To ensure reliability, purchase GM part # 12577855 Seal, Vacuum Source Manifold (O Ring). 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 Allure, Lesabre, Regal models. It fits Chevrolet Cruze, Equinox, Impala. It also fits GMC Terrain. This also fits Pontiac Bonneville, Grand Prix.
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