To ensure reliability, purchase GM part # 336978 Bolt, Hexagon Head Lock (Patch) .375X16.00X .875 Pc. 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 Astro, Blazer, P30 models. It fits GMC C2500, K1500, Suburban.
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