Supertech Performance Valve Guides - SET OF 12

Set of 12 Supertech manganese-bronze intake and exhaust valve guides for supported BMW S54 cylinder-head applications.

• 6 mm valve-stem size
• 12.03 mm outside diameter
• Set of 12 guides

Valve-guide installation and final sizing require appropriate cylinder-head measuring and machining equipment. Confirm the required fitment with the engine builder before ordering.