14001134 - Tweco 35-40-20 MIG Liner for .035-.045 Wire, 20ft

Keep Your Wire Running Smooth with the Tweco 35-40-20 Liner

Is your MIG wire stuttering, dragging, or burning back to the tip? The culprit is often a dirty or kinked liner. Restore your welding gun's performance with the Tweco 35-40-20 Standard Conduit Liner. This is the industry-standard replacement liner for welders running the most common wire sizes: .035" and .045". Built by Tweco, a leader in MIG gun technology, this liner is designed to take a beating while delivering wire smoothly to your puddle, hour after hour.

This liner comes in a 20-foot length, which is perfect for shops that use longer gun cables to reach around large assemblies. If you have a standard 15-foot or 12-foot gun, simply install the liner and trim the excess at the front end—it's a universal solution for Tweco-style guns. It fits perfectly in Tweco No. 3 and No. 4 guns, as well as the Spray Master line. The steel coil construction is zinc-plated, which helps prevent rust buildup inside the cable that can contaminate your weld or clog the wire path.

Don't let downtime kill your productivity. A fresh liner is one of the cheapest insurance policies for a good weld. We recommend keeping a spare Tweco 35-40-20 in your toolbox so you can swap it out the moment you feel drag in the line. This liner is intended for use with steel and flux-cored wires. It is tough, flexible, and ready for heavy-duty industrial environments. Stop fighting your equipment and start welding smoothly again with genuine Tweco parts.

Why Choose This Liner?

• Universal Fit: Works with 10ft, 12ft, 15ft, and 20ft guns (trim to fit).
• Smooth Feeding: Reduces friction for consistent arc starts.
• Durable: Resists kinking and crushing under normal shop use.
• Versatile: Handles both solid MIG wire and Flux-Cored wire.