PAR44-564-15 - Parker 44-564-15 Replacement Liner for Tweco/Magnum 300-400A Guns

High-Performance Replacement MIG Liner for Industrial Applications

The Parker 44-564-15 is a premium-quality replacement MIG gun liner designed to meet the rigorous demands of industrial welding environments. Engineered as a direct interchange for the Tweco 44-564-15 and compatible Lincoln Magnum parts, this liner is specifically calibrated for 3/64-inch (1.2mm) welding wire. While many standard liners are designed for steel wires in the 0.035-0.045 range, the specific internal diameter of this conduit is optimized for 3/64-inch wire, which is a standard diameter for aluminum MIG welding applications. Ensuring the correct liner-to-wire tolerance is critical for preventing micro-arcing inside the cable and ensuring consistent current transfer at the contact tip.

This liner measures 15 feet in length, making it suitable for standard 15-foot MIG gun cable assemblies. It is compatible with industry-standard 300 Amp and 400 Amp guns, including the widely used Tweco #3 and #4 series, as well as the Lincoln Magnum 300 and 400 series. The construction utilizes high-grade materials that resist kinking and reduce the coefficient of friction, which is particularly important when feeding softer aluminum wires over long distances. By maintaining structural integrity under thermal stress, the Parker 44-564-15 minimizes downtime associated with wire bird-nesting and erratic arc characteristics.

For procurement specialists and facility managers, choosing Parker replacement parts offers a balance of cost-effectiveness and OEM-level performance. This liner integrates seamlessly into existing preventative maintenance schedules for MIG equipment. It features a standard back-end termination that fits securely into the power pin or feeder adapter of compatible wire feeders, ensuring a gas-tight seal and proper alignment with the drive rolls. Whether used in automotive fabrication, marine repair, or general manufacturing, this liner provides the reliability required for high-volume production.