Mishimoto Thermostatic Oil Cooler Kit Subaru WRX STI 08+
The Subaru WRX STI provides a great balance of power, handling, and reliability. As with any vehicle, controlling fluid temperatures will ensure consistent power and engine longevity. The Mishimoto Subaru WRX STI Oil Cooler Kit is a great addition to any street or track STI. A large 19-row cooler mounts in the front bumper to provide optimal airflow and cooling efficiency. The included direct-fit mounting brackets and preassembled stainless steel lines with -10AN fittings will ensure an easy and hassle-free installation.
This cooler is proven to reduce oil temperatures by 20+°F (16+°C) degrees while maintaining minimal pressure loss. For further heat protection this kit includes thermal reflective wrap for the oil lines, providing substantial heat deflection from the nearby exhaust. The Mishimoto Subaru WRX STI Oil Cooler Kit can be customized to meet your needs with either a Stealth Black or Sleek Silver cooler and your choice of the Mishimoto Oil Sandwich Plate or the Mishimoto Thermostatic Oil Sandwich Plate. As with all our products, this kit includes the Mishimoto Lifetime Warranty.
- 20+°F (16+°C) temperature drop
- Minimal pressure loss
- Direct fit for the STI
- Stealth Black and Sleek Silver cooler options
- Thermostatic option available
- Mishimoto Lifetime Warranty
Increase in Oil Capacity
- .65 Quarts (0.615L)
Pressure Drop
- 3-4 PSI
Temperature Difference
- 20+°F (16+°C)
Purchase Includes
(3) - Application Specific Mounting Brackets
(1) - 19-Row Oil Cooler (silver or black)
(1) - 3ft, 6in Stainless Steel Braided Hose with 150-degree -10AN Fittings
(1) - 4ft Stainless Steel Braided Hose with 90-degree and 150-degree -10AN Fittings
(1) - M20 Thermostatic Sandwich Plate (Non-Thermostatic Available)
(1) - M20 Stainless Steel Sandwich Plate Adapter
(2) - M20 x -10AN Straight Fittings
(1) - 2ft of thermal reflective wrap
(1) - Mounting Hardware Set
Note: This oil cooler kit will only work with models with the 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 oil cooler kit. Recommended torque specification for all straight fittings and banjo bolts: 15-25 ft/lbs (operating range). Do not exceed the maximum torque rating of 35 ft/lbs.
For STI Installation
Refer to final picture for proper STI hose routing as this differs from the WRX.
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.co.uk.
This product is compatible with the following vehicles
| Vehicle Make | Vehicle Model | Vehicle Variant | From | To | Engine | Notes |
| Subaru | Impreza | WRX | 2009 | 2010 | EJ257 | 2.5L 330S - 4WD Petrol |
| Subaru | Impreza | WRX | 2009 | 2010 | EJ255 | 2.5L 330S - 4WD Petrol |
| Subaru | Impreza | STi | 2009 | 2010 | EJ255 | 2.5L 330S - 4WD Petrol |
| Subaru | Impreza | WRX | 2009 | 2010 | EJ255 | 2.5L S - 4WD Petrol |
| Subaru | Impreza | STi | 2009 | 2010 | EJ257 | 2.5L 330S - 4WD Petrol |
| Subaru | Impreza | WRX | 2009 | 2010 | EJ257 | 2.5L S - 4WD Petrol |
| Subaru | WRX STi | 2010 | EJ25 | 2.5L - 4WD Petrol | ||
| Subaru | WRX STi | 2011 | EJ25 | 2.5L 320R - 4WD Petrol |
Mishimoto is a premier manufacturer of performance aluminium radiators, racing thermostats, aluminium fan shrouds, universal intercoolers, silicone hose kits and cooling accessories. Mishimoto is the leader in cooling in the aftermarket performance automotive industry.
Whether you're a daily driver searching for a dependable quality upgrade from your current OEM radiator, or you're a devoted racer who needs a lightweight, high-performance racing radiator, Mishimoto has just what you're looking for. Many drivers overlook the importance of having a high-quality aluminium radiator installed, yet it is one of the most important components in your vehicle's engine.
Mishimoto Racing Thermostats will promote greater cooling efficiency throughout your engine. The Mishimoto racing thermostat will significantly lower high engine temperature produced by modified and upgraded turbo applications.
