{"product_id":"walker-exhaust-muffler-21539","title":"WALKER - Exhaust Muffler - 21539","description":"\u003ch2 data-start=\"298\" data-end=\"320\"\u003eProduct Description\u003c\/h2\u003e\n\u003cp data-start=\"322\" data-end=\"654\"\u003eThe WALKER 21539 Quiet-Flow® SS Exhaust Muffler brings premium exhaust performance, OE-style acoustics, and long-lasting durability to Ford F-150 and Lincoln Mark LT trucks. Constructed with a \u003cstrong data-start=\"515\" data-end=\"552\"\u003e100% stainless-steel muffler body\u003c\/strong\u003e, it far outperforms aluminized mufflers with superior corrosion resistance and extended service life.\u003c\/p\u003e\n\u003cp data-start=\"656\" data-end=\"957\"\u003eOE-style hangers and pipe routing allow for a true \u003cstrong data-start=\"707\" data-end=\"743\"\u003edirect-fit, bolt-on installation\u003c\/strong\u003e, requiring no welding or custom fabrication. The Quiet-Flow® SS design integrates domed heads and louvered tubes for excellent noise reduction while maintaining strong exhaust flow for reliable engine performance.\u003c\/p\u003e\n\u003cp data-start=\"959\" data-end=\"1203\"\u003eEach unit is acoustic- and flow-tested to ensure OE-level sound quality and consistent operation. Backed by a limited lifetime warranty and Walker’s Safe and Sound® Guarantee, this muffler delivers exceptional value and long-term dependability.\u003c\/p\u003e\n\u003chr data-start=\"1205\" data-end=\"1208\"\u003e\n\u003ch2 data-start=\"1210\" data-end=\"1225\"\u003eKey Features\u003c\/h2\u003e\n\u003cul data-start=\"1227\" data-end=\"1763\"\u003e\n\u003cli data-start=\"1227\" data-end=\"1302\"\u003e\n\u003cp data-start=\"1229\" data-end=\"1302\"\u003e\u003cstrong data-start=\"1229\" data-end=\"1266\"\u003e100% Stainless-Steel Construction\u003c\/strong\u003e for superior corrosion resistance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1303\" data-end=\"1372\"\u003e\n\u003cp data-start=\"1305\" data-end=\"1372\"\u003e\u003cstrong data-start=\"1305\" data-end=\"1331\"\u003eDirect-Fit Replacement\u003c\/strong\u003e with OE-style hangers and pipe routing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1373\" data-end=\"1450\"\u003e\n\u003cp data-start=\"1375\" data-end=\"1450\"\u003e\u003cstrong data-start=\"1375\" data-end=\"1403\"\u003ePremium Acoustic Control\u003c\/strong\u003e from OE-style louvered tubes and domed heads\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1451\" data-end=\"1533\"\u003e\n\u003cp data-start=\"1453\" data-end=\"1533\"\u003e\u003cstrong data-start=\"1453\" data-end=\"1485\"\u003eReinforced Mechanical Joints\u003c\/strong\u003e and spun-locked heads for extended durability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1534\" data-end=\"1609\"\u003e\n\u003cp data-start=\"1536\" data-end=\"1609\"\u003e\u003cstrong data-start=\"1536\" data-end=\"1564\"\u003eInternal Drainage System\u003c\/strong\u003e minimizes moisture buildup to prevent rust\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1610\" data-end=\"1680\"\u003e\n\u003cp data-start=\"1612\" data-end=\"1680\"\u003e\u003cstrong data-start=\"1612\" data-end=\"1638\"\u003eFlow \u0026amp; Acoustic Tested\u003c\/strong\u003e for true OE-style sound and performance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1681\" data-end=\"1763\"\u003e\n\u003cp data-start=\"1683\" data-end=\"1763\"\u003e\u003cstrong data-start=\"1683\" data-end=\"1724\"\u003eBacked by a Limited Lifetime Warranty\u003c\/strong\u003e and 90-Day Safe and Sound® Guarantee\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1765\" data-end=\"1768\"\u003e\n\u003ch2 data-start=\"1770\" data-end=\"1797\"\u003eTechnical Specifications\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=\"1799\" data-end=\"2417\" class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead data-start=\"1799\" data-end=\"1825\"\u003e\n\u003ctr data-start=\"1799\" data-end=\"1825\"\u003e\n\u003cth data-start=\"1799\" data-end=\"1815\" data-col-size=\"sm\"\u003eSpecification\u003c\/th\u003e\n\u003cth data-start=\"1815\" data-end=\"1825\" data-col-size=\"sm\"\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody data-start=\"1852\" data-end=\"2417\"\u003e\n\u003ctr data-start=\"1852\" data-end=\"1868\"\u003e\n\u003ctd data-start=\"1852\" data-end=\"1860\" data-col-size=\"sm\"\u003eShape\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1860\" data-end=\"1868\"\u003eOval\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1869\" data-end=\"1892\"\u003e\n\u003ctd data-start=\"1869\" data-end=\"1878\" data-col-size=\"sm\"\u003eFinish\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1878\" data-end=\"1892\"\u003eAluminized\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1893\" data-end=\"1928\"\u003e\n\u003ctd data-start=\"1893\" data-end=\"1909\" data-col-size=\"sm\"\u003eBody Material\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1909\" data-end=\"1928\"\u003eStainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1929\" data-end=\"1961\"\u003e\n\u003ctd data-start=\"1929\" data-end=\"1942\" data-col-size=\"sm\"\u003eInlet Type\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1942\" data-end=\"1961\"\u003ePipe Connection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1962\" data-end=\"1995\"\u003e\n\u003ctd data-start=\"1962\" data-end=\"1976\" data-col-size=\"sm\"\u003eOutlet Type\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1976\" data-end=\"1995\"\u003ePipe Connection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1996\" data-end=\"2032\"\u003e\n\u003ctd data-start=\"1996\" data-end=\"2020\" data-col-size=\"sm\"\u003eInlet Inside Diameter\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2020\" data-end=\"2032\"\u003e2.500 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2033\" data-end=\"2070\"\u003e\n\u003ctd data-start=\"2033\" data-end=\"2058\" data-col-size=\"sm\"\u003eOutlet Inside Diameter\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2058\" data-end=\"2070\"\u003e2.500 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2071\" data-end=\"2097\"\u003e\n\u003ctd data-start=\"2071\" data-end=\"2085\" data-col-size=\"sm\"\u003eBody Height\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2085\" data-end=\"2097\"\u003e7.000 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2098\" data-end=\"2125\"\u003e\n\u003ctd data-start=\"2098\" data-end=\"2112\" data-col-size=\"sm\"\u003eBody Length\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2112\" data-end=\"2125\"\u003e28.000 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2126\" data-end=\"2151\"\u003e\n\u003ctd data-start=\"2126\" data-end=\"2139\" data-col-size=\"sm\"\u003eBody Width\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2139\" data-end=\"2151\"\u003e9.000 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2152\" data-end=\"2179\"\u003e\n\u003ctd data-start=\"2152\" data-end=\"2169\" data-col-size=\"sm\"\u003eInlet Location\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2169\" data-end=\"2179\"\u003eOffset\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2180\" data-end=\"2208\"\u003e\n\u003ctd data-start=\"2180\" data-end=\"2198\" data-col-size=\"sm\"\u003eOutlet Location\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2198\" data-end=\"2208\"\u003eOffset\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2209\" data-end=\"2231\"\u003e\n\u003ctd data-start=\"2209\" data-end=\"2226\" data-col-size=\"sm\"\u003eInlet Quantity\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2226\" data-end=\"2231\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2232\" data-end=\"2255\"\u003e\n\u003ctd data-start=\"2232\" data-end=\"2250\" data-col-size=\"sm\"\u003eOutlet Quantity\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2250\" data-end=\"2255\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2256\" data-end=\"2283\"\u003e\n\u003ctd data-start=\"2256\" data-end=\"2271\" data-col-size=\"sm\"\u003eInlet Offset\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2271\" data-end=\"2283\"\u003e1.625 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2284\" data-end=\"2314\"\u003e\n\u003ctd data-start=\"2284\" data-end=\"2301\" data-col-size=\"sm\"\u003eOverall Length\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2301\" data-end=\"2314\"\u003e32.000 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2315\" data-end=\"2334\"\u003e\n\u003ctd data-start=\"2315\" data-end=\"2328\" data-col-size=\"sm\"\u003eReversible\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2328\" data-end=\"2334\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2335\" data-end=\"2351\"\u003e\n\u003ctd data-start=\"2335\" data-end=\"2345\" data-col-size=\"sm\"\u003eTunable\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2345\" data-end=\"2351\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2352\" data-end=\"2376\"\u003e\n\u003ctd data-start=\"2352\" data-end=\"2365\" data-col-size=\"sm\"\u003eGrade Type\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2365\" data-end=\"2376\"\u003ePremium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2377\" data-end=\"2417\"\u003e\n\u003ctd data-start=\"2377\" data-end=\"2405\" data-col-size=\"sm\"\u003eUniversal or Specific Fit\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2405\" data-end=\"2417\"\u003eSpecific\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=\"2419\" data-end=\"2422\"\u003e\n\u003ch2 data-start=\"2424\" data-end=\"2448\"\u003eVehicle Compatibility\u003c\/h2\u003e\n\u003ch3 data-start=\"2450\" data-end=\"2462\"\u003e\u003cstrong data-start=\"2454\" data-end=\"2462\"\u003eFord\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ch4 data-start=\"2464\" data-end=\"2478\"\u003e\u003cstrong data-start=\"2469\" data-end=\"2478\"\u003eF-150\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul data-start=\"2479\" data-end=\"2637\"\u003e\n\u003cli data-start=\"2479\" data-end=\"2531\"\u003e\n\u003cp data-start=\"2481\" data-end=\"2496\"\u003e\u003cstrong data-start=\"2481\" data-end=\"2494\"\u003e2004–2008\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"2499\" data-end=\"2531\"\u003e\n\u003cli data-start=\"2499\" data-end=\"2518\"\u003e\n\u003cp data-start=\"2501\" data-end=\"2518\"\u003e4.6L V8 281 cid\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2521\" data-end=\"2531\"\u003e\n\u003cp data-start=\"2523\" data-end=\"2531\"\u003eQty: 1\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2532\" data-end=\"2584\"\u003e\n\u003cp data-start=\"2534\" data-end=\"2549\"\u003e\u003cstrong data-start=\"2534\" data-end=\"2547\"\u003e2005–2008\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"2552\" data-end=\"2584\"\u003e\n\u003cli data-start=\"2552\" data-end=\"2571\"\u003e\n\u003cp data-start=\"2554\" data-end=\"2571\"\u003e4.2L V6 256 cid\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2574\" data-end=\"2584\"\u003e\n\u003cp data-start=\"2576\" data-end=\"2584\"\u003eQty: 1\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2585\" data-end=\"2637\"\u003e\n\u003cp data-start=\"2587\" data-end=\"2602\"\u003e\u003cstrong data-start=\"2587\" data-end=\"2600\"\u003e2004–2008\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"2605\" data-end=\"2637\"\u003e\n\u003cli data-start=\"2605\" data-end=\"2624\"\u003e\n\u003cp data-start=\"2607\" data-end=\"2624\"\u003e5.4L V8 330 cid\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2627\" data-end=\"2637\"\u003e\n\u003cp data-start=\"2629\" data-end=\"2637\"\u003eQty: 1\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"2639\" data-end=\"2654\"\u003e\u003cstrong data-start=\"2643\" data-end=\"2654\"\u003eLincoln\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ch4 data-start=\"2656\" data-end=\"2672\"\u003e\u003cstrong data-start=\"2661\" data-end=\"2672\"\u003eMark LT\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul data-start=\"2673\" data-end=\"2725\"\u003e\n\u003cli data-start=\"2673\" data-end=\"2725\"\u003e\n\u003cp data-start=\"2675\" data-end=\"2690\"\u003e\u003cstrong data-start=\"2675\" data-end=\"2688\"\u003e2006–2008\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"2693\" data-end=\"2725\"\u003e\n\u003cli data-start=\"2693\" data-end=\"2712\"\u003e\n\u003cp data-start=\"2695\" data-end=\"2712\"\u003e5.4L V8 330 cid\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2715\" data-end=\"2725\"\u003e\n\u003cp data-start=\"2717\" data-end=\"2725\"\u003eQty: 1\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2727\" data-end=\"2730\"\u003e\n\u003ch2 data-start=\"2732\" data-end=\"2764\"\u003eInstallation \u0026amp; Warranty Notes\u003c\/h2\u003e\n\u003cul data-start=\"2766\" data-end=\"3019\"\u003e\n\u003cli data-start=\"2766\" data-end=\"2824\"\u003e\n\u003cp data-start=\"2768\" data-end=\"2824\"\u003eDirect-fit installation—no cutting or welding required\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2825\" data-end=\"2902\"\u003e\n\u003cp data-start=\"2827\" data-end=\"2902\"\u003eStainless-steel body delivers maximum durability and corrosion resistance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2903\" data-end=\"2963\"\u003e\n\u003cp data-start=\"2905\" data-end=\"2963\"\u003eEngineered for OE-style noise reduction and exhaust flow\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2964\" data-end=\"3019\"\u003e\n\u003cp data-start=\"2966\" data-end=\"3019\"\u003eProtected by Walker’s \u003cstrong data-start=\"2988\" data-end=\"3017\"\u003elimited lifetime warranty\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"WALKER","offers":[{"title":"Default Title","offer_id":45875179782343,"sku":"WAL21539","price":186.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0665\/2277\/5751\/files\/Screenshot2025-11-24110603.png?v=1764011105","url":"https:\/\/mainstreeteshop.com\/products\/walker-exhaust-muffler-21539","provider":"MAIN STREET ESHOP","version":"1.0","type":"link"}