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

Restore Your MDX Gun Performance

The Miller 2200169 Power Pin Assembly is a critical replacement part designed exclusively for the Miller MDX™-100 and MDX™-250 series MIG guns. Over time, the power pin on your welding gun can become worn, damaged, or corroded, leading to poor electrical conductivity, erratic arcs, or gas leaks. Replacing this component ensures your equipment operates at peak efficiency, maintaining the high standards expected from Miller Electric products.

Precise Fit and Function

Engineered to exact factory specifications, this power pin assembly guarantees a perfect fit into the back end of your MDX gun. It serves as the primary interface between the gun and the welding machine, facilitating the transfer of welding current, shielding gas, and the welding wire itself. A secure and clean connection here is vital for smooth wire feeding and stable arc characteristics.

Important Installation Note

Please note that this assembly is the power pin body only. To complete the installation, you must pair it with a wire-specific power pin cap, which is sold separately. This modular design allows you to tailor the gun to your specific wire diameter:

• Use part 2200170 for wire sizes .023" to .030".
• Use part 2200171 for wire sizes .030" to .045".

Whether you are performing routine maintenance or repairing a damaged gun, trust genuine Miller parts from Josef Gas to keep your fabrication projects moving forward without interruption.