To ensure reliability, purchase GM part # 12557831 Insulator, Camshaft Cover Bolt *Gray. It is sometimes referred to as GM Valve Cover Gasket. Directly from GM, genuine parts are superb with regards to quality, longevity, and fit. Every single part passed stringent quality testing, so you can be sure that it's safe, durable, and built to perform like your original parts. This part fits specific Buick Lucerne models. It fits Cadillac DTS, Deville, Escalade. It also fits Chevrolet Avalanche, Express, Silverado. This also fits GMC Savana, Sierra, Yukon.
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