To ensure reliability, purchase GM part # 12555637 Engine Crankshaft. It is sometimes referred to as GMC Crankshaft. 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 GMC Savana, Sierra, Sonoma models.
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