2478612S Left Side Muffler for Kohler CH18 CH20 CH22 CH25 CH620 CH730 CH740

Product Overview

The 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.

Key Features & Performance

• Direct OEM-form replacement replicates original fit and performance
• Heavy-gauge steel construction with heat-resistant, corrosion-inhibiting finish
• Optimized internal baffling reduces exhaust noise while maintaining flow
• Pre-drilled mounting flange aligns with existing manifold bolt pattern
• Left-side outlet orientation routes exhaust away from operator and sensitive components

Fitment & Compatibility

• Kohler CH18
• Kohler CH20
• Kohler CH22
• Kohler CH25
• Kohler CH620
• Kohler CH730
• Kohler CH740

Common Uses

• Replacing a rusted, holed, or separated left-side muffler on lawn and garden tractors
• Exhaust system repair on zero-turn radius mowers equipped with Kohler engines
• Restoring factory noise levels on utility vehicles and small construction equipment
• Engine recommissioning after extended storage where muffler deterioration occurred

Technical Specifications

• Part Number(s): 2478612-S
• Side: Left

Frequently Asked Questions

Q: Will this muffler fit a Kohler CH740 engine? A: 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.

Q: Does this muffler include mounting gaskets or hardware? A: This muffler is sold as the primary assembly; gaskets, bolts, and heat shields are not included unless specifically noted in the listing.

Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.