Subaru OEM Harness Adapter (Part Code 24037*C) STI 2017-2021 | 24037AA400 vendor_SHW Performance up to 1200 HP -

up to 1200 HP - forced air induction

They gear is also heat treated for longevity

The drilled holes provide a better cooling effect from the heat produced during braking

Designed for high-horsepower and high-RPM K-series builds

Subaru OEM Harness Adapter (Part Code 24037*C) STI 2017-2021 | 24037AA400 vendor_SHW Performance up to 1200 HP -Product Fitment: 2017 2021 Subaru STI 24037AA400 Harness Adapter is Part Code 24037*C in the diagram Warranty Disclaimer: Subaru of America will only warranty parts installed by a CERTIFIED Subaru Dealership. The part being installed must also match the vehicle VIN. IE If you install an STi block in a WRX at your friends shop, do not expect a warranty claim to come through if it explodes! Please use your best judgement.