Tomioka Racing Oil Cooler Kit with Thermostat - 2008-2021 Subaru WRX / STI

Tomioka Racing Oil Cooler Kit with Thermostat - 2008-2021 Subaru WRX / STI

Tomioka Racing's oil cooler kit for the 2008-2021 Subaru WRX and STI uses a 16-row aluminum cooler core with high-quality stainless steel braided lines and fittings.

16-Row Stainless-Line Oil Cooler for Street and Track

Tomioka Racing's oil cooler kit for the 2008-2021 Subaru WRX and STI uses a 16-row aluminum cooler core with high-quality stainless steel braided lines and fittings. Under sustained high-load driving -- track days, canyon runs, or extended spirited street use -- engine oil temperatures rise to levels that accelerate wear and reduce oil's ability to protect internal components. The 16-row core provides effective heat rejection to keep oil in its optimal operating temperature range.

Extends Oil Life and Protects Internals

Elevated oil temperatures reduce viscosity and break down oil chemistry faster, shortening oil life and reducing film strength at critical interfaces like turbo bearings and rod bearings. The Tomioka kit prolongs the useful life of the oil between changes and adds a meaningful margin of protection for engines running aggressive tunes or elevated boost. The stainless braided lines handle the pressure and temperature demands of the application.

Key Features

• 16-row oil cooler core
• High quality stainless steel braided lines and fittings
• Prolongs engine oil life and protects internal components
• Temperature controlled oil sandwich plate
• Suitable for street and track use
• Increases overall engine oil capacity

Fitment Notes

• Fits 2008-2021 Subaru STI
• Fits 2008-2021 Subaru WRX

Straight From Subispeed

For WRX and STI builds that see track days or sustained aggressive driving, an oil cooler is one of the most straightforward durability upgrades available. The Tomioka 16-row kit is well-priced for what it is and installs cleanly on the 2008-2021 platform. Pair with a fresh oil analysis baseline before and after installation to confirm the temperature improvement in your specific application.

What's Included

• 16-row aluminum oil cooler core
• Stainless steel braided oil lines
• All fittings and hardware
• Mounting brackets

About Tomioka Racing

Tomioka Racing has been engineering bolt-on performance parts for Subaru platforms since 2007, with a design philosophy built around factory-style installation and real-world reliability. Every Tomioka Racing product is engineered to work with the factory setup -- clean installation, correct fitment, and durability under sustained use. For WRX, STI, BRZ, and the 86 platform, Tomioka Racing offers one of the most focused and thoroughly developed bolt-on catalogs available at this price point.