To ensure reliability, purchase GM part # 120390 Washer Plain 9/16 Inside Diameter/ 3/8 Outside Diameter Zinc. 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 Chevrolet Blazer, P30, Silverado models. It fits GMC G3500, Sierra, Suburban.
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