{"product_id":"walker-exhaust-resonator-21398","title":"WALKER - Exhaust Resonator - 21398","description":"\u003ch2 data-start=\"320\" data-end=\"342\"\u003eProduct Description\u003c\/h2\u003e\n\u003cp data-start=\"344\" data-end=\"744\"\u003eThe WALKER 21398 Exhaust Resonator is engineered to deliver OE-style sound, performance, and exhaust flow for a variety of GM sedans. Built with \u003cstrong data-start=\"489\" data-end=\"517\"\u003edurable aluminized steel\u003c\/strong\u003e, this resonator helps resist corrosion while providing a long service life. Its precision-tuned design reproduces factory exhaust tone by using OE-style louvered tubes (where applicable) to reduce radiated noise and harmonics.\u003c\/p\u003e\n\u003cp data-start=\"746\" data-end=\"1002\"\u003eFeaturing thick OE-style flanges, brackets, and hardware, the 21398 is designed for strength and durability. While this resonator is built to fit specific applications, installation may require custom fabrication or welding, depending on the exhaust setup.\u003c\/p\u003e\n\u003cp data-start=\"1004\" data-end=\"1160\"\u003eWalker resonators are engineered to match original equipment performance—delivering smooth, refined sound quality and reliable exhaust flow characteristics.\u003c\/p\u003e\n\u003chr data-start=\"1162\" data-end=\"1165\"\u003e\n\u003ch2 data-start=\"1167\" data-end=\"1182\"\u003eKey Features\u003c\/h2\u003e\n\u003cul data-start=\"1184\" data-end=\"1581\"\u003e\n\u003cli data-start=\"1184\" data-end=\"1248\"\u003e\n\u003cp data-start=\"1186\" data-end=\"1248\"\u003e\u003cstrong data-start=\"1186\" data-end=\"1226\"\u003eCorrosion-Resistant Aluminized Steel\u003c\/strong\u003e enhances durability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1249\" data-end=\"1316\"\u003e\n\u003cp data-start=\"1251\" data-end=\"1316\"\u003e\u003cstrong data-start=\"1251\" data-end=\"1277\"\u003eOE-Style Sound Quality\u003c\/strong\u003e using louvered tubes to reduce noise\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1317\" data-end=\"1385\"\u003e\n\u003cp data-start=\"1319\" data-end=\"1385\"\u003e\u003cstrong data-start=\"1319\" data-end=\"1348\"\u003eCustomizable Installation\u003c\/strong\u003e may require welding or fabrication\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1386\" data-end=\"1462\"\u003e\n\u003cp data-start=\"1388\" data-end=\"1462\"\u003e\u003cstrong data-start=\"1388\" data-end=\"1412\"\u003eDurable Construction\u003c\/strong\u003e with thick OE-style flanges and strong brackets\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1463\" data-end=\"1534\"\u003e\n\u003cp data-start=\"1465\" data-end=\"1534\"\u003e\u003cstrong data-start=\"1465\" data-end=\"1532\"\u003eEngineered for OE-Level Fitment, Flow, and Acoustic Performance\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1535\" data-end=\"1581\"\u003e\n\u003cp data-start=\"1537\" data-end=\"1581\"\u003e\u003cstrong data-start=\"1537\" data-end=\"1579\"\u003eDesigned to Extend Exhaust System Life\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1583\" data-end=\"1586\"\u003e\n\u003ch2 data-start=\"1588\" data-end=\"1615\"\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=\"1617\" data-end=\"2175\" class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead data-start=\"1617\" data-end=\"1643\"\u003e\n\u003ctr data-start=\"1617\" data-end=\"1643\"\u003e\n\u003cth data-start=\"1617\" data-end=\"1633\" data-col-size=\"sm\"\u003eSpecification\u003c\/th\u003e\n\u003cth data-start=\"1633\" data-end=\"1643\" data-col-size=\"sm\"\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody data-start=\"1670\" data-end=\"2175\"\u003e\n\u003ctr data-start=\"1670\" data-end=\"1687\"\u003e\n\u003ctd data-start=\"1670\" data-end=\"1678\" data-col-size=\"sm\"\u003eShape\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1678\" data-end=\"1687\"\u003eRound\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1688\" data-end=\"1711\"\u003e\n\u003ctd data-start=\"1688\" data-end=\"1697\" data-col-size=\"sm\"\u003eFinish\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1697\" data-end=\"1711\"\u003eAluminized\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1712\" data-end=\"1737\"\u003e\n\u003ctd data-start=\"1712\" data-end=\"1728\" data-col-size=\"sm\"\u003eBody Material\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1728\" data-end=\"1737\"\u003eSteel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1738\" data-end=\"1775\"\u003e\n\u003ctd data-start=\"1738\" data-end=\"1751\" data-col-size=\"sm\"\u003eInlet Type\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1751\" data-end=\"1775\"\u003e2-Bolt Welded Flange\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1776\" data-end=\"1809\"\u003e\n\u003ctd data-start=\"1776\" data-end=\"1790\" data-col-size=\"sm\"\u003eOutlet Type\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1790\" data-end=\"1809\"\u003ePipe Connection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1810\" data-end=\"1842\"\u003e\n\u003ctd data-start=\"1810\" data-end=\"1832\" data-col-size=\"sm\"\u003eInlet Configuration\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1832\" data-end=\"1842\"\u003eCenter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1843\" data-end=\"1876\"\u003e\n\u003ctd data-start=\"1843\" data-end=\"1866\" data-col-size=\"sm\"\u003eOutlet Configuration\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1866\" data-end=\"1876\"\u003eCenter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1877\" data-end=\"1899\"\u003e\n\u003ctd data-start=\"1877\" data-end=\"1894\" data-col-size=\"sm\"\u003eInlet Quantity\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1894\" data-end=\"1899\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1900\" data-end=\"1923\"\u003e\n\u003ctd data-start=\"1900\" data-end=\"1918\" data-col-size=\"sm\"\u003eOutlet Quantity\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1918\" data-end=\"1923\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1924\" data-end=\"1950\"\u003e\n\u003ctd data-start=\"1924\" data-end=\"1938\" data-col-size=\"sm\"\u003eBody Height\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1938\" data-end=\"1950\"\u003e4.000 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1951\" data-end=\"1978\"\u003e\n\u003ctd data-start=\"1951\" data-end=\"1965\" data-col-size=\"sm\"\u003eBody Length\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1965\" data-end=\"1978\"\u003e26.000 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1979\" data-end=\"2004\"\u003e\n\u003ctd data-start=\"1979\" data-end=\"1992\" data-col-size=\"sm\"\u003eBody Width\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1992\" data-end=\"2004\"\u003e4.000 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2005\" data-end=\"2042\"\u003e\n\u003ctd data-start=\"2005\" data-end=\"2030\" data-col-size=\"sm\"\u003eOutlet Inside Diameter\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2030\" data-end=\"2042\"\u003e2.250 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2043\" data-end=\"2081\"\u003e\n\u003ctd data-start=\"2043\" data-end=\"2069\" data-col-size=\"sm\"\u003eOutlet Outside Diameter\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2069\" data-end=\"2081\"\u003e2.250 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2082\" data-end=\"2109\"\u003e\n\u003ctd data-start=\"2082\" data-end=\"2100\" data-col-size=\"sm\"\u003eResonator Shape\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2100\" data-end=\"2109\"\u003eRound\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2110\" data-end=\"2150\"\u003e\n\u003ctd data-start=\"2110\" data-end=\"2138\" data-col-size=\"sm\"\u003eUniversal or Specific Fit\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2138\" data-end=\"2150\"\u003eSpecific\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2151\" data-end=\"2175\"\u003e\n\u003ctd data-start=\"2151\" data-end=\"2164\" data-col-size=\"sm\"\u003eGrade Type\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"2164\" data-end=\"2175\"\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=\"2177\" data-end=\"2180\"\u003e\n\u003ch2 data-start=\"2182\" data-end=\"2208\"\u003eVehicle Compatibility\u003c\/h2\u003e\n\u003cp data-start=\"2209\" data-end=\"2280\"\u003e\u003cem data-start=\"2209\" data-end=\"2280\"\u003e(Direct-fit applications listed; one resonator required per vehicle.)\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3 data-start=\"2282\" data-end=\"2295\"\u003e\u003cstrong data-start=\"2286\" data-end=\"2295\"\u003eBuick\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"2297\" data-end=\"2338\"\u003e\u003cstrong data-start=\"2297\" data-end=\"2336\"\u003eAllure — 3.8L V6 (3800cc \/ 231 cid)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"2339\" data-end=\"2352\"\u003e\n\u003cli data-start=\"2339\" data-end=\"2352\"\u003e\n\u003cp data-start=\"2341\" data-end=\"2352\"\u003e2005–2009\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2354\" data-end=\"2397\"\u003e\u003cstrong data-start=\"2354\" data-end=\"2395\"\u003eLaCrosse — 3.8L V6 (3800cc \/ 231 cid)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"2398\" data-end=\"2411\"\u003e\n\u003cli data-start=\"2398\" data-end=\"2411\"\u003e\n\u003cp data-start=\"2400\" data-end=\"2411\"\u003e2005–2009\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2413\" data-end=\"2416\"\u003e\n\u003ch3 data-start=\"2418\" data-end=\"2435\"\u003e\u003cstrong data-start=\"2422\" data-end=\"2435\"\u003eChevrolet\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"2437\" data-end=\"2478\"\u003e\u003cstrong data-start=\"2437\" data-end=\"2476\"\u003eImpala — 3.8L V6 (3800cc \/ 231 cid)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"2479\" data-end=\"2492\"\u003e\n\u003cli data-start=\"2479\" data-end=\"2492\"\u003e\n\u003cp data-start=\"2481\" data-end=\"2492\"\u003e2000–2005\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2494\" data-end=\"2526\"\u003e\u003cstrong data-start=\"2494\" data-end=\"2524\"\u003eImpala — 3.4L V6 (207 cid)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"2527\" data-end=\"2540\"\u003e\n\u003cli data-start=\"2527\" data-end=\"2540\"\u003e\n\u003cp data-start=\"2529\" data-end=\"2540\"\u003e2000–2005\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2542\" data-end=\"2579\"\u003e\u003cstrong data-start=\"2542\" data-end=\"2577\"\u003eMonte Carlo — 3.4L V6 (207 cid)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"2580\" data-end=\"2593\"\u003e\n\u003cli data-start=\"2580\" data-end=\"2593\"\u003e\n\u003cp data-start=\"2582\" data-end=\"2593\"\u003e2000–2005\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2595\" data-end=\"2598\"\u003e\n\u003ch3 data-start=\"2600\" data-end=\"2615\"\u003e\u003cstrong data-start=\"2604\" data-end=\"2615\"\u003ePontiac\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"2617\" data-end=\"2662\"\u003e\u003cstrong data-start=\"2617\" data-end=\"2660\"\u003eGrand Prix — 3.8L V6 (3800cc \/ 231 cid)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"2663\" data-end=\"2676\"\u003e\n\u003cli data-start=\"2663\" data-end=\"2676\"\u003e\n\u003cp data-start=\"2665\" data-end=\"2676\"\u003e2005–2008\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2678\" data-end=\"2681\"\u003e\n\u003ch2 data-start=\"2683\" data-end=\"2715\"\u003eInstallation \u0026amp; Warranty Notes\u003c\/h2\u003e\n\u003cul data-start=\"2717\" data-end=\"3071\"\u003e\n\u003cli data-start=\"2717\" data-end=\"2798\"\u003e\n\u003cp data-start=\"2719\" data-end=\"2798\"\u003eMay require welding or custom fabrication depending on vehicle exhaust layout\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2799\" data-end=\"2863\"\u003e\n\u003cp data-start=\"2801\" data-end=\"2863\"\u003eDesigned to match OE-style routing and sound characteristics\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2864\" data-end=\"2928\"\u003e\n\u003cp data-start=\"2866\" data-end=\"2928\"\u003eInspect all gaskets, clamps, and hangers before installation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2929\" data-end=\"2999\"\u003e\n\u003cp data-start=\"2931\" data-end=\"2999\"\u003eEnsure proper alignment to avoid vibration and backpressure issues\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3000\" data-end=\"3071\"\u003e\n\u003cp data-start=\"3002\" data-end=\"3071\"\u003eBuilt for long service life with OE-style structural reinforcements\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"WALKER","offers":[{"title":"Default Title","offer_id":45855951290567,"sku":"WAL21398","price":90.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0665\/2277\/5751\/files\/Screenshot2025-11-21104408.png?v=1763750648","url":"https:\/\/mainstreeteshop.com\/products\/walker-exhaust-resonator-21398","provider":"MAIN STREET ESHOP","version":"1.0","type":"link"}