To ensure reliability, purchase GM part # 20854455 3Way Catalytic Convertor Assembly (W/ Exhaust Manifold P. It is sometimes referred to as GM 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.
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