{"product_id":"walker-21409-exhaust-muffler-front","title":"Walker 21409 Exhaust Muffler - Front","description":"\u003ch2\u003eWalker Quiet-Flow SS Muffler for GM SUVs\u003c\/h2\u003e\u003cp\u003eWalker Quiet-Flow SS muffler Part Number 21409 is a specific-fit exhaust muffler built for select GM SUVs and crossovers. It uses stainless-steel body construction with an OE-style sound profile and precision fitment for direct replacement service.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eWalker Quiet-Flow SS line for OE-style exhaust sound and fit\u003c\/li\u003e\n\u003cli\u003e100% stainless-steel construction for the muffler body\u003c\/li\u003e\n\u003cli\u003eOval muffler design with a 27-inch body length\u003c\/li\u003e\n\u003cli\u003eCenter 2-bolt welded flange inlet for secure connection\u003c\/li\u003e\n\u003cli\u003eOffset pipe outlet with 2.5-inch inside diameter\u003c\/li\u003e\n\u003cli\u003eSpecific-fit application for select Buick, Chevrolet, GMC, Isuzu, and Oldsmobile models\u003c\/li\u003e\n\u003cli\u003eWalker 21409 exhaust muffler for direct replacement use\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct Details\u003c\/h2\u003e\u003cp\u003eThis Walker 21409 muffler is part of the Quiet-Flow SS product line, which focuses on precision fit, steady exhaust flow, and a factory-style sound level. The oval stainless-steel body measures 11 inches wide, 5.5 inches high, and 38.42 inches overall length, with a center inlet and offset outlet configuration. It is a combination-type muffler with a 2.5-inch outlet inside diameter and an aluminized finish.\u003c\/p\u003e\u003cp\u003eCompatible With 2002-2005 Chevrolet Trailblazer, 2002-2005 GMC Envoy, 2004-2005 Buick Rainier, 2004-2005 Isuzu Ascender without extended wheelbase, and 2002-2004 Oldsmobile Bravada. This part cross-references AP Exhaust 18169 for the same application.\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\u003eRestricted exhaust flow caused by internal deterioration\u003c\/li\u003e\n\u003cli\u003eFitment problems when replacing a welded factory-style muffler\u003c\/li\u003e\n\u003cli\u003eLoss of OE-style exhaust tone on GM SUV applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eVerify inlet and outlet configuration before installation, especially the center 2-bolt welded flange inlet and offset pipe outlet layout. This muffler is not reversible or tunable, so orientation matters during replacement. For welded assemblies, replace all required exhaust components as noted in the fitment information to ensure proper alignment and sealing.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eWalker Quiet-Flow SS mufflers are built with stainless-steel construction and engineered for direct-fit replacement on domestic and import vehicles. Part Number 21409 is backed by Walker’s Quiet-Flow SS product design standards for fit, flow, and OE-style sound.\u003c\/p\u003e","brand":"Walker","offers":[{"title":"Default Title","offer_id":52071747649717,"sku":"BDCN-21409","price":128.33,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/WK_21409_Fro.jpg?v=1775141995","url":"https:\/\/www.partcatalog.com\/products\/walker-21409-exhaust-muffler-front","provider":"PartCatalog","version":"1.0","type":"link"}