14001133 - Tweco 40-15 MIG Gun Liner for .030-.035 Wire, 15 ft

Restore Smooth Feeding with the Tweco 40-15 Liner

Is your MIG wire stuttering, dragging, or burning back to the tip? Before you blame your machine or your settings, check your liner. The liner is the backbone of your MIG gun, and over time, it fills with copper shavings, dirt, and rust. The Tweco 1400-1133 (40-15) is the genuine replacement liner you need to get your 15-foot Tweco gun running like new again. Designed specifically for the most common wire sizes—.030" and .035"—this liner ensures your wire glides smoothly from the feeder to the puddle.

Don't settle for generic knock-offs that might kink or fit poorly. This is a genuine Tweco part, built with zinc-plated spring steel that resists rust and reduces drag. It comes ready to install; simply feed it through the back of your gun, seat it, and trim the excess at the front end according to your gun's manual. It’s a five-minute fix that can save you hours of frustration on the job.

Whether you are running a classic Tweco No. 2 or a modern Spray Master, this 15-foot liner provides the consistent support your wire needs. If you are experiencing erratic feeding or "bird-nesting" at the drive rolls, a fresh liner is often the solution. Keep a spare 40-15 in your toolbox so you never have to stop a job due to a clogged gun.