186407 - Miller 186407 Replacement Conductor Tube / Gooseneck

Get Your Gun Back in the Fight

We've all been there—you drop your MIG gun, something heavy falls on it, or you just use it as a hammer one too many times (we won't tell). Suddenly, the neck is bent, the wire is dragging, and your welds are looking sloppy. The Miller 186407 Head Tube is the direct replacement part you need to fix that busted neck and get back to laying beads. This isn't some cheap knock-off that doesn't thread right; it's the real-deal Miller part made to fit your gun perfectly.

The head tube, or gooseneck, is the backbone of your MIG gun's front end. It carries the welding current and the shielding gas to the nozzle. If your old tube is damaged, you might notice your gun getting hotter than usual, the gas coverage getting spotty, or the wire stuttering as it tries to push through a kinked curve. Swapping out the old tube for a fresh 186407 solves these headaches instantly. It restores the smooth path your wire needs and ensures the electricity flows efficiently to the tip, giving you that crisp, sizzling arc you expect from a Miller machine.

Installation is quick and painless. Just disconnect the gun from the machine (safety first!), remove the nozzle, tip, and diffuser, and unscrew the old head tube from the handle. Screw the new one in, tighten it down, and reassemble your front-end parts. It’s one of the easiest repairs you can do in the shop, and it makes a massive difference in how your gun handles. Don't fight with a damaged gun and waste time grinding out bad welds—replace the neck and keep your production moving.

Built for the Shop

Miller builds these head tubes to survive the real world. They are tough, heat-resistant, and designed to take the abuse of a working shop. Whether you are fabricating structural steel, repairing heavy equipment, or working on a custom project, having a straight, clean head tube is essential for comfort and control. The angle is set just right to give you good visibility of the puddle without straining your wrist. Keep your gear in top shape with genuine Miller replacement parts.