2200169 - Miller MDX-100 & MDX-250 Replacement Power Pin Assembly

Genuine Miller Replacement for MDX Series

Maintain the integrity of your welding setup with the Miller 2200169 Power Pin Assembly. This component is the OEM replacement for the rear connection pin found on Miller MDX™-100 and MDX™-250 MIG guns. The power pin is the lifeline of your MIG gun, responsible for seating the gun into the wire feeder and transmitting the welding power and shielding gas to the nozzle.

Durability and Compatibility

Constructed from high-quality conductive materials, this power pin is built to withstand the thermal and mechanical stresses of industrial welding. It is designed to thread securely into the handle of the MDX series guns, providing a robust connection point that resists loosening during operation. Using genuine Miller parts ensures that the gas ports align correctly and that the electrical resistance remains negligible, preventing overheating at the connection point.

Modular Configuration

The Miller MDX system utilizes a two-part power pin configuration to optimize wire guidance. This item (2200169) is the main pin assembly. It requires a specific polymer cap (not included) to function correctly with your chosen wire size. This design feature helps prevent wire shaving and bird-nesting at the feeder inlet. Ensure you have the correct corresponding cap—either the 2200170 (small diameter) or 2200171 (large diameter)—ready for installation when replacing this pin.

Application

Ideal for welding maintenance technicians and fabricators using the Miller MDX platform, this part allows for quick field repairs to extend the service life of your MIG gun assembly.