MAHLE Original GMC S15 86-85 Engine Valve Stem Seal Set

These valve stem seals are made from a durable nitrile material, which is known for its resistance to oil and heat. When you're rebuilding the top end of an engine, or just noticing some blue smoke on startup, replacing these seals is a common and effective step. They fit snugly around the valve stem, creating a barrier that stops oil from leaking down into the combustion chamber past the valve guide. This helps maintain proper oil levels and reduces exhaust smoke.

This set is designed to fit a broad range of vehicles, covering many popular domestic and some import models from the 1970s through the early 1990s. For example, you'll find these seals suitable for many Buick Century, Chevrolet S10, and Ford Escort applications. Ensuring you have the correct seals is key to a successful engine repair, preventing oil consumption and improving emissions.