Pioneer Valve Stem Seal Positive Stop 11/32in PTFE Set of 100

Pioneer OS-450-100 valve stem seal. Features umbrella design, 11/32in valve stem, 0.530in guide, rubber construction, prevents oil leaks, sold as a set of 100.

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...

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...

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.

Chevrolet Performance valve stem oil seal for Small Block Chevy LT4 engines, GM LT-Series 1992-97. Features an umbrella design for 11/32in valve stems and 0.500in guides, made from rubber. Designed...