KP1958-4 - Lincoln Electric KP1958-4 Red Aluminum MIG Liner, 1/16 in, 15 ft

Precision Aluminum Wire Feeding Solution

The Lincoln Electric KP1958-4 Liner is a specialized component engineered specifically for the demands of aluminum MIG welding. Unlike standard steel liners used for hard wires, this liner is constructed to handle the unique properties of soft aluminum filler metals. Aluminum wire, particularly in the 1/16-inch (1.6 mm) diameter range, is susceptible to deformation, shaving, and buckling—commonly referred to as "bird-nesting"—when pushed through a welding torch. The KP1958-4 addresses these issues through a low-friction internal composition that ensures smooth, consistent delivery from the drive rolls to the contact tip.

This liner features a length of 15 feet (4.6 meters), making it suitable for standard length MIG gun cable assemblies used in industrial fabrication environments. The "Red" color coding is part of Lincoln Electric's identification system, allowing maintenance personnel and welding operators to instantly verify that the correct liner is installed for the wire diameter and material type being used. Using the correct liner is critical in aluminum applications; using a steel liner can cause aluminum shavings to build up and clog the conduit, leading to erratic arc performance and downtime.

Industrial MRO procurement specialists should note that the KP1958-4 is a genuine Lincoln Electric part, ensuring dimensional accuracy and material compatibility with Lincoln Magnum and similar MIG gun platforms. Regular replacement of liners is a key preventive maintenance step in high-volume aluminum welding operations to maintain weld quality and equipment longevity. This product is packaged individually and is ready for immediate installation into compatible torch assemblies.