To ensure reliability, purchase GM part # 11589312 Bolt, Heavy Hx Flange Head. It is sometimes referred to as GM Belt Tensioner Bolt. 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. It also fits Chevrolet Cobalt, Equinox, Express. This also fits GMC Savana.
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