GSC Power Division manganese bronze exhaust valve guide set with stopper, sold as a set of 12 for BMW and Toyota B58 engines and BMW S58 applications. These guides locate and constrain exhaust valves within the head to maintain valve alignment and sealing. Supplied in sets suitable for engine rebuilds or valve-service work, they provide a direct replacement option where the B58 and S58 fitment is specified.
GSC P-D BMW/Toyota B58 / BMW S58 Manganese Bronze Exhaust Valve Guide w/Stopper - Set of 12