{"product_id":"walker-exhaust-muffler-18977","title":"WALKER - Exhaust Muffler - 18977","description":"\u003ch2 data-start=\"337\" data-end=\"363\"\u003e\u003cstrong data-start=\"340\" data-end=\"363\"\u003eProduct Description\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-start=\"365\" data-end=\"756\"\u003eThe Walker® SoundFX® \u003cstrong data-start=\"386\" data-end=\"395\"\u003e18977\u003c\/strong\u003e direct-fit exhaust muffler is engineered to deliver OE-style performance, appearance, and sound for Ford F-150 and Lincoln Mark LT trucks. Built with \u003cstrong data-start=\"546\" data-end=\"571\"\u003e100% aluminized steel\u003c\/strong\u003e, it offers improved corrosion resistance compared to low-carbon steel and uses Walker’s proven internal louvered tube technology to reduce radiated noise for factory-quality acoustics.\u003c\/p\u003e\n\u003cp data-start=\"758\" data-end=\"929\"\u003eMechanical interior joints, reinforced heads, and OE-style mounting points provide strength and longevity, ensuring a long service life even under tough truck duty cycles.\u003c\/p\u003e\n\u003chr data-start=\"931\" data-end=\"934\"\u003e\n\u003ch2 data-start=\"936\" data-end=\"955\"\u003e\u003cstrong data-start=\"939\" data-end=\"955\"\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul data-start=\"957\" data-end=\"1379\"\u003e\n\u003cli data-start=\"957\" data-end=\"1030\"\u003e\n\u003cp data-start=\"959\" data-end=\"1030\"\u003e\u003cstrong data-start=\"959\" data-end=\"999\"\u003eCorrosion-Resistant Aluminized Steel\u003c\/strong\u003e construction for longer life\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1031\" data-end=\"1095\"\u003e\n\u003cp data-start=\"1033\" data-end=\"1095\"\u003e\u003cstrong data-start=\"1033\" data-end=\"1054\"\u003eDirect-Fit Design\u003c\/strong\u003e with OE-style hangers and pipe routing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1096\" data-end=\"1175\"\u003e\n\u003cp data-start=\"1098\" data-end=\"1175\"\u003e\u003cstrong data-start=\"1098\" data-end=\"1122\"\u003eFactory-Style Sound:\u003c\/strong\u003e Louvered tubes reduce noise vs. perforated designs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1176\" data-end=\"1252\"\u003e\n\u003cp data-start=\"1178\" data-end=\"1252\"\u003e\u003cstrong data-start=\"1178\" data-end=\"1196\"\u003eBuilt to Last:\u003c\/strong\u003e Mechanical joints allow for expansion and contraction\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1253\" data-end=\"1330\"\u003e\n\u003cp data-start=\"1255\" data-end=\"1330\"\u003e\u003cstrong data-start=\"1255\" data-end=\"1280\"\u003eReliable Performance:\u003c\/strong\u003e Spun-locked heads maintain structural integrity\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1331\" data-end=\"1379\"\u003e\n\u003cp data-start=\"1333\" data-end=\"1379\"\u003e\u003cstrong data-start=\"1333\" data-end=\"1354\"\u003eDesigned \u0026amp; tested\u003c\/strong\u003e to extend muffler life\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1381\" data-end=\"1384\"\u003e\n\u003ch2 data-start=\"1386\" data-end=\"1417\"\u003e\u003cstrong data-start=\"1389\" data-end=\"1417\"\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=\"1419\" data-end=\"2074\" class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead data-start=\"1419\" data-end=\"1445\"\u003e\n\u003ctr data-start=\"1419\" data-end=\"1445\"\u003e\n\u003cth data-start=\"1419\" data-end=\"1435\" data-col-size=\"sm\"\u003eSpecification\u003c\/th\u003e\n\u003cth data-start=\"1435\" data-end=\"1445\" data-col-size=\"sm\"\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody data-start=\"1472\" data-end=\"2074\"\u003e\n\u003ctr data-start=\"1472\" data-end=\"1492\"\u003e\n\u003ctd data-start=\"1472\" data-end=\"1484\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1474\" data-end=\"1483\"\u003eShape\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1484\" data-end=\"1492\"\u003eOval\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1493\" data-end=\"1520\"\u003e\n\u003ctd data-start=\"1493\" data-end=\"1506\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1495\" data-end=\"1505\"\u003eFinish\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1506\" data-end=\"1520\"\u003eAluminized\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1521\" data-end=\"1557\"\u003e\n\u003ctd data-start=\"1521\" data-end=\"1538\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1523\" data-end=\"1537\"\u003eInlet Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1538\" data-end=\"1557\"\u003ePipe Connection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1558\" data-end=\"1595\"\u003e\n\u003ctd data-start=\"1558\" data-end=\"1576\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1560\" data-end=\"1575\"\u003eOutlet Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1576\" data-end=\"1595\"\u003ePipe Connection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1596\" data-end=\"1636\"\u003e\n\u003ctd data-start=\"1596\" data-end=\"1624\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1598\" data-end=\"1623\"\u003eInlet Inside Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1624\" data-end=\"1636\"\u003e2.500 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1637\" data-end=\"1667\"\u003e\n\u003ctd data-start=\"1637\" data-end=\"1655\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1639\" data-end=\"1654\"\u003eBody Height\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1655\" data-end=\"1667\"\u003e7.000 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1668\" data-end=\"1699\"\u003e\n\u003ctd data-start=\"1668\" data-end=\"1686\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1670\" data-end=\"1685\"\u003eBody Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1686\" data-end=\"1699\"\u003e28.000 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1700\" data-end=\"1729\"\u003e\n\u003ctd data-start=\"1700\" data-end=\"1717\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1702\" data-end=\"1716\"\u003eBody Width\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1717\" data-end=\"1729\"\u003e9.000 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1730\" data-end=\"1764\"\u003e\n\u003ctd data-start=\"1730\" data-end=\"1751\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1732\" data-end=\"1750\"\u003eOverall Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1751\" data-end=\"1764\"\u003e32.000 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1765\" data-end=\"1796\"\u003e\n\u003ctd data-start=\"1765\" data-end=\"1786\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1767\" data-end=\"1785\"\u003eInlet Location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1786\" data-end=\"1796\"\u003eOffset\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1797\" data-end=\"1829\"\u003e\n\u003ctd data-start=\"1797\" data-end=\"1819\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1799\" data-end=\"1818\"\u003eOutlet Location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1819\" data-end=\"1829\"\u003eOffset\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1830\" data-end=\"1856\"\u003e\n\u003ctd data-start=\"1830\" data-end=\"1851\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1832\" data-end=\"1850\"\u003eInlet Quantity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1851\" data-end=\"1856\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1857\" data-end=\"1884\"\u003e\n\u003ctd data-start=\"1857\" data-end=\"1879\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1859\" data-end=\"1878\"\u003eOutlet Quantity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1879\" data-end=\"1884\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1885\" data-end=\"1914\"\u003e\n\u003ctd data-start=\"1885\" data-end=\"1905\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1887\" data-end=\"1904\"\u003eBody Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1905\" data-end=\"1914\"\u003eSteel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1915\" data-end=\"1944\"\u003e\n\u003ctd data-start=\"1915\" data-end=\"1937\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1917\" data-end=\"1936\"\u003eHanger Included\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1937\" data-end=\"1944\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1945\" data-end=\"1968\"\u003e\n\u003ctd data-start=\"1945\" data-end=\"1962\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1947\" data-end=\"1961\"\u003eReversible\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1962\" data-end=\"1968\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1969\" data-end=\"2013\"\u003e\n\u003ctd data-start=\"1969\" data-end=\"2001\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1971\" data-end=\"2000\"\u003eUniversal or Specific Fit\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2001\" data-end=\"2013\"\u003eSpecific\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2014\" data-end=\"2042\"\u003e\n\u003ctd data-start=\"2014\" data-end=\"2031\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"2016\" data-end=\"2030\"\u003eGrade Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2031\" data-end=\"2042\"\u003ePremium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2043\" data-end=\"2074\"\u003e\n\u003ctd data-start=\"2043\" data-end=\"2062\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"2045\" data-end=\"2061\"\u003eInlet Offset\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2062\" data-end=\"2074\"\u003e1.625 in\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=\"2076\" data-end=\"2079\"\u003e\n\u003ch2 data-start=\"2081\" data-end=\"2109\"\u003e\u003cstrong data-start=\"2084\" data-end=\"2109\"\u003eVehicle Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch3 data-start=\"2111\" data-end=\"2123\"\u003e\u003cstrong data-start=\"2115\" data-end=\"2123\"\u003eFord\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"2124\" data-end=\"2257\"\u003e\n\u003cli data-start=\"2124\" data-end=\"2257\"\u003e\n\u003cp data-start=\"2126\" data-end=\"2149\"\u003e\u003cstrong data-start=\"2126\" data-end=\"2147\"\u003eF-150 (2004–2008)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"2152\" data-end=\"2257\"\u003e\n\u003cli data-start=\"2152\" data-end=\"2173\"\u003e\n\u003cp data-start=\"2154\" data-end=\"2173\"\u003e4.2L V6 (256 cid)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2176\" data-end=\"2197\"\u003e\n\u003cp data-start=\"2178\" data-end=\"2197\"\u003e4.6L V8 (281 cid)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2200\" data-end=\"2221\"\u003e\n\u003cp data-start=\"2202\" data-end=\"2221\"\u003e5.4L V8 (330 cid)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2224\" data-end=\"2257\"\u003e\n\u003cp data-start=\"2226\" data-end=\"2257\"\u003eAlso fits 4WD models w\/ 4.6L V8\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"2259\" data-end=\"2274\"\u003e\u003cstrong data-start=\"2263\" data-end=\"2274\"\u003eLincoln\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"2275\" data-end=\"2324\"\u003e\n\u003cli data-start=\"2275\" data-end=\"2324\"\u003e\n\u003cp data-start=\"2277\" data-end=\"2302\"\u003e\u003cstrong data-start=\"2277\" data-end=\"2300\"\u003eMark LT (2006–2008)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"2305\" data-end=\"2324\"\u003e\n\u003cli data-start=\"2305\" data-end=\"2324\"\u003e\n\u003cp data-start=\"2307\" data-end=\"2324\"\u003e5.4L V8 (330 cid)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2326\" data-end=\"2329\"\u003e\n\u003ch2 data-start=\"2331\" data-end=\"2358\"\u003e\u003cstrong data-start=\"2334\" data-end=\"2358\"\u003eInstallation \u0026amp; Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul data-start=\"2360\" data-end=\"2826\"\u003e\n\u003cli data-start=\"2360\" data-end=\"2439\"\u003e\n\u003cp data-start=\"2362\" data-end=\"2439\"\u003e\u003cstrong data-start=\"2362\" data-end=\"2393\"\u003eDirect bolt-on installation\u003c\/strong\u003e using OE-style hangers; no welding required\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2440\" data-end=\"2508\"\u003e\n\u003cp data-start=\"2442\" data-end=\"2508\"\u003e\u003cstrong data-start=\"2442\" data-end=\"2461\"\u003eNon-reversible:\u003c\/strong\u003e Must be installed in the correct orientation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2509\" data-end=\"2582\"\u003e\n\u003cp data-start=\"2511\" data-end=\"2582\"\u003e\u003cstrong data-start=\"2511\" data-end=\"2543\"\u003eDesigned for factory piping:\u003c\/strong\u003e Ensure inlet size matches OEM system\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2583\" data-end=\"2652\"\u003e\n\u003cp data-start=\"2585\" data-end=\"2652\"\u003e\u003cstrong data-start=\"2585\" data-end=\"2615\"\u003eReplace old clamps\/gaskets\u003c\/strong\u003e as needed to ensure proper sealing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2653\" data-end=\"2734\"\u003e\n\u003cp data-start=\"2655\" data-end=\"2734\"\u003e\u003cstrong data-start=\"2655\" data-end=\"2696\"\u003eProfessional installation recommended\u003c\/strong\u003e for optimal alignment and longevity\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2735\" data-end=\"2826\"\u003e\n\u003cp data-start=\"2737\" data-end=\"2826\"\u003e\u003cstrong data-start=\"2737\" data-end=\"2800\"\u003eNot compatible with modified or aftermarket exhaust systems\u003c\/strong\u003e unless dimensions match\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"WALKER","offers":[{"title":"Default Title","offer_id":45882491404487,"sku":"WAL18977","price":136.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0665\/2277\/5751\/files\/Screenshot2025-11-24165517.png?v=1764032056","url":"https:\/\/mainstreeteshop.com\/products\/walker-exhaust-muffler-18977","provider":"MAIN STREET ESHOP","version":"1.0","type":"link"}