To ensure reliability, purchase GM part # 12543819 Gear Asm,1st. It is sometimes referred to as Chevrolet Reverse Idler Gear. 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, K2500, S10 models.
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