{"product_id":"walker-exhaust-muffler-21423","title":"WALKER - Exhaust Muffler - 21423","description":"\u003ch2 data-start=\"426\" data-end=\"452\"\u003e\u003cstrong data-start=\"429\" data-end=\"452\"\u003eProduct Description\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-start=\"454\" data-end=\"835\"\u003eThe Walker Quiet-Flow® SS \u003cstrong data-start=\"480\" data-end=\"489\"\u003e21423\u003c\/strong\u003e muffler is engineered to match OE exhaust performance while providing long-term durability through its \u003cstrong data-start=\"593\" data-end=\"630\"\u003e100% stainless-steel muffler body\u003c\/strong\u003e, internal drainage system, and precisely engineered acoustic design. Built as a \u003cstrong data-start=\"711\" data-end=\"746\"\u003edirect-fit, bolt-on replacement\u003c\/strong\u003e, it installs easily with factory-style hangers and pipe routing—no fabrication required.\u003c\/p\u003e\n\u003cp data-start=\"837\" data-end=\"1066\"\u003eIts premium construction and louvered tube internals deliver a smooth, factory-quality exhaust tone while reducing radiated noise. This model is designed for GM full-size SUVs and trucks equipped with the 4.8L or 5.3L V8 engines.\u003c\/p\u003e\n\u003chr data-start=\"1068\" data-end=\"1071\"\u003e\n\u003ch2 data-start=\"1073\" data-end=\"1092\"\u003e\u003cstrong data-start=\"1076\" data-end=\"1092\"\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul data-start=\"1094\" data-end=\"1562\"\u003e\n\u003cli data-start=\"1094\" data-end=\"1168\"\u003e\n\u003cp data-start=\"1096\" data-end=\"1168\"\u003e\u003cstrong data-start=\"1096\" data-end=\"1133\"\u003e100% stainless-steel muffler body\u003c\/strong\u003e for maximum corrosion resistance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1169\" data-end=\"1229\"\u003e\n\u003cp data-start=\"1171\" data-end=\"1229\"\u003e\u003cstrong data-start=\"1171\" data-end=\"1192\"\u003eAluminized finish\u003c\/strong\u003e for additional exterior protection\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1230\" data-end=\"1287\"\u003e\n\u003cp data-start=\"1232\" data-end=\"1287\"\u003e\u003cstrong data-start=\"1232\" data-end=\"1260\"\u003eInternal drainage system\u003c\/strong\u003e reduces moisture buildup\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1288\" data-end=\"1355\"\u003e\n\u003cp data-start=\"1290\" data-end=\"1355\"\u003e\u003cstrong data-start=\"1290\" data-end=\"1325\"\u003eOE-style hangers \u0026amp; pipe routing\u003c\/strong\u003e for direct-fit installation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1356\" data-end=\"1428\"\u003e\n\u003cp data-start=\"1358\" data-end=\"1428\"\u003e\u003cstrong data-start=\"1358\" data-end=\"1390\"\u003eLouvered tubes \u0026amp; domed heads\u003c\/strong\u003e provide factory-style tone and flow\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1429\" data-end=\"1503\"\u003e\n\u003cp data-start=\"1431\" data-end=\"1503\"\u003e\u003cstrong data-start=\"1431\" data-end=\"1472\"\u003eSpun-locked heads \u0026amp; mechanical joints\u003c\/strong\u003e resist distortion under heat\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1504\" data-end=\"1562\"\u003e\n\u003cp data-start=\"1506\" data-end=\"1562\"\u003e\u003cstrong data-start=\"1506\" data-end=\"1560\"\u003eLifetime warranty + 90-Day Safe \u0026amp; Sound® Guarantee\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1564\" data-end=\"1567\"\u003e\n\u003ch2 data-start=\"1569\" data-end=\"1600\"\u003e\u003cstrong data-start=\"1572\" data-end=\"1600\"\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cdiv class=\"_tableContainer_1rjym_1\"\u003e\n\u003cdiv class=\"group _tableWrapper_1rjym_13 flex w-fit flex-col-reverse\" tabindex=\"-1\"\u003e\n\u003ctable data-start=\"1602\" data-end=\"2308\" class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead data-start=\"1602\" data-end=\"1635\"\u003e\n\u003ctr data-start=\"1602\" data-end=\"1635\"\u003e\n\u003cth data-start=\"1602\" data-end=\"1622\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1604\" data-end=\"1621\"\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth data-start=\"1622\" data-end=\"1635\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1624\" data-end=\"1633\"\u003eValue\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody data-start=\"1669\" data-end=\"2308\"\u003e\n\u003ctr data-start=\"1669\" data-end=\"1689\"\u003e\n\u003ctd data-start=\"1669\" data-end=\"1681\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1671\" data-end=\"1680\"\u003eShape\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"1681\" data-end=\"1689\" data-col-size=\"sm\"\u003eOval\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1690\" data-end=\"1717\"\u003e\n\u003ctd data-start=\"1690\" data-end=\"1703\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1692\" data-end=\"1702\"\u003eFinish\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1703\" data-end=\"1717\"\u003eAluminized\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1718\" data-end=\"1754\"\u003e\n\u003ctd data-start=\"1718\" data-end=\"1735\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1720\" data-end=\"1734\"\u003eInlet Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1735\" data-end=\"1754\"\u003ePipe Connection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1755\" data-end=\"1792\"\u003e\n\u003ctd data-start=\"1755\" data-end=\"1773\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1757\" data-end=\"1772\"\u003eOutlet Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1773\" data-end=\"1792\"\u003ePipe Connection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1793\" data-end=\"1833\"\u003e\n\u003ctd data-start=\"1793\" data-end=\"1821\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1795\" data-end=\"1820\"\u003eInlet Inside Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1821\" data-end=\"1833\"\u003e2.625 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1834\" data-end=\"1875\"\u003e\n\u003ctd data-start=\"1834\" data-end=\"1863\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1836\" data-end=\"1862\"\u003eOutlet Inside Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1863\" data-end=\"1875\"\u003e2.625 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1876\" data-end=\"1906\"\u003e\n\u003ctd data-start=\"1876\" data-end=\"1894\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1878\" data-end=\"1893\"\u003eBody Height\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1894\" data-end=\"1906\"\u003e7.000 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1907\" data-end=\"1938\"\u003e\n\u003ctd data-start=\"1907\" data-end=\"1925\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1909\" data-end=\"1924\"\u003eBody Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1925\" data-end=\"1938\"\u003e24.000 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1939\" data-end=\"1968\"\u003e\n\u003ctd data-start=\"1939\" data-end=\"1956\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1941\" data-end=\"1955\"\u003eBody Width\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1956\" data-end=\"1968\"\u003e9.000 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1969\" data-end=\"2003\"\u003e\n\u003ctd data-start=\"1969\" data-end=\"1990\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1971\" data-end=\"1989\"\u003eOverall Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1990\" data-end=\"2003\"\u003e28.000 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2004\" data-end=\"2032\"\u003e\n\u003ctd data-start=\"2004\" data-end=\"2026\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"2006\" data-end=\"2025\"\u003eHanger Included\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2026\" data-end=\"2032\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2033\" data-end=\"2064\"\u003e\n\u003ctd data-start=\"2033\" data-end=\"2054\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"2035\" data-end=\"2053\"\u003eInlet Location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2054\" data-end=\"2064\"\u003eOffset\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2065\" data-end=\"2097\"\u003e\n\u003ctd data-start=\"2065\" data-end=\"2087\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"2067\" data-end=\"2086\"\u003eOutlet Location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2087\" data-end=\"2097\"\u003eOffset\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2098\" data-end=\"2124\"\u003e\n\u003ctd data-start=\"2098\" data-end=\"2119\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"2100\" data-end=\"2118\"\u003eInlet Quantity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2119\" data-end=\"2124\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2125\" data-end=\"2152\"\u003e\n\u003ctd data-start=\"2125\" data-end=\"2147\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"2127\" data-end=\"2146\"\u003eOutlet Quantity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2147\" data-end=\"2152\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2153\" data-end=\"2202\"\u003e\n\u003ctd data-start=\"2153\" data-end=\"2168\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"2155\" data-end=\"2167\"\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2168\" data-end=\"2202\"\u003eStainless Steel (Muffler Body)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2203\" data-end=\"2226\"\u003e\n\u003ctd data-start=\"2203\" data-end=\"2220\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"2205\" data-end=\"2219\"\u003eReversible\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2220\" data-end=\"2226\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2227\" data-end=\"2247\"\u003e\n\u003ctd data-start=\"2227\" data-end=\"2241\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"2229\" data-end=\"2240\"\u003eTunable\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2241\" data-end=\"2247\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2248\" data-end=\"2279\"\u003e\n\u003ctd data-start=\"2248\" data-end=\"2267\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"2250\" data-end=\"2266\"\u003eFitment Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2267\" data-end=\"2279\"\u003eSpecific\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2280\" data-end=\"2308\"\u003e\n\u003ctd data-start=\"2280\" data-end=\"2297\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"2282\" data-end=\"2296\"\u003eGrade Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2297\" data-end=\"2308\"\u003ePremium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003chr data-start=\"2310\" data-end=\"2313\"\u003e\n\u003ch2 data-start=\"2315\" data-end=\"2343\"\u003e\u003cstrong data-start=\"2318\" data-end=\"2343\"\u003eVehicle Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch3 data-start=\"2345\" data-end=\"2361\"\u003e\u003cstrong data-start=\"2349\" data-end=\"2361\"\u003eCadillac\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"2362\" data-end=\"2398\"\u003e\n\u003cli data-start=\"2362\" data-end=\"2398\"\u003e\n\u003cp data-start=\"2364\" data-end=\"2398\"\u003e\u003cstrong data-start=\"2364\" data-end=\"2388\"\u003eEscalade (2002–2005)\u003c\/strong\u003e — 5.3L V8\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"2400\" data-end=\"2417\"\u003e\u003cstrong data-start=\"2404\" data-end=\"2417\"\u003eChevrolet\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"2418\" data-end=\"2549\"\u003e\n\u003cli data-start=\"2418\" data-end=\"2462\"\u003e\n\u003cp data-start=\"2420\" data-end=\"2462\"\u003e\u003cstrong data-start=\"2420\" data-end=\"2450\"\u003eAvalanche 1500 (2002–2006)\u003c\/strong\u003e — 5.3L V8\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2463\" data-end=\"2506\"\u003e\n\u003cp data-start=\"2465\" data-end=\"2506\"\u003e\u003cstrong data-start=\"2465\" data-end=\"2494\"\u003eSuburban 1500 (2000–2006)\u003c\/strong\u003e — 5.3L V8\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2507\" data-end=\"2549\"\u003e\n\u003cp data-start=\"2509\" data-end=\"2549\"\u003e\u003cstrong data-start=\"2509\" data-end=\"2530\"\u003eTahoe (2000–2006)\u003c\/strong\u003e — 4.8L \/ 5.3L V8\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"2551\" data-end=\"2562\"\u003e\u003cstrong data-start=\"2555\" data-end=\"2562\"\u003eGMC\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"2563\" data-end=\"2649\"\u003e\n\u003cli data-start=\"2563\" data-end=\"2605\"\u003e\n\u003cp data-start=\"2565\" data-end=\"2605\"\u003e\u003cstrong data-start=\"2565\" data-end=\"2586\"\u003eYukon (2000–2006)\u003c\/strong\u003e — 4.8L \/ 5.3L V8\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2606\" data-end=\"2649\"\u003e\n\u003cp data-start=\"2608\" data-end=\"2649\"\u003e\u003cstrong data-start=\"2608\" data-end=\"2637\"\u003eYukon XL 1500 (2000–2006)\u003c\/strong\u003e — 5.3L V8\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2651\" data-end=\"2654\"\u003e\n\u003ch2 data-start=\"2656\" data-end=\"2683\"\u003e\u003cstrong data-start=\"2659\" data-end=\"2683\"\u003eInstallation \u0026amp; Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul data-start=\"2685\" data-end=\"3315\"\u003e\n\u003cli data-start=\"2685\" data-end=\"2776\"\u003e\n\u003cp data-start=\"2687\" data-end=\"2776\"\u003e\u003cstrong data-start=\"2687\" data-end=\"2713\"\u003eDirect-fit replacement\u003c\/strong\u003e — designed to bolt directly to factory exhaust flanges\/pipes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2777\" data-end=\"2804\"\u003e\n\u003cp data-start=\"2779\" data-end=\"2804\"\u003e\u003cstrong data-start=\"2779\" data-end=\"2802\"\u003eNo welding required\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2805\" data-end=\"2861\"\u003e\n\u003cp data-start=\"2807\" data-end=\"2861\"\u003e\u003cstrong data-start=\"2807\" data-end=\"2830\"\u003eNo hangers included\u003c\/strong\u003e — must reuse factory hangers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2862\" data-end=\"2929\"\u003e\n\u003cp data-start=\"2864\" data-end=\"2929\"\u003eConfirm inlet\/outlet pipe size (\u003cstrong data-start=\"2896\" data-end=\"2906\"\u003e2.625\"\u003c\/strong\u003e) before installation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2930\" data-end=\"2993\"\u003e\n\u003cp data-start=\"2932\" data-end=\"2993\"\u003eEnsure proper orientation: \u003cstrong data-start=\"2959\" data-end=\"2991\"\u003eoffset inlet → offset outlet\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2994\" data-end=\"3069\"\u003e\n\u003cp data-start=\"2996\" data-end=\"3069\"\u003eDesigned for \u003cstrong data-start=\"3009\" data-end=\"3027\"\u003esingle exhaust\u003c\/strong\u003e systems on GM full-size SUVs and trucks\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3070\" data-end=\"3134\"\u003e\n\u003cp data-start=\"3072\" data-end=\"3134\"\u003eNot reversible — must be installed in correct flow direction\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3135\" data-end=\"3207\"\u003e\n\u003cp data-start=\"3137\" data-end=\"3207\"\u003eProfessional installation recommended for best alignment and sealing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3208\" data-end=\"3269\"\u003e\n\u003cp data-start=\"3210\" data-end=\"3269\"\u003eCompatible with factory heat shields and clearance points\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3270\" data-end=\"3315\"\u003e\n\u003cp data-start=\"3272\" data-end=\"3315\"\u003eNot intended for dual-exhaust conversions\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"WALKER","offers":[{"title":"Default Title","offer_id":45912334991559,"sku":"WAL21423","price":149.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0665\/2277\/5751\/files\/Screenshot2025-12-02105225.png?v=1764701480","url":"https:\/\/mainstreeteshop.com\/products\/walker-exhaust-muffler-21423","provider":"MAIN STREET ESHOP","version":"1.0","type":"link"}