Mishimoto Front Mount Intercooler kit Silver Subaru WRX STI 08-14 EJ257 MMINT-STI-08SL

Designed for applications that demand the greatest airflow and cooling capabilities, the Mishimoto STI Front-Mount Intercooler Kit will provide your Subaru with the ability to make the most horsepower and torque possible. The Mishimoto front-mount intercooler was designed with a large 28" intercooler core that provides the maximum cooling capability without excessive pressure drops that will wear out any turbocharger over time. The Mishimoto STI intercooler features smooth cast end tanks that are CFD tested for maximum airflow with no sharp walls or bends from cut-and-weld end tanks that disrupt airflow. The intercooler provides the best airflow and heat-exchange properties for those time-attack laps, or a 10-second blast down the quarter mile.

The Mishimoto Subaru STI Front-Mount Intercooler also features four mandrel-bent aluminum pipes for optimum airflow. The hot-side pipes are 2.25" in diameter to keep airflow velocities high, giving your car an instant response without excessive throttle lag that plagues many front-mount intercooler designs. The cold side of the system features 3" mandrel-bent aluminum tubing for maximum airflow, and to match the diameter of your throttle body. The kit is compatible with both stock and aftermarket bypass or blow-off valves.

The kit contains everything needed for a worry-free installation, including an application-specific crash bar that both supports the intercooler and mounts to existing points on the vehicle. No cutting or drilling is required to install the crash bar and intercooler. The kit includes all necessary mounting brackets, including a relocation bracket for the coolant overflow bottle. All mounting brackets come with applicable hardware, zip ties, and thermal wrap. The kit also includes every coupler and clamp you need for a clean install. For larger-than-stock turbos, Mishimoto has included a larger turbo hot-side pipe that will fit turbochargers with an outlet of 2"–2.13". Mishimoto tested this intercooler on our 320 whp STI to find significant drops in AITs (air intake temperatures), and the intercooler has also been flow tested to over 600 whp! This kit is available with a Stealth Silver cooler and includes the Mishimoto Lifetime Warranty, ensuring superior product quality and craftsmanship.

• Fits the 2008–2014 STI
• Intercooler design optimized for maximum flow
• Smooth cast end tanks allow the best possible airflow in and out of the intercooler
• Optimal core design for maximum cooling efficiency with minimal pressure drop
• Rated to 600 whp
• Includes all necessary hardware, brackets, and accessories
• Fits left-hand and right-hand drive models
• Intercooler Stealth Silver
• Includes two different turbo outlet hoses for stock or aftermarket turbos
• Works with stock bypass valve or aftermarket blow-off valve
• Mishimoto Lifetime Warranty

COOLER OVERALL SIZE
44" x 9" x 5.5"

COOLER CORE SIZE
28" x 8.25" x 3.5"

COOLER CONSTRUCTION
Bar-and-plate with cast end tanks

CHASSIS CODES
GH
GE
GR
GV

HOT-SIDE INTERCOOLER PIPE SPECS
– Made from Polished Mandrel-Bent Aluminum
– 2.25" I.D.
– Includes Upper and Lower Intercooler Pipes

COLD-SIDE INTERCOOLER PIPE SPECS
– Made from Polished Mandrel-Bent Aluminum
– 2.75" I.D.
– Includes Upper and Lower Intercooler Pipes

BPV HOSE SPECS
– Application-Specific Bend for this Kit
– 1.25" I.D.
– 1.5" O.D.
– 4mm Thick

PCV HOSE SPECS
– 17.5" Length
– 0.45" I.D.
– 0.75" O.D.
– 4mm Thick

PURCHASE INCLUDES
(1) Bar-and-Plate Intercooler
(1) Steel Crash Bar w/Mounting Hardware
(2) Hot-Side Intercooler Pipes
(2) Cold-Side Intercooler Pipes
(1) BPV Flange Adapter
(1) Relocation Bracket w/Mounting Hardware for Coolant
Overflow (1) Turbo to Hot-Pipe Coupler (for Stock Turbo)
(1) Turbo to Hot-Pipe Coupler (for Aftermarket Turbo)
(1) 2.25" Straight Coupler
(2) 2.75" Straight Couplers
(1) 2.75" x 3.25" Long Straight Coupler
(1) 2" to 2.75" Transition Coupler
(1) BPV Recirculation Hose
(1) PCV Hose
(1) 2" T-Bolt Clamp
(4) 2.5" T-Bolt Clamps
(7) 3" T-Bolt Clamps
(1) 1.5" Worm-Gear Clamp
(1) Bypass Valve Gasket
(1) Black Nylon Hose Fitting, 1/2" I.D.
(1) Black Nylon Tee Hose Fitting, 1/2" I.D.
(1) 12" of Thermal Wrap
(1) 3' of 1/4" Rubber Hose
(1) Black Zip Ties

COOLER TANK WALL THICKNESS
3.5mm

COOLER INLET / OUTLET
2.75" I.D. / 3" O.D.

ENGINE CODES
EJ257

CRASH BAR SPECS
– Steel Construction with Black Powder Coat
– Application-Specific Mounting Holes
– 6.5 lb (2.9 kg)

TURBO TO HOT-SIDE HOSE SPECS (FOR STOCK TURBO)
– 1.875" I.D. / 2.2" O.D. – on Turbo Outlet
– 5mm Hose Thickness
– Withstands up to 400°F (204°C)
– Fits on Turbos with 1.97" (50mm) Maximum Compressor Outlet Size

TURBO TO HOT-SIDE HOSE SPECS (FOR AFTERMARKET TURBO)
– 2" I.D. / 2.4" O.D. on Turbo Outlet
– 5mm Hose Thickness
– Withstands up to 400°F (204°C)
– Fits on Turbos with 2.25" (57mm) Maximum Compressor Outlet Size

INTERCOOLER PIPE TO THROTTLE BODY COUPLER SPECS
Max Temperature: 330°F (166°C)
– 2.75" I.D.
– 3" O.D.
– 4mm Thick
– 3.25" Length

AIR INTAKE SPECS
– Pipe Diameter: 3"
– Pipe Material: Aluminum
– Oiled Filter: 38 g of Oil on Filter
– Note: Filter re-oil is not included with the Lifetime Warranty.

NOTE
Mishimoto recommends that this intercooler kit, with or without the optional air intake, not be used with the stock ECU programming. It is highly recommended that the customer be able to retune the vehicle’s ECU after installing the intercooler kit. Power gains will vary depending on the size of the turbo, exhaust system, fuel system, and type of ECU tune that is applied to the vehicle.

This kit is rated for approximately 700 whp, or 30 psi of turbo boost. Exceeding these horsepower or pressure limits could require a custom-size front-mount intercooler.