291957 - Miller 291957 Replacement Engine Kohler CH730 Gas Electric Start

Restore Power to Your Miller Welder

When your industrial equipment demands a heart transplant, the Miller 291957 Replacement Engine is the definitive OEM solution. This unit is a genuine Kohler Command Pro CH730-3346, specifically configured to meet the rigorous demands of Miller engine-driven welders. Designed for durability and consistent performance, this gasoline engine ensures your mobile welding operations experience minimal downtime.

The engine features a robust V-Twin design, known for delivering smooth power output and reduced vibration, which is critical for maintaining stable welding arcs and generator power. One of the standout features of this specific model (Spec 3346) is the inclusion of an Electronic Choke (E-Choke). This advanced system automatically manages the fuel-to-air ratio during startup, eliminating the hassle of manual choking and ensuring reliable ignition even in harsh cold-weather environments or after long periods of inactivity.

As a direct replacement part from Miller Electric, this engine guarantees perfect alignment with your machine's mounting points, exhaust systems, and drive couplings. There is no need for retrofitting or fabrication; simply swap the old unit for this new powerhouse to restore your equipment to factory specifications. Whether you are running a Bobcat, Trailblazer, or another compatible Miller generator, this engine provides the torque and horsepower necessary for heavy-duty fabrication and repair work.

Key Benefits for Maintenance

• Direct Fit: Eliminates guesswork associated with generic engine replacements.


• Reliable Starting: The E-Choke technology reduces battery strain and operator frustration.


• Long Service Life: Kohler Command Pro engines are built with hydraulic valve lifters and cast iron cylinder liners for extended durability.

Invest in the longevity of your fleet with the Miller 291957. By choosing genuine OEM parts, you ensure that your welder continues to perform at the high standards required by professional tradespeople.