exceed 35 ft-lb maximum)
Frequently Asked Questions
Which Subaru WRX STI models fit this Mishimoto oil cooler kit?
This kit (MMOC-STI-15) is a direct fit for the Subaru WRX STI Base and STI Limited from 2015-2018, the 2015 WRX STI Launch Edition, and the 2016 WRX STI Series.HyperBlue. It is built around the EJ257 engine code and VA chassis code.
How much does this Mishimoto oil cooler kit reduce oil temperatures?
The kit is proven to reduce oil temperatures by 20+ degrees Fahrenheit (16+ degrees Celsius) while maintaining minimal pressure loss.
Is this oil cooler kit compatible with all STI turbo configurations?
No. This oil cooler kit only works with models featuring a single scroll turbo and un-equal length exhaust manifold. Models with a twin scroll turbo and equal length exhaust manifold may not be compatible.
What is included with the Mishimoto Oil Cooler Kit?
The kit includes application-specific mounting brackets, a 19-row oil cooler, a 3.5-ft stainless steel braided hose with 150° -10AN fittings, a 4-ft stainless steel braided hose with 90° and 150° -10AN fittings, an M20 sandwich plate, an M20 stainless steel sandwich plate adapter, M20 x -10AN straight fittings, a mounting hardware set, and the Mishimoto Lifetime Warranty.
What color and sandwich plate options are available?
The cooler is available in Sleek Silver or Stealth Black, and you can choose either the standard Mishimoto Oil Sandwich Plate or the Mishimoto Thermostatic Oil Sandwich Plate.
Does this kit retain my stock oil cooler?
Yes, this oil cooler kit retains the use of your stock liquid-to-liquid oil cooler unit.
âš WARNING (California Proposition 65): This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
