This GSC Power Division chrome-polished exhaust valve, 28.5mm head, is offered as a single replacement valve for Toyota Supra and BMW B58/Z4 and M3/M4 S58 engines. It's a direct-fit exhaust valve option presented in a polished finish and sized to match the specified engine families for repair or rebuild work.
GSC P-D Toyota Supra/BMW Z4 B58 / BMW M3/M4 S58 Chrome Polished 28.5mm Head Exhaust Valve - Single