KP45-40-15 - Lincoln Electric KP45-40-15 MIG Gun Liner .035-.045 for Magnum 100L

Smooth Wire Feeding for Better Welds

Don't let a dirty or kinked liner ruin your welds. The Lincoln KP45-40-15 MIG Gun Liner is the factory-original replacement for your Magnum 100L and Magnum PRO 175L welding guns. When your wire starts stuttering or the arc becomes unstable, the liner is often the culprit. This high-quality steel liner provides a clean, low-friction path for your welding wire, ensuring it reaches the weld puddle consistently and without interruption.

Built to handle the rigors of the shop, this liner is rated for wire sizes between .035" and .045". This covers the most common wire sizes used in general fabrication, auto body repair, and farm maintenance. The 15-foot length is standard for many Lincoln MIG guns, providing ample reach around large workpieces. If your gun cable is shorter, the liner is easily trimmed to the exact length required during installation, ensuring there are no gaps where the wire could snag.

Why Choose Genuine Lincoln Parts?

Using genuine Lincoln Electric consumables like the KP45-40-15 ensures that your equipment operates at factory specifications. Aftermarket liners may not have the correct outer diameter or coil pitch, leading to gas flow restrictions or wire drag. This liner is manufactured to tight tolerances to fit perfectly inside the gas hose of your Magnum gun, allowing for proper shielding gas coverage while guiding the wire.

Installation Tips

Installing a new liner is a quick maintenance task that pays off immediately. Simply remove the old liner from the back of the gun, unroll the new KP45-40-15, and slide it in. Ensure the liner is cut properly at the front end to sit flush against the gas diffuser or contact tip adapter, as a gap here can cause erratic feeding. Keep your welding projects moving smoothly with this essential replacement part.