10401134 - Tweco Classic #4 MIG Gun for Miller Welders - 400A, 12ft

Tweco Classic 4 MIG Gun - 400A, 12ft, Miller Style

Upgrade or replace your current torch with the legendary Tweco Classic #4 MIG Gun, configured specifically for Miller welding machines. Known simply as the "Number 4" by welders across the globe, this torch has set the standard for air-cooled MIG welding performance for decades. Rated at 400 Amps at 60% duty cycle, it provides the power and thermal capacity needed for high-amperage welding on thick materials without overheating.

This model features a 12-foot cable assembly, which is often considered the "sweet spot" for MIG guns—long enough to provide good mobility around your workpiece, but short enough to minimize friction on the welding wire, ensuring smooth feeding for both solid and flux-cored wires. The back end is fitted with a Miller-style connector, allowing you to plug it directly into your Miller wire feeder or integrated MIG welder without the hassle of extra adapters or modification kits.

Key Benefits for the Welder:

• Proven Durability: Built with a rugged handle and armored cable to survive drops, drags, and sparks.
• Easy Maintenance: Uses standard Tweco consumables (tips, nozzles, diffusers) that you probably already have in your toolbox.
• High Performance: Excellent conductivity and gas coverage for high-quality welds.
• Comfort: The classic handle shape and trigger design are familiar and comfortable for all-day use.

The gun comes ready to weld with a standard setup, typically including a .035"-.045" liner, contact tip, and nozzle. It is fully serviceable, with every part from the trigger switch to the gooseneck being replaceable, extending the total life of the tool. If you need a reliable, high-amperage MIG gun that fits your Miller machine and won't let you down in the middle of a job, the Tweco #4 is the professional's choice.