Supertech Inconel exhaust valves are sold as a set of eight for BMW M50, M52, S50 and S52 engines. The Inconel construction is specified in the product title and denotes material selected for high-temperature resistance and durability in exhaust service. This set of eight valves is provided for valve train rebuilds or performance engine work on the listed BMW inline-six engine families where Inconel exhaust valves are required.
Supertech BMW M50/M52/S50/S52 Inconel Exhaust Valve - Set of 8