Quiet the roar and keep exhaust gases flowing cleanly with the Walker Quiet-Flow SS Exhaust Muffler 21719, a bolt-on replacement muffler with a 2.75" outlet (inside diameter). Walker catalogs it as a direct-fit for the Mazda 3 — see the Buyer's Guide tab to confirm the exact year and engine for your vehicle before ordering.
100% stainless-steel body: Quiet-Flow SS uses a fully stainless-steel muffler body for longer life than aluminized units, and an internal drainage system helps reduce moisture collection inside the muffler.
Direct-fit installation: Bolts in as a replacement using factory-style routings, brackets and hangers, so it installs without specialized fabrication or welding.
Built to last: Internal partitions and mechanically joined tubes allow the muffler to expand and contract with temperature changes to minimize distortion, while spun-locked heads and OE-style spot welds add stability.
Factory-style sound: OE-style louvered tubes lower noise levels and OE-style domed heads help reduce radiated noise, and each design is acoustic- and flow-tested. Backed by Walker's limited lifetime warranty and 90-Day Safe and Sound Guarantee.
