{"product_id":"walker-21736-exhaust-muffler-rear","title":"Walker 21736 Exhaust Muffler - Rear","description":"\u003ch2\u003eWalker Quiet-Flow Muffler for Audi A4\u003c\/h2\u003e\u003cp\u003eWalker Quiet-Flow 21736 is a specific-fit exhaust muffler built for rear installation on select Audi applications. It combines a 2.5-inch inlet and dual 2.5-inch outlets with an OE-style sound profile and a flow-focused internal design.\u003c\/p\u003e\u003cp\u003eUse this muffler when you need a direct replacement for the factory exhaust layout on 2009-2013 Audi A4, 2009-2012 Audi A4 Quattro, and 2010-2011 Audi A5 Quattro rear applications.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePart number 21736\u003c\/li\u003e\n\u003cli\u003eWalker Quiet-Flow product line\u003c\/li\u003e\n\u003cli\u003eSpecific fit for rear exhaust placement\u003c\/li\u003e\n\u003cli\u003e2.5-inch inlet outside diameter\u003c\/li\u003e\n\u003cli\u003eDual 2.5-inch outlet outside diameters\u003c\/li\u003e\n\u003cli\u003eCombination muffler type with dual tips\u003c\/li\u003e\n\u003cli\u003eSteel body with aluminized finish\u003c\/li\u003e\n\u003cli\u003eOffset inlet configuration\u003c\/li\u003e\n\u003cli\u003eIrregular body shape\u003c\/li\u003e\n\u003cli\u003eLimited lifetime warranty and 90-day Safe and Sound guarantee\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct Details\u003c\/h2\u003e\u003cp\u003eWalker Quiet-Flow mufflers are built for drivers who want a replacement muffler that follows OE-style sound characteristics while maintaining exhaust flow. This unit uses a single pipe-connection inlet and dual pipe-connection outlets, making it a direct match for the listed rear exhaust applications. The aluminized finish and steel construction support everyday corrosion resistance in a standard replacement setup. If you are sourcing a Walker 21736 muffler for an Audi A4 or Audi A4 Quattro, this part is configured for the factory-style rear exhaust arrangement.\u003c\/p\u003e\u003cp\u003eThis part cross-references Audi OE number 8K0253609 for the same application.\u003c\/p\u003e\u003ch2\u003eWhat It Helps Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDamaged or rusted rear muffler assembly\u003c\/li\u003e\n\u003cli\u003eExhaust noise that is louder than factory levels\u003c\/li\u003e\n\u003cli\u003eRestricted exhaust flow from a worn muffler\u003c\/li\u003e\n\u003cli\u003eNeed for a direct-fit replacement on Audi A4 and Audi A5 Quattro rear applications\u003c\/li\u003e\n\u003cli\u003eFactory exhaust outlet configuration replacement\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eConfirm the vehicle year, model, and rear exhaust layout before installation. This muffler is not reversible and is not tunable, so orientation matters during fitment. Verify the 2.5-inch inlet and dual 2.5-inch outlet dimensions against the existing exhaust system before final assembly.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eWalker backs Quiet-Flow mufflers with a limited lifetime warranty and a 90-day Safe and Sound guarantee. The Quiet-Flow line is positioned as an OE-style replacement option for top-selling domestic and foreign vehicles, including select Audi A4, Audi A4 Quattro, and Audi A5 Quattro applications.\u003c\/p\u003e","brand":"Walker","offers":[{"title":"Default Title","offer_id":52406894985397,"sku":"BDCN-21736","price":479.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/WK_21736_Fro.jpg?v=1777775928","url":"https:\/\/www.partcatalog.com\/products\/walker-21736-exhaust-muffler-rear","provider":"PartCatalog","version":"1.0","type":"link"}