26412203 - Tweco Liner Adapter Plug for .035-.045 Wire

Keep Your Feed Smooth with the Tweco 2641-2203

Every welder knows that a smooth wire feed is the backbone of a good MIG weld. You can have the best power source and the steadiest hand, but if your wire is dragging, stuttering, or bird-nesting, your bead is going to suffer. Often, the culprit isn't the liner itself, but how the liner is seated in the gun. That's where the Tweco 2641-2203 Adapter Plug comes in. This small brass component is the unsung hero that locks your liner into the back of the gun, ensuring it stays exactly where it needs to be while you're moving around the shop.

Designed specifically for .035" and .045" wires, this adapter plug fits snugly onto your liner and screws into the power pin. Why does this matter? If your liner isn't secured properly, it can 'float' back and forth inside the cable as you flex the gun. This movement creates gaps where the wire can snag or buckle, leading to erratic feeding and frustration. By replacing your adapter plug when you change your liner—or whenever you notice thread wear—you ensure a solid, mechanical connection that keeps the wire path straight and true.

This is a genuine Tweco part, meaning it's built to the exact tolerances of your Tweco MIG gun. Don't risk your weld quality with ill-fitting generic parts that might strip out your power pin or crush your liner. Whether you are running mild steel in a fabrication shop or doing repair work with flux-cored wire, having the right backend parts is essential. Keep a few of these 2641-2203 adapters in your toolbox so you aren't caught off guard during your next liner changeout. It’s a cheap insurance policy for perfect wire delivery.