To ensure reliability, purchase GM part # 19418964 MUFFLER ASM,EXH(W/EXH & T/PIPE & 3WAY CTLTC CONV)"KIT". It is sometimes referred to as GMC Muffler. 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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