To ensure reliability, purchase GM part # 84289388 Muffler Assembly, Exhaust (W/ Exhaust Pipe). It is sometimes referred to as GM 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 Cadillac XTS models.
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