{"product_id":"2478612s-left-side-muffler-for-kohler-ch18-ch20-ch22-ch25-ch620-ch730-ch740","title":"2478612S Left Side Muffler for Kohler CH18 CH20 CH22 CH25 CH620 CH730 CH740","description":"\u003cstrong\u003eThis Left Side Muffler is a replacement exhaust component compatible with Kohler CH18, CH20, CH22, CH25, CH620, CH730, and CH740 engines and matches OEM Part# 2478612-S.\u003c\/strong\u003e\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Left Side Muffler attenuates exhaust noise on Kohler Command and Courage series engines found in a wide range of outdoor power equipment. Manufactured as a direct bolt-on replacement for part number 2478612-S, this Left Side Muffler restores factory sound levels and proper exhaust flow without modification. Equipment technicians and owners use it to replace corroded or damaged mufflers on lawn tractors, zero-turns, and utility vehicles.\u003c\/p\u003e\u003ch3\u003eKey Features \u0026amp; Performance\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDirect OEM-form replacement replicates original fit and performance\u003c\/li\u003e\n\u003cli\u003eHeavy-gauge steel construction with heat-resistant, corrosion-inhibiting finish\u003c\/li\u003e\n\u003cli\u003eOptimized internal baffling reduces exhaust noise while maintaining flow\u003c\/li\u003e\n\u003cli\u003ePre-drilled mounting flange aligns with existing manifold bolt pattern\u003c\/li\u003e\n\u003cli\u003eLeft-side outlet orientation routes exhaust away from operator and sensitive components\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment \u0026amp; Compatibility\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eKohler CH18\u003c\/li\u003e\n\u003cli\u003eKohler CH20\u003c\/li\u003e\n\u003cli\u003eKohler CH22\u003c\/li\u003e\n\u003cli\u003eKohler CH25\u003c\/li\u003e\n\u003cli\u003eKohler CH620\u003c\/li\u003e\n\u003cli\u003eKohler CH730\u003c\/li\u003e\n\u003cli\u003eKohler CH740\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCommon Uses\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eReplacing a rusted, holed, or separated left-side muffler on lawn and garden tractors\u003c\/li\u003e\n\u003cli\u003eExhaust system repair on zero-turn radius mowers equipped with Kohler engines\u003c\/li\u003e\n\u003cli\u003eRestoring factory noise levels on utility vehicles and small construction equipment\u003c\/li\u003e\n\u003cli\u003eEngine recommissioning after extended storage where muffler deterioration occurred\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number(s):\u003c\/strong\u003e 2478612-S\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSide:\u003c\/strong\u003e Left\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Will this muffler fit a Kohler CH740 engine?\u003cstrong\u003e A:\u003c\/strong\u003e Yes, the muffler is listed for CH18-CH25, CH620, CH730, and CH740 models; verify that the exhaust manifold flange matches left-side orientation before purchase.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Does this muffler include mounting gaskets or hardware?\u003cstrong\u003e A:\u003c\/strong\u003e This muffler is sold as the primary assembly; gaskets, bolts, and heat shields are not included unless specifically noted in the listing.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eProduct appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.\u003c\/em\u003e\u003c\/p\u003e","brand":"DURAFORCE","offers":[{"title":"Default Title","offer_id":53679685501201,"sku":"ZZ3A01408","price":298.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/2446\/2929\/files\/57_b33fb977-a65d-4b7d-9eca-b135c3526ff2.jpg?v=1781653024","url":"https:\/\/www.duraforce.com\/products\/2478612s-left-side-muffler-for-kohler-ch18-ch20-ch22-ch25-ch620-ch730-ch740","provider":"DURAFORCE","version":"1.0","type":"link"}