636843 - ESAB ST-16 Replacement Liner Spring / Neck Liner

Keep Your ST-16 Running Smooth

If you are still running an ESAB or L-TEC ST-16 MIG gun, you know it's a workhorse that doesn't quit easily. However, even the toughest torches start to act up eventually. If you are experiencing stuttering wire, erratic feeding, or the wire feels like it's "chattering" as it comes out of the tip, the problem might not be your drive rolls—it might be the liner spring in the neck. The ESAB 636843 Liner Spring is the direct replacement part you need to get that smooth, buttery feed back into your welding operation.

The neck of the torch is where the wire takes the tightest turn. Because of this bend, the liner in this area takes a beating. The wire digs into the side of the spring over time, creating friction and drag. Once that spring wears out, your wire feed speed at the tip becomes inconsistent, ruining your bead appearance and causing frustration. This replacement spring is designed to fit perfectly inside the ST-16 gooseneck, providing a fresh, slick path for your wire to travel through right before it hits the contact tip.

Why replace the Liner Spring?

• Fix Feeding Issues: Eliminates the drag that causes wire stutter.
• Prevent Burnback: Consistent feed speed prevents the wire from burning back into the tip.
• Extend Torch Life: Keeping the internals fresh keeps your classic ST-16 making money.

Installation is straightforward for anyone familiar with MIG gun maintenance. Simply disassemble the front end of your ST-16, remove the worn-out spring, and slide this new one in. It’s a cheap insurance policy against bad welds. Don't fight your equipment; if your ST-16 is acting up, check the neck liner. This genuine ESAB part is built to the exact specs of the original, so you don't have to worry about fitment issues or trimming it to size. Keep a couple in your toolbox so you aren't stuck waiting on parts when you have a deadline to meet.