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8-6571 - Thermal Dynamics MIG Gun Liner Assembly 47X1557

Packaging: pack of 1
$266.42/EA $159.62/pack of 1 only $159.62/EASave 40%

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OVERVIEW

Smooth Feeding with the Thermal Dynamics 8-6571 MIG Liner

Is your wire stuttering, slipping, or burning back to the tip? The culprit is often a dirty or kinked liner. The Thermal Dynamics 8-6571 Liner Assembly (also known as 47X1557) is the direct replacement you need to get your MIG gun running like new again. As a welder, you know that the liner is the backbone of your wire delivery system. If the wire can't slide through the cable easily, your drive rolls have to work overtime, leading to birdnesting at the feeder and an unstable, frustrating arc at the workpiece.

This high-quality steel liner is designed to handle the rigors of daily welding. It provides a smooth, low-friction path for your welding wire, ensuring that it feeds at a constant speed. This consistency is crucial for maintaining a steady voltage and achieving that perfect "bacon frying" sound. Whether you are working in a fabrication shop or a garage, replacing an old, clogged liner is one of the cheapest and most effective ways to improve your weld quality immediately. Don't let a worn-out $20 part ruin a $2000 project.

Installation is straightforward for anyone familiar with MIG gun maintenance. Simply remove the old liner, lay the gun cable out flat, and slide the new 8-6571 liner in. Remember to measure twice and cut once—a liner that is cut too short can cause micro-arcing inside the gun, while one that is too long won't seat properly. This OEM liner from Thermal Dynamics is built to the correct tolerances, so you don't have to fight to get it installed. Keep a spare in your toolbox so you're never stuck waiting on parts when a job needs to get done.

Why Replace Your Liner?

  • Eliminate Drag: Old liners fill with shop dust and wire coating, causing drag.
  • Stop Birdnesting: Smooth feeding prevents wire pile-ups at the drive rolls.
  • Stable Arc: Consistent wire speed means a consistent arc and better penetration.
  • OEM Fit: Designed specifically for your Thermal Dynamics equipment.
Additional Information
Packaging Description:pack-of-1
Brand:Thermal Dynamics
Product Type:MIG Gun Liner
Part Number:8-6571
Alternate Part Number:47X1557

INCLUDED

  • 1 x Thermal Dynamics 8-6571 Liner Assembly

APPLICATIONS

  • MIG/MAG Welding
  • Flux-Cored Arc Welding (FCAW)
  • General Fabrication
  • Automotive Repair
  • Maintenance and Repair Operations (MRO)

FAQ

The manufacturer part number is 8-6571. It is also referenced as 47X1557.

Yes, this is a genuine Thermal Dynamics product.

This item is sold as a package of 1.

If you experience erratic wire feeding, slipping drive rolls, or the wire is difficult to push through the cable by hand, it is likely time to replace the liner.

Remove the nozzle, contact tip, and gas diffuser. Disconnect the gun from the feeder. Pull the old liner out from the back end. Slide the new liner in, ensuring the cable is straight. Trim the liner to the correct length according to your gun's manual.

You can try blowing it out with compressed air, but if the liner is kinked or heavily clogged with lubricant and shavings, replacement is the only reliable solution.

No, liners are specific to the gun brand and length. This is designed for specific Thermal Dynamics / Thermal Arc assemblies.