U4170H02 - Daihen Style .045 MIG Gun Liner - 3 Meter (10 ft) Replacement

Smooth Feeding with the Daihen U4170H02 Replacement Liner

If you are experiencing a sputtering arc, irregular wire feeding, or the dreaded "birdnest" at your drive rolls, your MIG liner is often the culprit. The Daihen U4170H02 Liner Assembly is the direct replacement you need to get your Daihen MIG gun back to peak performance. Designed for .045" (1.2mm) wire, this liner acts as the highway for your welding wire, and like any road, it needs to be smooth and clear for traffic to flow. Over time, your old liner gets clogged with shop dust, metal shavings, and lubricant residue, creating friction that ruins your weld consistency.

This 3-meter (10-foot) liner is built to handle the twists and turns of daily welding. Whether you are welding manually or overseeing a robotic setup, the flexibility of this steel spiral liner ensures that the wire moves freely even when the cable is looped or bent. Installing a fresh liner is one of the cheapest and most effective tune-ups you can perform on your welder. A fresh U4170H02 liner eliminates the drag that causes the wire to slip at the drive rolls, ensuring that the wire speed you set on the machine is exactly what comes out of the nozzle. This means better penetration, less spatter, and a much more enjoyable welding experience.

Installation is straightforward for anyone familiar with MIG gun maintenance. Simply remove the old liner, unroll the new U4170H02, and slide it into the back of the gun cable. It is crucial to measure and trim the liner correctly—too short, and you'll get micro-arcing inside the diffuser; too long, and you'll have feeding issues. This liner is manufactured to strict tolerances to ensure it seats perfectly in Daihen power pins and diffusers. Don't let a $20 part ruin a critical project. Keep a spare U4170H02 in your toolbox so you are never stuck fighting your equipment when you should be laying dimes.

Why Welders Choose This Liner:

• Reliable Feed: Solves the "stuttering" feeling in the gun handle.
• Perfect Fit: No need to modify or force the liner into the torch.
• Cost-Effective: Saves money on wasted wire and contact tips caused by burnback.