Fel-Pro 448 RR Engine Valve Stem Oil Seal

Fel-Pro is known for making gaskets and seals that work well in real-world repair situations, even on surfaces that aren't perfect. This 448RR valve stem seal is a good example of that approach. It's designed to keep oil from getting into your engine's combustion chambers through the valve guides, which helps prevent blue smoke from the exhaust and keeps your spark plugs cleaner.

This particular seal is an O-ring style, measuring 3 1/4 inches on the inside and 3 7/16 inches on the outside. It's made with proprietary materials and designed to meet or exceed original equipment specs, so you can trust it to fit right and do its job. Fel-Pro focuses on creating sealing solutions that hold up in the shop, not just on the showroom floor.

This is a 5-pack, so you'll have enough seals for a typical cylinder head job. When you're rebuilding the top end of your engine, making sure these small seals are properly seated is key to a good, long-lasting seal.