To ensure reliability, purchase GM part # 12709437 Tensioner Assembly, Tmg Chain. It is sometimes referred to as Buick Timing Belt Tensioner, Buick Timing Chain Tensioner. 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 Envision models.
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