To ensure reliability, purchase GM part # 12549421 Ring,Trans 1st & 2nd Gear Syn Retainer *Yellow. It is sometimes referred to as GM Synchronizer Ring. 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 S10 models. It fits GMC Sonoma.
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