615-0620-15 - MK Products 15ft Replacement Liner for Python/Cobra Guns (Lincoln Connection)

Restore Smooth Feeding with the MK Products Python Liner

If you are welding aluminum, you know that smooth wire feeding is the difference between a perfect stack of dimes and a frustrating birdnest. The MK Products 615-0620-15 is the genuine replacement liner for your 15-foot Python, Cobra, or Prince XL MIG gun. Designed specifically for setups running on Lincoln Electric power sources, this liner ensures that your push-pull system operates exactly as the engineers intended. Over time, aluminum shavings, shop dust, and lubricant residues build up inside your gun's liner, creating drag that confuses the synchronization between your push and pull motors. Replacing your liner is the single most effective maintenance step you can take to fix erratic arcs and stuttering wire.

Why Choose OEM?
MK Products invented the modern push-pull gun, and their liners are crafted to handle the unique challenges of soft aluminum wire. Unlike stiff steel liners used for hard wire, this conduit is flexible enough to maneuver around the shop but rigid enough to prevent the wire from buckling under the push pressure. The 15-foot length is pre-measured for standard MK gun cables, and the integrated Lincoln back-end fitting means you won't have to struggle with adapters or makeshift connections. It simply plugs in, seals tight, and gets you back to welding.

Installation and Performance
Installing the 615-0620-15 is straightforward. Simply disconnect your gun from the Lincoln feeder, remove the old liner assembly, and slide the new one in. A fresh liner reduces the load on your gun's motor, extending the life of your expensive equipment. Whether you are fabricating boat hulls, repairing trailers, or working on aerospace components, reliable feeding is non-negotiable. Don't let a $50 part ruin a $5,000 weldment. Keep a spare MK Products liner on the shelf and ensure your Python or Cobra gun delivers the high-performance results you expect.