KP3991-25 - Lincoln Magnum PRO AL Aluminum Conduit Liner, 25 ft, .035-1/16 in

Smooth Aluminum Feeding with the Lincoln KP3991-25 Liner

Experience frustration-free aluminum welding with the Lincoln Electric KP3991-25 Conduit Liner, designed exclusively for your Magnum® PRO AL Push-Pull MIG gun. Welding aluminum requires precision, and the journey of the wire from the spool to the puddle is where many problems begin. If you are dealing with erratic feeding, burn-backs, or the dreaded "birdnesting," your liner might be the culprit. This 25-foot replacement liner restores the smooth, low-friction path your soft aluminum wire needs to travel effortlessly.

Aluminum wire is notoriously difficult to feed over long distances because it is soft and pliable. Standard steel liners can scratch the wire or cause excessive drag, leading to shavings that clog the gun and stop production. The KP3991-25 is engineered with materials specifically chosen to handle aluminum alloys, reducing friction and protecting the wire surface. Whether you are running 0.035" wire for thinner gauge sheets or 1/16" wire for heavy structural welds, this liner provides the support and consistency required for high-quality X-ray quality welds.

At 25 feet long, this liner allows you to take full advantage of the reach provided by your Magnum PRO AL push-pull system. It is perfect for working on large projects like boat hulls, aluminum trailers, or tanker trucks where moving the power source isn't always an option. Don't let a worn-out liner compromise your weld quality or slow down your workflow. A fresh liner is one of the most cost-effective maintenance steps you can take to ensure your equipment runs like new.

Trust in the durability and reliability of genuine Lincoln Electric parts. The KP3991-25 is built to withstand the rigors of daily industrial use. It installs easily into your existing setup, getting you back under the hood faster. Keep your arc stable and your bead profile consistent by ensuring your wire feeding system is in top condition with this essential replacement component.