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Cadillac STS Mufflers
This page brings together mufflers for the Cadillac STS covering model years 2005 through 2011. The range includes direct-fit and stainless steel exhaust mufflers sized and shaped for the STS. Choose your model year above and this page keeps only the mufflers that fit your Cadillac STS. Each listing is matched to our vehicle fitment data before it appears here.
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MBRP AT6404SP Sport Series Slip-On Exhaust Muffler Yamaha Grizzly 600
Part: AT6404SP
Vehicle Specific
$314.99
In Stock (10+)
What's here for your Cadillac STS
- Direct-fit exhaust mufflers designed to align with the STS exhaust routing
- Stainless steel muffler construction for resistance to corrosion and heat
- Replacement mufflers sized to OE exhaust dimensions
The widest selection here comes from Walker Exhaust, AP Exhaust, and MBRP, each offering distinct muffler styles within the Cadillac STS fitment range. Other categories Cadillac STS owners shop for: Cadillac STS Shocks and Struts, Cadillac STS Valve Train Parts and Cadillac STS Tires, or browse all Cadillac STS parts and accessories.