870394 - Tweco MIG Gun Head Assembly Replacement 870394

Restore Your Torch Performance with the Tweco 870394 Head Assembly

Is your MIG gun sputtering, overheating, or feeding wire inconsistently? The problem might not be your machine or your technique—it could be a worn-out gun head. The Tweco 870394 MIG Gun Head Assembly is the direct replacement you need to breathe new life into your trusty Tweco torch. As any experienced welder knows, the "gooseneck" or head of the gun takes the most abuse. It lives in the heat zone, gets battered by spatter, and is often used (incorrectly, we know) to knock slag off a weld. Eventually, the threads strip, the internal liner path gets rough, or the copper fatigues. When that happens, your arc stability suffers, and frustration sets in.

Don't fight your equipment. Swapping out a damaged head assembly is one of the most effective repairs you can perform to get your rig running like new. This genuine Tweco part is built to the exact specifications of your original gun, meaning you won't have to struggle with fitment issues or gas leaks. It provides a clean, smooth path for your wire and a solid electrical path for your current. This translates to a smoother arc, less spatter, and better-looking welds. Whether you are working in a fabrication shop, a garage, or out in the field, having a reliable torch is non-negotiable.

The 870394 assembly includes the necessary structure to hold your diffuser, tip, and nozzle in perfect alignment. If your old head is bent or clogged, you might be losing shielding gas coverage, leading to porosity in your welds. By installing this fresh assembly, you ensure that your gas flows evenly around the puddle, protecting your work and making your post-weld cleanup easier. It’s a small investment that pays off immediately in weld quality and operator comfort.

Keep your downtime to a minimum and your weld quality to a maximum. This replacement part is designed for durability and performance, giving you the confidence to tackle long beads and tough joints without worrying about your equipment failing. Grab a Tweco 870394 Head Assembly today and get back to laying down dimes with the smooth, consistent performance you expect from a top-tier MIG gun.