Torque Solution TS-SU-755 Billet Thermostat Housing for 2002-14 Subaru WRX

Vehicle Fitment

• 2002-2014 Subaru WRX (EJ20/EJ25 engines) (AWD)
• 2004-2021 Subaru WRX STI (EJ engines) (AWD) - Fitment through 2021 confirmed. 2022+ unconfirmed at time of listing.

Features

• CNC-machined from billet 6061-T6 aluminium for enhanced durability and thermal performance
• Black anodised finish with Torque Solution logo for corrosion resistance and refined engine bay appearance
• Direct-fit replacement for OEM thermostat housing on Subaru EJ-series engines
• Improved coolant flow and heat dissipation compared to original cast housing
• Includes zinc-plated install hardware for reliable mounting
• Provides stronger mounting surface, reducing risk of crack or failure under high-boost or track use
• Suitable for performance builds and tuned Subaru WRX/STI applications
• Backed by the manufacturer's limited lifetime warranty when installed under normal use conditions

Specifications

• Material: Billet 6061-T6 aluminium
• Finish: Black anodised aluminium with engraved branding
• Install position: Thermostat housing replacement for Subaru EJ-series engine coolant system
• OEM part numbers replaced: Subaru 11060AA060 / 11060AA061 (depending on application)
• Drivetrain: All-wheel drive (AWD) only - applicable to specified Subaru models
• Fitment: Confirmed through 2021 for WRX STI coverage; 2022 and later model years unconfirmed at time of listing

Included Components

• 1x billet aluminium thermostat housing
• 2x M6 x 25 zinc-plated flange bolts
• Installation instructions and manufacturer warranty documentation

Product Description

The Torque Solution TS-SU-755 Billet Thermostat Housing is designed for Subaru EJ-series engines powering WRX and STI models. Crafted from high-strength 6061-T6 aluminium and finished in black anodised coating, it replaces the OEM plastic or cast housing with a more robust, performance-oriented unit. This upgrade not only improves engine bay aesthetics but also offers enhanced thermal flow stability and durability under elevated boost or performance conditions.

Installation is straightforward in the factory location and uses included hardware. This housing is ideal for enthusiasts who run modified EJ engines or track their WRX/STI, as it addresses common failure points in the coolant system under stress. Ensure your vehicle matches the EJ-series engine and fitment years (2002-14 WRX, 2004-21 STI) and verify the thermostat housing design before installation.

Fitment is confirmed through 2021 for the STI listed above; coverage for 2022 and newer models is **unconfirmed** at the time of this listing. Always verify compatibility with your vehicle's engine and coolant system layout before purchase.