42-3035-15 - Tweco Style 42-3035-15 MIG Gun Liner 15ft .030-.035

Restore Smooth Wire Feeding with the 42-3035-15 Liner

Is your MIG wire stuttering, dragging, or burning back to the tip? The culprit is often a dirty or kinked liner. The Tweco Style 42-3035-15 MIG Gun Liner is the reliable solution to get your arc smooth and stable again. Designed for the welder who demands consistency, this 15-foot steel wound conduit is built to handle the rigors of daily welding while ensuring your wire glides effortlessly from the feeder to the puddle.

This liner is specifically sized for .030" and .035" wires, the most common sizes for general repairs, automotive work, and light structural fabrication. Using the correct liner size is critical; a liner that is too large can cause the wire to snake inside, leading to an erratic arc, while a liner that is too tight will cause excessive drag and motor strain. This unit hits the sweet spot for 250-amp class guns, providing excellent support for the wire column.

Compatibility You Can Trust:
If you are running a classic Tweco #2, a Spray Master 250, or even a Lincoln Magnum 250 that uses Tweco-style back ends, this is the part you need. It features the standard brass stop block used on Tweco-style guns, making installation a breeze. Simply remove the old liner, slide this one in, and tighten the set screw. If your gun cable is shorter than 15 feet (e.g., 10 or 12 feet), this liner can be easily trimmed to length using side cutters and a file to smooth the cut end.

Don't let a $15 part ruin a day's worth of welding. Over time, copper dust from the wire and shop grime build up inside your liner, creating friction that no amount of drive roll adjustment can fix. Swapping out your liner is standard maintenance that instantly revitalizes your gun's performance. The zinc-plated construction of this replacement liner helps resist rust and buildup better than bare steel, giving you a longer service life and less downtime.