To ensure reliability, purchase GM part # 15091830 3Way Catalytic Convertor Assembly (W/ Exhaust Manifold P. It is sometimes referred to as GMC Catalytic Converter, GMC Exhaust Pipe. 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 Sierra models.
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