M169-598-25 - M-25 Style Replacement MIG Gun for Miller - 250A, 25ft

Technical Overview

The CM M-25 Style MIG Gun is a premium aftermarket replacement designed to meet or exceed the specifications of the original Miller M-25 welding gun (OEM part number 169598). Engineered for industrial durability and performance, this gun is rated for 250 Amperes at a 60% duty cycle when using CO2 shielding gas, making it an ideal choice for medium to heavy-duty fabrication tasks. The most distinguishing feature of this specific model is its extended 25-foot cable assembly, providing superior reach compared to standard 12-foot or 15-foot options.

The gun features a direct-connect Miller-style back end, ensuring seamless compatibility with a wide range of Miller power sources, including the Millermatic 200, 210, 212, 250, 251, and 252 series, as well as the Millermatic Vintage. The trigger connection utilizes a standard 4-pin configuration (though often only two pins are active for the trigger signal), matching the receptacle found on these machines.

Internally, the cable is constructed with high-grade copper stranding to minimize voltage drop over the extended 25-foot length, ensuring a stable arc even at the maximum reach. The outer jacket is made from abrasion-resistant rubber, designed to withstand the rigors of a shop environment. The gun comes pre-configured for .035" to .045" wire diameters but can be adapted for other sizes by changing the liner and contact tips. It utilizes standard Miller M-series consumables, including the 169-715 nozzle, 169-716 gas diffuser, and 000-series contact tips, ensuring that replacement parts are readily available and cost-effective.

Compatibility & Specifications

This gun is designed as a plug-and-play solution for Miller wire feeders and integrated MIG machines that utilize the standard Miller gun receptacle. It is not compatible with spool gun ports or machines requiring a Tweco or Euro adaptor unless a separate adapter kit is used. The ergonomic handle design reduces operator fatigue during long weld cycles, and the heavy-duty spring strain reliefs protect the cable from kinking at stress points.