Valve Stem Seals

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.

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 high-performance setups. Sold as each.

Chevrolet Performance exhaust valve stem seal for Chevy V8 engines. Features a positive stop design for 5/16in valve stems with a 0.630in OD, made from steel with a Viton seal for durability. Designed for street or racing builds, prevents oil leakage for...

Chevrolet Performance intake valve stem oil seal kit for Chevy V8 engines, set of 8. Features seals for 5/16in valve stems and 0.500in guide OD, made from Viton for durability and heat resistance. Designed for street or racing builds, ensures leak-free...

Chevrolet Performance exhaust valve stem seal set for Chevy V8 engines, set of 8. Features positive stop design for 5/16in valve stems and 0.500in guides, made from rubber for a reliable seal. Designed for street or racing builds, prevents oil leakage...

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 for racing or street builds, prevents oil leakage for...

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.