To ensure reliability, purchase GM part # 1647558 Seal,Exhaust Manifold Rear Pipe. It is sometimes referred to as Buick Exhaust Flange 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 Allure, Lesabre, Regal models.
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