{"product_id":"walker-exhaust-muffler-18104","title":"WALKER - Exhaust Muffler - 18104","description":"\u003ch2 data-start=\"407\" data-end=\"433\"\u003e\u003cstrong data-start=\"410\" data-end=\"433\"\u003eProduct Description\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-start=\"435\" data-end=\"792\"\u003eThe Walker SoundFX® \u003cstrong data-start=\"455\" data-end=\"464\"\u003e18104\u003c\/strong\u003e universal muffler is engineered to deliver long-lasting performance, a clean appearance, and balanced acoustics for a wide range of older GM and domestic applications. Featuring durable aluminized steel and mechanical interior joints, this muffler withstands heat cycles and corrosion better than low-carbon steel alternatives.\u003c\/p\u003e\n\u003cp data-start=\"794\" data-end=\"996\"\u003eWith expandable bushings and a universal-fit design, the 18104 allows flexible installation for custom exhaust work. Ideal for restorations, repairs, and retrofits requiring factory-style sound quality.\u003c\/p\u003e\n\u003chr data-start=\"998\" data-end=\"1001\"\u003e\n\u003ch2 data-start=\"1003\" data-end=\"1022\"\u003e\u003cstrong data-start=\"1006\" data-end=\"1022\"\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul data-start=\"1024\" data-end=\"1518\"\u003e\n\u003cli data-start=\"1024\" data-end=\"1094\"\u003e\n\u003cp data-start=\"1026\" data-end=\"1094\"\u003e\u003cstrong data-start=\"1026\" data-end=\"1066\"\u003eCorrosion-Resistant Aluminized Steel\u003c\/strong\u003e for extended service life\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1095\" data-end=\"1171\"\u003e\n\u003cp data-start=\"1097\" data-end=\"1171\"\u003e\u003cstrong data-start=\"1097\" data-end=\"1125\"\u003eInternal Drainage System\u003c\/strong\u003e that reduces moisture and corrosion buildup\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1172\" data-end=\"1242\"\u003e\n\u003cp data-start=\"1174\" data-end=\"1242\"\u003e\u003cstrong data-start=\"1174\" data-end=\"1203\"\u003eDurable Mechanical Joints\u003c\/strong\u003e designed to handle thermal expansion\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1243\" data-end=\"1324\"\u003e\n\u003cp data-start=\"1245\" data-end=\"1324\"\u003e\u003cstrong data-start=\"1245\" data-end=\"1266\"\u003eUniversal Fitment\u003c\/strong\u003e with expandable bushings for custom exhaust fabrication\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1325\" data-end=\"1397\"\u003e\n\u003cp data-start=\"1327\" data-end=\"1397\"\u003e\u003cstrong data-start=\"1327\" data-end=\"1354\"\u003eOE-Style Louvered Tubes\u003c\/strong\u003e deliver original-equipment sound quality\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1398\" data-end=\"1461\"\u003e\n\u003cp data-start=\"1400\" data-end=\"1461\"\u003e\u003cstrong data-start=\"1400\" data-end=\"1434\"\u003eSpun-Locked Heads \u0026amp; Spot Welds\u003c\/strong\u003e for structural integrity\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1462\" data-end=\"1518\"\u003e\n\u003cp data-start=\"1464\" data-end=\"1518\"\u003e\u003cstrong data-start=\"1464\" data-end=\"1486\"\u003eTested \u0026amp; Validated\u003c\/strong\u003e for performance and longevity\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1520\" data-end=\"1523\"\u003e\n\u003ch2 data-start=\"1525\" data-end=\"1556\"\u003e\u003cstrong data-start=\"1528\" data-end=\"1556\"\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=\"1558\" data-end=\"2309\" class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead data-start=\"1558\" data-end=\"1591\"\u003e\n\u003ctr data-start=\"1558\" data-end=\"1591\"\u003e\n\u003cth data-start=\"1558\" data-end=\"1578\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1560\" data-end=\"1577\"\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth data-start=\"1578\" data-end=\"1591\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1580\" data-end=\"1589\"\u003eValue\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody data-start=\"1625\" data-end=\"2309\"\u003e\n\u003ctr data-start=\"1625\" data-end=\"1645\"\u003e\n\u003ctd data-start=\"1625\" data-end=\"1637\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1627\" data-end=\"1636\"\u003eShape\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1637\" data-end=\"1645\"\u003eOval\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1646\" data-end=\"1673\"\u003e\n\u003ctd data-start=\"1646\" data-end=\"1659\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1648\" data-end=\"1658\"\u003eFinish\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1659\" data-end=\"1673\"\u003eAluminized\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1674\" data-end=\"1710\"\u003e\n\u003ctd data-start=\"1674\" data-end=\"1691\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1676\" data-end=\"1690\"\u003eInlet Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1691\" data-end=\"1710\"\u003ePipe Connection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1711\" data-end=\"1748\"\u003e\n\u003ctd data-start=\"1711\" data-end=\"1729\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1713\" data-end=\"1728\"\u003eOutlet Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1729\" data-end=\"1748\"\u003ePipe Connection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1749\" data-end=\"1789\"\u003e\n\u003ctd data-start=\"1749\" data-end=\"1777\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1751\" data-end=\"1776\"\u003eInlet Inside Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1777\" data-end=\"1789\"\u003e2.250 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1790\" data-end=\"1831\"\u003e\n\u003ctd data-start=\"1790\" data-end=\"1819\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1792\" data-end=\"1818\"\u003eOutlet Inside Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1819\" data-end=\"1831\"\u003e2.000 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1832\" data-end=\"1862\"\u003e\n\u003ctd data-start=\"1832\" data-end=\"1850\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1834\" data-end=\"1849\"\u003eBody Height\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1850\" data-end=\"1862\"\u003e4.250 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1863\" data-end=\"1894\"\u003e\n\u003ctd data-start=\"1863\" data-end=\"1881\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1865\" data-end=\"1880\"\u003eBody Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1881\" data-end=\"1894\"\u003e20.000 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1895\" data-end=\"1924\"\u003e\n\u003ctd data-start=\"1895\" data-end=\"1912\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1897\" data-end=\"1911\"\u003eBody Width\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1912\" data-end=\"1924\"\u003e8.813 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1925\" data-end=\"1959\"\u003e\n\u003ctd data-start=\"1925\" data-end=\"1946\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1927\" data-end=\"1945\"\u003eOverall Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1946\" data-end=\"1959\"\u003e28.000 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1960\" data-end=\"1991\"\u003e\n\u003ctd data-start=\"1960\" data-end=\"1981\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1962\" data-end=\"1980\"\u003eInlet Location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1981\" data-end=\"1991\"\u003eOffset\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1992\" data-end=\"2024\"\u003e\n\u003ctd data-start=\"1992\" data-end=\"2014\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1994\" data-end=\"2013\"\u003eOutlet Location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2014\" data-end=\"2024\"\u003eOffset\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2025\" data-end=\"2051\"\u003e\n\u003ctd data-start=\"2025\" data-end=\"2046\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"2027\" data-end=\"2045\"\u003eInlet Quantity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2046\" data-end=\"2051\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2052\" data-end=\"2079\"\u003e\n\u003ctd data-start=\"2052\" data-end=\"2074\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"2054\" data-end=\"2073\"\u003eOutlet Quantity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2074\" data-end=\"2079\"\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2080\" data-end=\"2108\"\u003e\n\u003ctd data-start=\"2080\" data-end=\"2102\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"2082\" data-end=\"2101\"\u003eHanger Included\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2102\" data-end=\"2108\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2109\" data-end=\"2132\"\u003e\n\u003ctd data-start=\"2109\" data-end=\"2126\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"2111\" data-end=\"2125\"\u003eReversible\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2126\" data-end=\"2132\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2133\" data-end=\"2165\"\u003e\n\u003ctd data-start=\"2133\" data-end=\"2152\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"2135\" data-end=\"2151\"\u003eFitment Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2152\" data-end=\"2165\"\u003eUniversal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2166\" data-end=\"2195\"\u003e\n\u003ctd data-start=\"2166\" data-end=\"2186\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"2168\" data-end=\"2185\"\u003eBody Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2186\" data-end=\"2195\"\u003eSteel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2196\" data-end=\"2224\"\u003e\n\u003ctd data-start=\"2196\" data-end=\"2213\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"2198\" data-end=\"2212\"\u003eGrade Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2213\" data-end=\"2224\"\u003ePremium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2225\" data-end=\"2277\"\u003e\n\u003ctd data-start=\"2225\" data-end=\"2248\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"2227\" data-end=\"2247\"\u003ePart Description\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2248\" data-end=\"2277\"\u003eSoundFX Universal Muffler\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2278\" data-end=\"2309\"\u003e\n\u003ctd data-start=\"2278\" data-end=\"2297\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"2280\" data-end=\"2296\"\u003eInlet Offset\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2297\" data-end=\"2309\"\u003e2.625 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=\"2311\" data-end=\"2314\"\u003e\n\u003ch2 data-start=\"2316\" data-end=\"2346\"\u003e\u003cstrong data-start=\"2319\" data-end=\"2344\"\u003eVehicle Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-start=\"2347\" data-end=\"2418\"\u003e(\u003cem data-start=\"2348\" data-end=\"2417\"\u003eUniversal Part — Listed Vehicles Are Examples Of Known Applications\u003c\/em\u003e)\u003c\/p\u003e\n\u003ch3 data-start=\"2420\" data-end=\"2433\"\u003e\u003cstrong data-start=\"2424\" data-end=\"2433\"\u003eBuick\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"2434\" data-end=\"2506\"\u003e\n\u003cli data-start=\"2434\" data-end=\"2465\"\u003e\n\u003cp data-start=\"2436\" data-end=\"2465\"\u003eApollo (1975) — 5.7L V8 350\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2466\" data-end=\"2506\"\u003e\n\u003cp data-start=\"2468\" data-end=\"2506\"\u003eSkylark (1975–1979) — 5.0L \/ 5.7L V8\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"2508\" data-end=\"2525\"\u003e\u003cstrong data-start=\"2512\" data-end=\"2525\"\u003eChevrolet\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"2526\" data-end=\"2643\"\u003e\n\u003cli data-start=\"2526\" data-end=\"2594\"\u003e\n\u003cp data-start=\"2528\" data-end=\"2594\"\u003eCamaro (1975–1992) — 2.8L V6, 3.1L V6, 4.4L V8, 5.0L V8, 5.7L V8\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2595\" data-end=\"2643\"\u003e\n\u003cp data-start=\"2597\" data-end=\"2643\"\u003eNova (1975–1979) — 4.3L V8, 5.0L V8, 5.7L V8\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"2645\" data-end=\"2663\"\u003e\u003cstrong data-start=\"2649\" data-end=\"2663\"\u003eOldsmobile\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"2664\" data-end=\"2702\"\u003e\n\u003cli data-start=\"2664\" data-end=\"2702\"\u003e\n\u003cp data-start=\"2666\" data-end=\"2702\"\u003eOmega (1975–1979) — 5.0L \u0026amp; 5.7L V8\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"2704\" data-end=\"2719\"\u003e\u003cstrong data-start=\"2708\" data-end=\"2719\"\u003ePontiac\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"2720\" data-end=\"2863\"\u003e\n\u003cli data-start=\"2720\" data-end=\"2781\"\u003e\n\u003cp data-start=\"2722\" data-end=\"2781\"\u003eFirebird (1977–1992) — 2.8L V6, 3.1L V6, 5.0L V8, 5.7L V8\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2782\" data-end=\"2822\"\u003e\n\u003cp data-start=\"2784\" data-end=\"2822\"\u003ePhoenix (1977–1979) — 5.0L \/ 5.7L V8\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2823\" data-end=\"2863\"\u003e\n\u003cp data-start=\"2825\" data-end=\"2863\"\u003eVentura (1975–1977) — 5.0L \/ 5.7L V8\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2865\" data-end=\"2868\"\u003e\n\u003ch2 data-start=\"2870\" data-end=\"2897\"\u003e\u003cstrong data-start=\"2873\" data-end=\"2897\"\u003eInstallation \u0026amp; Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul data-start=\"2899\" data-end=\"3524\"\u003e\n\u003cli data-start=\"2899\" data-end=\"2962\"\u003e\n\u003cp data-start=\"2901\" data-end=\"2962\"\u003e\u003cstrong data-start=\"2901\" data-end=\"2919\"\u003eUniversal part\u003c\/strong\u003e — fabrication or welding \u003cstrong data-start=\"2945\" data-end=\"2960\"\u003eis required\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2963\" data-end=\"3025\"\u003e\n\u003cp data-start=\"2965\" data-end=\"3025\"\u003eDesigned with \u003cstrong data-start=\"2979\" data-end=\"3002\"\u003eexpandable bushings\u003c\/strong\u003e for flexible fitment\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3026\" data-end=\"3090\"\u003e\n\u003cp data-start=\"3028\" data-end=\"3090\"\u003eEnsure proper alignment of \u003cstrong data-start=\"3055\" data-end=\"3088\"\u003eoffset inlet and dual outlets\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3091\" data-end=\"3159\"\u003e\n\u003cp data-start=\"3093\" data-end=\"3159\"\u003eNo hangers included — install new hangers or adapt existing ones\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3160\" data-end=\"3246\"\u003e\n\u003cp data-start=\"3162\" data-end=\"3246\"\u003eRecommended for custom exhaust systems, classic vehicle restoration, and retrofits\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3247\" data-end=\"3314\"\u003e\n\u003cp data-start=\"3249\" data-end=\"3314\"\u003eMust verify available space and orientation before installation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3315\" data-end=\"3379\"\u003e\n\u003cp data-start=\"3317\" data-end=\"3379\"\u003eNot reversible — install with offset orientation as designed\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3380\" data-end=\"3455\"\u003e\n\u003cp data-start=\"3382\" data-end=\"3455\"\u003eProfessional installation strongly recommended due to universal fitment\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3456\" data-end=\"3524\"\u003e\n\u003cp data-start=\"3458\" data-end=\"3524\"\u003eCheck clearance around suspension, body panels, and heat shields\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"WALKER","offers":[{"title":"Default Title","offer_id":45912321654983,"sku":"WAL18104","price":75.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0665\/2277\/5751\/files\/Screenshot2025-12-02104225.png?v=1764700881","url":"https:\/\/mainstreeteshop.com\/products\/walker-exhaust-muffler-18104","provider":"MAIN STREET ESHOP","version":"1.0","type":"link"}