To ensure reliability, purchase GM part # 15991754 Oxidation Catalytic Converter Assembly. It is sometimes referred to as GMC Catalytic Converter. 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 C3500, K1500, K2500 models.
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