This GSC P‑D exhaust valve set is specified for Ford Mustang 5.0L Coyote Gen 1/2 cylinder heads with a 31.75mm head dimension (standard). Offered as a set of eight, the listing notes chrome-polished finish and the standard-size exhaust valve for direct replacement in applicable 5.0L Coyote Gen 1 and Gen 2 heads.
GSC P-D Ford Mustang 5.0L Coyote Gen 1/2 31.75mm Head (STD) Chrome Polished Exhaust Valve - Set of 8