Mishimoto Performance Top Mount Intercooler Kit Subaru WRX STi 10-13
- Direct fit for the 2008–2015 Subaru WRX STI
- Provides 10°F temperature drop compared to stock intercooler
- Proven +5 whp and +7 wtq bolt-on power increase for stock vehicle
- 3.75" thick core with 584 in3 of volume produces optimal heat transfer for vehicles from stock to 400 whp
- 100% aluminium construction with durable cast end tanks TIG-welded to a highly efficient bar-and-plate core
- Easily installs in under 30 minutes
- Does not require modification to the stock A/C line and functions with the stock intercooler Y-pipe
- Includes new Y-pipe gaskets, BPV gasket, silicone PCV hose, and silicone throttle-body coupler
- Available in durable powder-coated Sleek Silver or Stealth Black finish
- Mishimoto Lifetime Warranty
Looking for a way to reduce high intake temperatures on your stock or modified STI? The solution is the Mishimoto direct-fit top-mount intercooler engineered specifically for the 2008–2015 Subaru WRX STI. Mishimoto engineers spent months designing and testing this new intercooler to ensure optimum performance on both the street and track. This intercooler utilizes durable cast aluminium end tanks TIG-welded to a highly efficient, dense bar-and-plate core. The Mishimoto intercooler has a 3.75" thick core and a total volume of 584 in3. Thanks to this volume and a very dense offset fin pitch, we are able to optimize heat transfer and support vehicles from stock up to 400 whp. This intercooler endured rigorous testing, showing a 10°F temperature drop as well as a +5 whp and +7 wtq bolt-on power increase for our stock test vehicle. Installation is simple, requires no modification to the stock A/C line, and can be completed in under 30 minutes. Included with this intercooler are new Y-pipe gaskets, a new BPV gasket, a silicone PCV hose, and a silicone throttle-body coupler. These components negate the need to gather supplies for installation, and they ensure years of reliable service. This intercooler is available in a durable powder-coated finish of Sleek Silver or Stealth Black, and it includes the Mishimoto Lifetime Warranty
Cooler Overall Size
24.5" x 11.5" x 4.25"
Cooler Core Size
21" x 7.25" x 3.75"
Cooler Construction
Bar-and-plate with cast end tanks
Tank Wall Thickness
3.5mm
Cooler Inlet / Outlet
Inlet: 2.5" x 1.313" (x2)
Outlet: 2.56" I.D. / 3.00" O.D.
Cooler Fin specs
Internal: 4.7mm fin height, 2.8mm fin pitch
External: 6.5mm fin height, 1.7mm fin pitch
Intercooler to throttle-body coupler hose specs
2.125" length
2.75" I.D.
3.00" O.D.
4mm thick
PCV hose specs
17.5" length
0.45" I.D.
0.75" O.D.
4mm thickCooler Weight
21 lb
Also Fits
08–15 Subaru WRX STI
Engine Codes
EJ257
EJ255
Chassis Codes
GR
GV
Purchase Includes
(1) Bar-and-Plate Intercooler
(1) Intercooler to Throttle-Body Transition Coupler
(1) PCV Hose
(1) Bypass Valve Gasket
(2) Y-pipe to Intercooler Gaskets
(1) Black Nylon Hose Fitting, 3/4" I.D.
(1) Black Nylon Tee Hose Fitting, 3/4" I.D.
Note
This kit is rated for 250–450 whp with maximum limits of approximately 500 whp, or 30 psi of turbo boost. Exceeding that horsepower or pressure limit may require a larger front-mount intercooler.
This product is compatible with the following vehicles
| Vehicle Make | Vehicle Model | Vehicle Variant | From | To | Engine | Notes |
| Subaru | WRX STi | 2010 | 2013 | EJ25 | 2.5L - 4WD Petrol | |
| Subaru | WRX STi | 2010 | 2012 | EJ25 | 2.5L - 4WD Petrol | |
| Subaru | WRX STi | 2011 | 2012 | EJ25 | 2.5L 320R - 4WD Petrol | |
| Subaru | WRX STi | 2014 | EJ25 | 2.5L - 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.
