Pioneer Valve Stem Seal Umbrella 11/32in Rubber Set of 100

Pioneer OS-1066-100 valve stem seal. Features positive stop design, 11/32in valve stem, 0.620in OD, 0.500in guide OD, PTFE construction, prevents oil leaks, sold as a set of 100.

Allstar Performance umbrella valve seals, 11/32in, 100pk, for race car engine valvetrain. Prevents oil leakage in racing setups. Bolt-on installation for track use.

Dart 26000021 valve stem seal for 11/32in valve stems. Features a positive seal design, 0.530in guide OD, made from PTFE, designed for racing builds to prevent oil leakage. Enhances durability in...

Brodix valve stem seal for race car engines. Features an 11/32in valve stem and 0.531in guide diameter, made from Viton for superior heat resistance and sealing. Positive stop design ensures minimal...

Pioneer PF-555-HD-200 valve lock. Features 7-degree angle, 11/32in valve stem, standard height, steel construction, blue paint finish, ensures secure valve retention, sold as a set of 100.