243385 - Miller Spoolmate 200 Replacement Gun Tube Assembly (5-Inch)

Get Your Spoolmate 200 Back in Action

If you are struggling with erratic wire feeding or poor gas coverage on your aluminum projects, your gun tube might be the culprit. The Miller 243385 Gun Tube Assembly is the direct replacement barrel for your Spoolmate 200. Spool guns take a beating in the shop—whether it's from heat reflection when welding in tight corners or accidental drops. A bent or clogged tube creates friction on the soft aluminum wire, leading to bird-nesting and frustration. Swapping in a fresh 5-inch tube eliminates these drag points and restores that smooth, buttery feed you expect from a Miller gun.

Designed specifically for the 160-amp rating of the Spoolmate 200, this tube handles the heat while delivering shielding gas precisely where it's needed. Aluminum welding is unforgiving when it comes to porosity; a damaged tube can disrupt the gas envelope, ruining your bead appearance and strength. This assembly comes ready to install, fitting perfectly into your existing gun handle and accepting your standard consumables. It handles wire sizes from .023" to .035", making it versatile for thin gauge bodywork or thicker fabrication jobs.

Don't let a worn-out barrel compromise your welds. Keep a spare 243385 in your kit to ensure you aren't stuck waiting on parts in the middle of a job. This is the genuine article—built by Miller for Miller equipment—so you know it fits right the first time. Restore your gun's performance and get back to laying down perfect dimes.