16401341 - Tweco 42-3545-15 MIG Gun Liner .035-.045 15ft

Smooth Wire Feeding with the Tweco 42-3545-15 Liner

Keep your MIG welding operations running without interruption using the genuine Tweco 42-3545-15 Conduit Liner. Known in the industry for reliability, this replacement liner is the backbone of a healthy wire feeding system. If you are experiencing stuttering wire, burn-backs, or bird-nesting at the drive rolls, a worn-out or clogged liner is often the culprit. Upgrading to a fresh Tweco liner is one of the most cost-effective ways to instantly improve your weld quality and reduce frustration on the shop floor.

Designed for the most popular wire diameters in general fabrication, this liner handles .035" and .045" solid and flux-cored wires with ease. The 15-foot length is perfect for standard MIG guns, providing ample reach for working around large assemblies. The liner is crafted from robust spring steel that is wound tightly to provide a smooth, continuous tunnel for your welding wire. The zinc plating not only protects the liner from rust during storage but also helps the wire glide effortlessly, reducing drag on your wire feeder's motor.

Why Choose Genuine Tweco Parts?
Tweco components are manufactured to strict tolerances to ensure a perfect fit. The 42-3545-15 features a brass stop that seats perfectly in Tweco-style adapters, preventing gas leaks and ensuring the liner stays firmly in place during welding. Whether you are welding mild steel in an automotive shop or fabricating heavy structural components, this liner delivers the consistency you need.

Installation is straightforward. Simply remove the old liner, unroll the new 42-3545-15, and slide it into the gun cable. If your gun is shorter than 15 feet, the liner can be trimmed to the exact length required using side cutters. Don't let a $20 part ruin a day's worth of production—keep a spare Tweco conduit liner in your toolbox to ensure you are always ready to weld.