{"product_id":"walker-21572-exhaust-muffler","title":"Walker 21572 Exhaust Muffler","description":"\u003ch2\u003eWalker Quiet-Flow SS Muffler for HHR\u003c\/h2\u003e\u003cp\u003eWalker Quiet-Flow SS muffler Part Number 21572 is a direct-fit exhaust muffler for select 2006-2011 Chevrolet HHR applications. It uses 100% stainless-steel body construction with an OE-style sound profile, precision fit, and a flow-focused internal design for a clean replacement on the Chevrolet HHR exhaust system.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSpecific-fit exhaust muffler for select Chevrolet HHR models\u003c\/li\u003e\n\u003cli\u003eOval muffler shape with a combination muffler design\u003c\/li\u003e\n\u003cli\u003e100% stainless-steel body construction\u003c\/li\u003e\n\u003cli\u003eAluminized finish\u003c\/li\u003e\n\u003cli\u003eSingle 1.75 in. inlet with offset configuration\u003c\/li\u003e\n\u003cli\u003eSingle 2 in. outlet with tip-style outlet configuration\u003c\/li\u003e\n\u003cli\u003eOverall length: 27.75 in.; body length: 18 in.; body width: 9 in.; body height: 7 in.\u003c\/li\u003e\n\u003cli\u003eWalker Quiet-Flow SS product line for OE-style sound and fit\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct Details\u003c\/h2\u003e\u003cp\u003eWalker Quiet-Flow SS is the brand’s stainless-steel muffler line built for direct replacement applications where fit, flow, and sound control matter. Part 21572 is shaped as an oval muffler with offset inlet and outlet placement, making it a fitment-specific solution for the exhaust layout used on 2006-2011 Chevrolet HHR models. This part cross-references AP Exhaust 2507 for the same application.\u003c\/p\u003e\u003cp\u003eFits 2006-2011 Chevrolet HHR, N\/A. Fits 2006-2011 Chevrolet HHR, N\/A. Fits 2006-2011 Chevrolet HHR, N\/A.\u003c\/p\u003e\u003ch2\u003eCommon Exhaust Issues It Can Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRust damage or corrosion in the original muffler body\u003c\/li\u003e\n\u003cli\u003eExhaust noise increase from a worn internal muffler core\u003c\/li\u003e\n\u003cli\u003ePoor exhaust tone after the factory muffler deteriorates\u003c\/li\u003e\n\u003cli\u003eFitment problems when replacing a damaged OE-style muffler\u003c\/li\u003e\n\u003cli\u003eRestricted exhaust flow caused by an aging muffler assembly\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify inlet and outlet diameters, offset configuration, and overall dimensions before installation. This muffler uses pipe connections and is not reversible or tunable, so orientation should match the vehicle’s exhaust routing. For welded assemblies, replace all required related parts during service to maintain proper alignment on the Chevrolet HHR exhaust system.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eWalker Quiet-Flow SS mufflers are built with stainless-steel construction and are engineered for precision fit and OE-style sound characteristics. Part Number 21572 is listed for 2006-2011 Chevrolet HHR applications and is supported by the Quiet-Flow SS product line’s focus on direct replacement performance.\u003c\/p\u003e","brand":"Walker","offers":[{"title":"Default Title","offer_id":52071755022517,"sku":"BDCN-21572","price":122.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/WK_21572_Fro.jpg?v=1775142012","url":"https:\/\/www.partcatalog.com\/products\/walker-21572-exhaust-muffler","provider":"PartCatalog","version":"1.0","type":"link"}