Subaru OEM PCV Assembly 17-21 STI | 11815AC810 PO_bydane The center or shim layer

The center or shim layer is an uncoated stainless steel layer that is folded back upon itself to create the locking portion of the bore seal

This map is for ONE fuel type such as Pump 91 OR 93 gas

The Non-Aggressive Rear Diffuser was designed for owners looking for function and form

DYNAMIC DIRECTIONAL

Subaru OEM PCV Assembly 17-21 STI | 11815AC810 PO_bydane The center or shim layerProduct Fitment: 2017 2021 Subaru STI 11815AC810 Pcv Hose Assembly is Part Code 11815*C in the diagram below 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.