L4A-15 - Bernard L4A-15 Universal MIG Liner .045-1/16 15ft

Smooth Feeding for Professional Welders

Every welder knows that a bad liner can ruin a good day. If you are fighting with erratic wire feeding, bird-nesting at the drive rolls, or a stuttering arc, it might be time to swap out your liner. The Bernard L4A-15 Universal Conventional Liner is the go-to replacement for your 15-foot MIG guns running .045" to 1/16" wire. Whether you are running a Bernard Q-Gun, S-Gun, or a Tregaskiss setup, this liner is built to get you back to laying smooth beads without the headache.

Built Tough for the Shop
Cheap liners kink and wear out fast, filling your cable with shavings that clog up the works. The L4A-15 is made from high-carbon steel wire, giving it the backbone needed to guide your filler metal smoothly from the feeder to the contact tip. This extra durability means you spend less time fixing your gun and more time under the hood. The high-carbon coil design reduces friction, which is essential when you are working in tight spots and your cable is looped or bent.

Easy Identification and Install
Nobody likes guessing if they grabbed the right part from the tool crib. This liner comes color-coded (standard yellow for this size) so you know instantly that it matches your .045 or 1/16 wire setup. Installation is straightforward—just feed it through the back of the gun, seat it properly, and trim the excess at the front end according to your gun's manual. It’s a small maintenance task that makes a massive difference in your weld quality.

Universal Compatibility
One of the best things about the Bernard L4A-15 is its versatility. It fits a wide range of industrial guns, including the popular BTB (Best of the Best) series. This means if your shop runs a mix of Bernard and Tregaskiss equipment, you can likely stock just this one liner for all your 15-foot, medium-to-heavy wire applications. Don't let a worn-out liner compromise your welds; upgrade to the L4A-15 for consistent, reliable performance.