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This Supertech intake valve set of 12 includes flat, black-nitrided valves sized 38.5 x 6.98 x 123.80 mm for full-head replacement on BMW S38 engines. The nitrided finish enhances stem hardness and longevity in intake service while preserving valve seat geometry. Supplied as a matched 12-piece kit, these valves are intended for S38 rebuilds and maintenance where nitrided intake valves are required.
Supertech BMW S38 38.5x6.98x123.80mm Flat Black Nitrided Intake Valve - Set of 12
