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

Left Side Muffler for Kohler

This left side muffler replaces OE part number 2478612-S and quiets exhaust on Kohler CH18, CH20, CH22, CH25, CH620, CH730, and CH740 engines.

Overview

The left side muffler is a replacement exhaust component for Kohler Command series engines, reducing noise and directing exhaust safely away from the operator. It's commonly used on lawn and garden equipment, and this left side muffler meets the factory fit for quick installation. Designed for small engine mechanics and DIY enthusiasts, the left side muffler restores proper backpressure and sound levels.

Built For Performance

• Aluminized steel construction resists rust and heat
• Precision-bent inlet pipe aligns with engine exhaust port
• Internal baffling reduces noise without excessive restriction
• OEM-style mounting bracket includes correct bolt hole spacing
• Durable welded seams prevent cracking under vibration
• Left-side orientation clears engine components on compatible models

Fits These Machines

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

On-The-Job Use

• Replacing a rusted or rattling muffler on lawn tractors and zero-turn mowers
• Installing on Kohler-powered generators to meet noise regulations
• Retrofitting pressure washer engines during annual service
• Keeping utility vehicle exhaust systems compliant and quiet

Specs At A Glance

Good To Know

Q: Does this muffler come with a gasket? A: It typically does not; purchase a new exhaust gasket separately to ensure a leak-free seal.

Q: Will this fit my Kohler Command PRO engine? A: It fits CH18-CH740 series engines specified; verify your model number and that the muffler mounts on the left side.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.