Subaru OEM Spark Plug WRX/ STI 2018-2021 | 22401AA910 vendor_Forced Performance This tool will give you

This tool will give you the perfect gap every time

but you need the specific bore size for both your wheel and car

but here they are

Flow Digressive Piston Technology

Subaru OEM Spark Plug WRX/ STI 2018-2021 | 22401AA910 vendor_Forced Performance This tool will give youFitment Information: Subaru STI 2018 2021 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.