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Mishimoto 08+ Subaru WRX/STi X-LINE (Thicker Core) Aluminum Radiator - Mishimoto MMRAD-STI-08X
Mishimoto 08+ Subaru WRX/STi X-LINE (Thicker Core) Aluminum Radiator - Mishimoto MMRAD-STI-08X
Mishimoto 08+ Subaru WRX/STi X-LINE (Thicker Core) Aluminum Radiator - Mishimoto MMRAD-STI-08X
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Mishimoto 08+ Subaru WRX/STi X-LINE (Thicker Core) Aluminum Radiator

Mishimoto
MISMMRAD-STI-08X
748354803488
Radiators
27 Units In Stock
$ 451.00 $ 409.95
$ 409.95

Replace your stock radiator with the Mishimoto X-Line Aluminum Radiator MMRAD-STI-08X, featuring a 42mm thick 2-row core for 50 percent more volume than OEM. This direct-fit upgrade cools 2008-2021 Subaru WRX/STI models, plus Legacy GT, Outback XT, Forester XT, and Impreza variants with EJ25 turbo engines.

Key Features

  • All-Aluminum Build: TIG-welded assembly with billet end tanks resists corrosion and weighs 12.8 lbs, lighter than stock while adding durability.
  • 42mm X-Line Core: Proprietary tube-and-fin layout with 24.8 x 16.5 x 1.65-inch dimensions expands surface area for faster heat dissipation and lower operating temps.
  • Direct-Fit Design: CNC-machined inlet/outlet fittings match OEM sizes and positions, bolts to factory mounts with no cutting or fabrication.
  • Transmission Cooler Ready: Includes OEM-style ports for easy integration of stock or aftermarket coolers.
  • Full 6061 aluminum construction with 42mm thick X-Line core, doubling heat rejection surface over stock 28mm unit.
  • Drain coolant, remove OEM radiator, and transfer fans/sensors. full install takes 1-2 hours.

Fitment

Years Make Model Application Notes
2009-2013 Subaru Forester XT, XT Limited, XT Touring
2008-2014 Subaru Impreza 2.5 GT, WRX, WRX Limited, WRX Premium, WRX STI Limited, WRX STI Special Edition
2005-2009 Subaru Legacy GT, GT Limited, GT spec.B
2005-2006 Subaru Outback XT
2015-2021 Subaru WRX STI Base, Launch Edition, Limited, Series.HyperBlue

Specifications

Brand Mishimoto
Manufacturer Part Number MMRAD-STI-08X
Product Type Radiators
Fitment Type Vehicle Specific
GTIN 748354803488
Condition New

What's Included

One new Mishimoto radiators identified by manufacturer part number MMRAD-STI-08X. Hardware, adapters, hoses, clamps, fluids, wiring, tools, and companion parts are included only when expressly supplied for this exact part number.

About Mishimoto

Mishimoto develops automotive cooling, intake, oil-management, exhaust, drivetrain, and vehicle-accessory products. Fitment, dimensions, interfaces, and included components remain exact-part-number specific.

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Frequently Asked Questions

Will this Mishimoto product fit my 2009-2013 Subaru Forester?
That vehicle range is listed, but confirm the engine, body configuration, production date, factory interfaces, and every current Mishimoto application note for this exact part number.

What connections and clearances should I verify?
Confirm every hose size, fitting, mounting point, fan or shroud clearance, sensor provision, fluid path, and surrounding component before installation.

Does the cooling system need to be serviced after installation?
Follow the vehicle and Mishimoto procedures for the exact product. Refill with the correct fluid, bleed trapped air, inspect for leaks, and recheck the level after heat cycling.

Installation Instructions

Follow the current Mishimoto instructions and vehicle service information for part number MMRAD-STI-08X. Verify every interface and clearance, work on a cool and safely supported vehicle, use the specified fluids, fasteners, seals, and torque procedures, inspect for leaks or contact, and recheck the installation after the first heat cycle.

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Military & First Responder Discount Program

Black Ops Auto Works proudly honors active duty military, veterans, National Guard, reserves, police officers, firefighters, and EMTs with an exclusive 5% discount on all performance parts and carbon fiber upgrades. Verify instantly and start saving today.

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