This is an OEM Subaru 2.5L oil pan, required to fit a aftermarket headers on a 2002-2005 WRX. The 2.5L oil pan allows for clearance of the crossover pipe on the Perrin header. This is the stock oil pan on all 04-20 STi and 06-14 WRX models.
Part #: 11109AA131
Warranty Disclaimer:Subaru of America will only warranty parts installed on a car that has a matching VIN to that part.
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.