{"product_id":"walker-exhaust-muffler-21904","title":"WALKER - Exhaust Muffler - 21904","description":"\u003ch2 data-start=\"368\" data-end=\"394\"\u003e\u003cstrong data-start=\"371\" data-end=\"394\"\u003eProduct Description\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-start=\"396\" data-end=\"738\"\u003eThe Walker® Quiet-Flow® SS \u003cstrong data-start=\"423\" data-end=\"432\"\u003e21904\u003c\/strong\u003e muffler is engineered with \u003cstrong data-start=\"460\" data-end=\"497\"\u003e100% stainless-steel construction\u003c\/strong\u003e, ensuring exceptional durability and corrosion resistance compared to aluminized alternatives. With OE-style hangers and pipe routing, this muffler installs easily and delivers the same smooth, controlled exhaust tone as the factory system.\u003c\/p\u003e\n\u003cp data-start=\"740\" data-end=\"1031\"\u003eInternally, mechanically joined tubes, louvered sound-control channels, and domed heads help minimize distortion, reduce radiated noise, and provide premium acoustic performance. Designed specifically for Subaru applications, this unit offers long-lasting reliability and OE-correct fitment.\u003c\/p\u003e\n\u003chr data-start=\"1033\" data-end=\"1036\"\u003e\n\u003ch2 data-start=\"1038\" data-end=\"1057\"\u003e\u003cstrong data-start=\"1041\" data-end=\"1057\"\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul data-start=\"1059\" data-end=\"1471\"\u003e\n\u003cli data-start=\"1059\" data-end=\"1133\"\u003e\n\u003cp data-start=\"1061\" data-end=\"1133\"\u003e\u003cstrong data-start=\"1061\" data-end=\"1098\"\u003e100% Stainless-Steel Construction\u003c\/strong\u003e for maximum corrosion protection\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1134\" data-end=\"1201\"\u003e\n\u003cp data-start=\"1136\" data-end=\"1201\"\u003e\u003cstrong data-start=\"1136\" data-end=\"1157\"\u003eDirect-Fit Design\u003c\/strong\u003e – OE-style hangers, brackets, and routing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1202\" data-end=\"1270\"\u003e\n\u003cp data-start=\"1204\" data-end=\"1270\"\u003e\u003cstrong data-start=\"1204\" data-end=\"1229\"\u003ePremium Sound Control\u003c\/strong\u003e – Louvered tubes reduce radiated noise\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1271\" data-end=\"1357\"\u003e\n\u003cp data-start=\"1273\" data-end=\"1357\"\u003e\u003cstrong data-start=\"1273\" data-end=\"1308\"\u003eDurable Mechanical Construction\u003c\/strong\u003e – Handles thermal expansion without distortion\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1358\" data-end=\"1418\"\u003e\n\u003cp data-start=\"1360\" data-end=\"1418\"\u003e\u003cstrong data-start=\"1360\" data-end=\"1383\"\u003eFlow \u0026amp; Sound Tested\u003c\/strong\u003e – Ensures OE-quality performance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1419\" data-end=\"1471\"\u003e\n\u003cp data-start=\"1421\" data-end=\"1471\"\u003e\u003cstrong data-start=\"1421\" data-end=\"1469\"\u003eBacked by Walker’s Limited Lifetime Warranty\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1473\" data-end=\"1476\"\u003e\n\u003ch2 data-start=\"1478\" data-end=\"1509\"\u003e\u003cstrong data-start=\"1481\" data-end=\"1509\"\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=\"1511\" data-end=\"2198\" class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead data-start=\"1511\" data-end=\"1537\"\u003e\n\u003ctr data-start=\"1511\" data-end=\"1537\"\u003e\n\u003cth data-start=\"1511\" data-end=\"1527\" data-col-size=\"sm\"\u003eSpecification\u003c\/th\u003e\n\u003cth data-start=\"1527\" data-end=\"1537\" data-col-size=\"sm\"\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody data-start=\"1564\" data-end=\"2198\"\u003e\n\u003ctr data-start=\"1564\" data-end=\"1584\"\u003e\n\u003ctd data-start=\"1564\" data-end=\"1576\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1566\" data-end=\"1575\"\u003eShape\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1576\" data-end=\"1584\"\u003eOval\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1585\" data-end=\"1609\"\u003e\n\u003ctd data-start=\"1585\" data-end=\"1598\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1587\" data-end=\"1597\"\u003eFinish\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1598\" data-end=\"1609\"\u003eNatural\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1610\" data-end=\"1651\"\u003e\n\u003ctd data-start=\"1610\" data-end=\"1627\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1612\" data-end=\"1626\"\u003eInlet Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1627\" data-end=\"1651\"\u003e2 Bolt Welded Flange\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1652\" data-end=\"1677\"\u003e\n\u003ctd data-start=\"1652\" data-end=\"1670\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1654\" data-end=\"1669\"\u003eOutlet Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1670\" data-end=\"1677\"\u003eTip\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1678\" data-end=\"1708\"\u003e\n\u003ctd data-start=\"1678\" data-end=\"1696\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1680\" data-end=\"1695\"\u003eBody Height\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1696\" data-end=\"1708\"\u003e7.000 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1709\" data-end=\"1740\"\u003e\n\u003ctd data-start=\"1709\" data-end=\"1727\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1711\" data-end=\"1726\"\u003eBody Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1727\" data-end=\"1740\"\u003e13.000 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1741\" data-end=\"1770\"\u003e\n\u003ctd data-start=\"1741\" data-end=\"1758\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1743\" data-end=\"1757\"\u003eBody Width\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1758\" data-end=\"1770\"\u003e9.000 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1771\" data-end=\"1805\"\u003e\n\u003ctd data-start=\"1771\" data-end=\"1792\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1773\" data-end=\"1791\"\u003eOverall Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1792\" data-end=\"1805\"\u003e23.000 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1806\" data-end=\"1853\"\u003e\n\u003ctd data-start=\"1806\" data-end=\"1834\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1808\" data-end=\"1833\"\u003eInlet Inside Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1834\" data-end=\"1853\"\u003e— (Flange type)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1854\" data-end=\"1896\"\u003e\n\u003ctd data-start=\"1854\" data-end=\"1884\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1856\" data-end=\"1883\"\u003eOutlet Outside Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1884\" data-end=\"1896\"\u003e2.750 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1897\" data-end=\"1928\"\u003e\n\u003ctd data-start=\"1897\" data-end=\"1918\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1899\" data-end=\"1917\"\u003eInlet Location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1918\" data-end=\"1928\"\u003eOffset\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1929\" data-end=\"1961\"\u003e\n\u003ctd data-start=\"1929\" data-end=\"1951\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1931\" data-end=\"1950\"\u003eOutlet Location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1951\" data-end=\"1961\"\u003eOffset\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1962\" data-end=\"1988\"\u003e\n\u003ctd data-start=\"1962\" data-end=\"1983\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1964\" data-end=\"1982\"\u003eInlet Quantity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1983\" data-end=\"1988\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1989\" data-end=\"2016\"\u003e\n\u003ctd data-start=\"1989\" data-end=\"2011\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1991\" data-end=\"2010\"\u003eOutlet Quantity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2011\" data-end=\"2016\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2017\" data-end=\"2056\"\u003e\n\u003ctd data-start=\"2017\" data-end=\"2037\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"2019\" data-end=\"2036\"\u003eBody Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2037\" data-end=\"2056\"\u003eStainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2057\" data-end=\"2086\"\u003e\n\u003ctd data-start=\"2057\" data-end=\"2079\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"2059\" data-end=\"2078\"\u003eHanger Included\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2079\" data-end=\"2086\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2087\" data-end=\"2110\"\u003e\n\u003ctd data-start=\"2087\" data-end=\"2104\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"2089\" data-end=\"2103\"\u003eReversible\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2104\" data-end=\"2110\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2111\" data-end=\"2137\"\u003e\n\u003ctd data-start=\"2111\" data-end=\"2125\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"2113\" data-end=\"2124\"\u003eFitment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2125\" data-end=\"2137\"\u003eSpecific\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2138\" data-end=\"2166\"\u003e\n\u003ctd data-start=\"2138\" data-end=\"2155\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"2140\" data-end=\"2154\"\u003eGrade Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2155\" data-end=\"2166\"\u003ePremium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2167\" data-end=\"2198\"\u003e\n\u003ctd data-start=\"2167\" data-end=\"2186\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"2169\" data-end=\"2185\"\u003eInlet Offset\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2186\" data-end=\"2198\"\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=\"2200\" data-end=\"2203\"\u003e\n\u003ch2 data-start=\"2205\" data-end=\"2233\"\u003e\u003cstrong data-start=\"2208\" data-end=\"2233\"\u003eVehicle Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch3 data-start=\"2235\" data-end=\"2249\"\u003e\u003cstrong data-start=\"2239\" data-end=\"2249\"\u003eSubaru\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"2250\" data-end=\"2309\"\u003e\n\u003cli data-start=\"2250\" data-end=\"2309\"\u003e\n\u003cp data-start=\"2252\" data-end=\"2278\"\u003e\u003cstrong data-start=\"2252\" data-end=\"2276\"\u003eForester (2014–2018)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"2281\" data-end=\"2309\"\u003e\n\u003cli data-start=\"2281\" data-end=\"2309\"\u003e\n\u003cp data-start=\"2283\" data-end=\"2309\"\u003e2.5L H4 (2498cc \/ 152 cid)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2311\" data-end=\"2314\"\u003e\n\u003ch2 data-start=\"2316\" data-end=\"2343\"\u003e\u003cstrong data-start=\"2319\" data-end=\"2343\"\u003eInstallation \u0026amp; Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul data-start=\"2345\" data-end=\"2869\"\u003e\n\u003cli data-start=\"2345\" data-end=\"2430\"\u003e\n\u003cp data-start=\"2347\" data-end=\"2430\"\u003e\u003cstrong data-start=\"2347\" data-end=\"2382\"\u003eDirect-fit, bolt-on replacement\u003c\/strong\u003e – installation requires no cutting or welding\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2431\" data-end=\"2504\"\u003e\n\u003cp data-start=\"2433\" data-end=\"2504\"\u003e\u003cstrong data-start=\"2433\" data-end=\"2453\"\u003eHangers included\u003c\/strong\u003e – designed to align with factory mounting points\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2505\" data-end=\"2574\"\u003e\n\u003cp data-start=\"2507\" data-end=\"2574\"\u003e\u003cstrong data-start=\"2507\" data-end=\"2525\"\u003eNot reversible\u003c\/strong\u003e – install in correct orientation per OE layout\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2575\" data-end=\"2655\"\u003e\n\u003cp data-start=\"2577\" data-end=\"2655\"\u003e\u003cstrong data-start=\"2577\" data-end=\"2607\"\u003eTwo-bolt flange connection\u003c\/strong\u003e – ensure gasket compatibility when installing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2656\" data-end=\"2708\"\u003e\n\u003cp data-start=\"2658\" data-end=\"2708\"\u003e\u003cstrong data-start=\"2658\" data-end=\"2706\"\u003eIntended for use with factory exhaust system\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2709\" data-end=\"2793\"\u003e\n\u003cp data-start=\"2711\" data-end=\"2793\"\u003e\u003cstrong data-start=\"2711\" data-end=\"2752\"\u003eProfessional installation recommended\u003c\/strong\u003e to ensure proper sealing and alignment\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2794\" data-end=\"2869\"\u003e\n\u003cp data-start=\"2796\" data-end=\"2869\"\u003e\u003cstrong data-start=\"2796\" data-end=\"2838\"\u003eCheck heat shield and rubber isolators\u003c\/strong\u003e for wear before installation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"WALKER","offers":[{"title":"Default Title","offer_id":45883691401415,"sku":"WAL21904","price":201.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0665\/2277\/5751\/files\/Screenshot2025-11-24172300.png?v=1764033729","url":"https:\/\/mainstreeteshop.com\/products\/walker-exhaust-muffler-21904","provider":"MAIN STREET ESHOP","version":"1.0","type":"link"}