2004-2007 US STI 6-speed manual transmission

Which cars does it fit? GD 2002-2007: fits with extra parts or work (Confirmed).

Last verified 2026-10-20

Category: drivetrain · Brand: Subaru

VehicleYearsResultConfidence
Subaru WRX (GD/GG, 2002-2007)2002-2007Fits with extra parts or workConfirmed

Key specs

Short answers by generation

Will 2004-2007 US STI 6-speed manual transmission fit a Subaru WRX (GD/GG, 2002-2007)?

Yes, with extra parts or work (Confirmed, 3 sources; applies to: manual WRX; parts list differs by year). Two NASIOC guides and a swap-kit vendor agree the STI 6-speed goes into a GD WRX with: the 6MT transmission mount (different from 5MT), STI shift linkage, 6MT clutch fork and a suitable driveshaft (WRX automatic shaft bolts to the R160; STI shaft needs a flange change). Full answer and sources

Related known issues

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