14201113 - Tweco Style 42-3545-15 MIG Gun Liner 15ft for .035-.045 Wire

Restore Your MIG Gun's Performance

Is your MIG welder sputtering, sticking, or feeding wire unevenly? The problem might not be your machine—it's likely your liner. The Universal Conduit Liner (.035-.045 15Ft) is the perfect tune-up part for your welding torch. Designed to fit the industry-standard Tweco style guns (No. 1 and No. 2 sizes), this liner replaces the internal wire guide that often gets clogged with copper dust and dirt over time.

This liner is built from durable, zinc-plated spring steel wire wound into a flexible conduit. This construction ensures that your welding wire slides through the cable with minimal friction, giving you a smooth, consistent arc. It is specifically sized for .035" and .045" wires, which are the standard sizes for MIG welding on mild steel. Whether you are welding on a car frame, fixing a trailer, or building a shop table, a fresh liner can make your welder feel brand new again.

Installation is straightforward. The liner comes in a 15-foot length, which fits standard long-reach torches. If you have a shorter 10-foot or 12-foot gun, simply feed the liner in and trim the excess from the front using wire cutters. Don't let a $20 part ruin your welds or cause frustrating bird-nests at the feeder. Keep a spare Tweco 1420-1113 liner in your toolbox to ensure you are always ready to lay down perfect beads.

Why Replace Your Liner?

• Smoother Feeding: Eliminates the drag that causes wire stuttering.
• Better Arc Control: Consistent wire speed means a more stable puddle.
• Prevent Jams: Reduces the risk of wire tangling at the drive rolls.
• Universal Fit: Works with most standard MIG torches found on shop welders.