The Supertech exhaust valve set for Mini Cooper B48 engines comprises Inconel single-groove, sodium-filled exhaust valves supplied as a set of eight. Specified for B48 cylinder heads, these valves are detailed by material and construction in the listing and intended as direct-fit replacement exhaust valves for the engine family noted.
Supertech Mini Cooper B48 Inconel Single groove Sodium Filled Exhaust Valve - Set of 8