Cometic Positive Ring and Band 8 x 12.3 x 12 x 17 Viton

This listing is for one Cometic Positive Ring and Band valve stem seal, part number 3164V. This seal is made from Viton material and features a positive ring and band design. It's designed to fit a wide range of vehicles, including models like the Chevrolet Astro, Buick Century, and Cadillac Fleetwood, among many others.

Valve stem seals are crucial for keeping oil from entering the combustion chamber. When these seals wear out, you might notice blue smoke from your exhaust, especially on startup, and increased oil consumption. This Viton seal is a well-built replacement that helps restore proper engine function and reduce oil burning. The Viton material is known for its resistance to heat and oil, making it a solid choice for this application.