To ensure reliability, purchase GM part # 89017473 Piston Asm,(W/ Pinion & Retainer) (0.5 Mm Outside). It is sometimes referred to as GMC Piston. 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, Yukon models.
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