1880270 - Miller M-25 to AccuLock MDX Consumable Conversion Kit

Standardize Your Welding Consumables

The Miller AccuLock MDX Consumables Conversion Kit (1880270) is a strategic upgrade for workshops and industrial environments utilizing the reliable Miller M-25 MIG gun. As welding technology evolves, managing inventory for multiple generations of equipment can become a logistical challenge. This conversion kit solves that problem by allowing your legacy M-25 guns—commonly found on Millermatic 200, 210, 250, and 252 machines—to utilize the modern AccuLock MDX consumable platform. By standardizing your consumables, you reduce the need to stock separate tips and nozzles for different gun models, streamlining your supply chain and reducing overhead costs.

This comprehensive kit comes with everything required to perform the upgrade in minutes. Inside the durable blue storage box, you will find a specialized conversion diffuser, a nozzle insulator, a standard flush nozzle, and a selection of the most popular contact tip sizes (.030, .035, and .045 inch). The transition is seamless and does not require replacing the gun liner, provided it was originally installed correctly. This means you can modernize your equipment without significant downtime or the expense of purchasing entirely new MIG guns.

Beyond inventory management, the AccuLock MDX system offers tangible operational benefits. The design focuses on keeping the front-end consumables tight and aligned, which is critical for consistent weld quality. The kit is an authentic Miller product, ensuring perfect fitment and reliability. Whether you are a small fabrication shop looking to simplify your toolbox or a large facility aiming to unify your consumable stock, this conversion kit offers a cost-effective solution to modernize your existing welding apparatus.

What's Inside the Box?

The kit is designed to be a "one-stop" solution. It includes the essential 1070116 diffuser/adapter which bridges the gap between the M-25 gun tube and the MDX tips. It also provides the necessary 4623R nozzle insulator to protect the neck. You get a range of contact tips to cover various wire diameters immediately, ensuring you are ready to weld whatever the job requires. The included storage box keeps these precision parts organized and protected until installation.