Enginetech S2887
Single nitrile umbrella seal for a 3/8-inch valve stem in selected classic American engines.
Enginetech S2887 is a single nitrile umbrella-style valve-stem seal for a 3/8-inch valve stem. It controls oil flow to the guide in classic valvetrains with adequate clearance for a moving umbrella seal.
Application / fitment
S2887 is catalogued for various engines using 3/8-inch valve stems. The range includes selected American V8 engines, but fitment must be confirmed by stem diameter, spring type, guide design and available space.
- selected Ford FE 332, 352 and 390 CID engines
- selected AMC V8 engines
- selected GM Big Block engines, including certain 454 CID / 7.4 L applications
- other 3/8-inch-stem applications where the cylinder-head design accepts an umbrella seal
The seal is not recommended in double-spring configurations where clearance is insufficient. It is not a stationary positive metal-clad seal fitted to a machined guide.
Technical information
- type: umbrella valve-stem seal
- material: nitrile rubber
- valve-stem diameter: 3/8" / 9.53 mm
- position: intake or exhaust depending on engine
- restriction: verify compatibility with double valve springs
- sales unit: 1 piece
Protect the keeper grooves during installation to avoid damaging the seal. Verify free movement and clearance from the spring, retainer and guide at full lift.