258542 - Miller Jump Liner Assembly 3/64-1/16 Inch (5-Pack)

Smooth Feeding for Aluminum MIG Welding

Every welder knows that the key to a good aluminum weld starts with how well the wire feeds. The Miller 258542 Jump Liner Assembly is your solution to the common headaches associated with feeding 3/64" to 1/16" wire through the neck of your MIG gun. This specific liner section, often called a jump liner or neck liner, takes the most abuse as the wire bends and transitions towards the contact tip. Over time, it gets clogged with shavings or wears out, leading to erratic feeding, burn-backs, and the dreaded bird-nesting. This 5-pack ensures you have the spares you need to keep your torch running like new.

Designed for the professional fabricator, these jump liners are easy to swap out, getting you back under the hood in minutes. If you are running a push-pull gun or a spool gun setup compatible with these liners, you understand that a kinked or dirty liner ruins the arc. By replacing the jump liner regularly, you ensure that the wire glides with minimal friction, providing the consistent stick-out and arc control required for high-quality welds. The 0.047" to 0.062" size range covers the most common aluminum wire sizes used in structural and fabrication work.

Don't let a cheap or worn-out consumable compromise your weld integrity. Keeping a pack of Miller 258542 Jump Liners in your toolbox means you are prepared for maintenance before it becomes a problem. Whether you are welding thick plate or thin gauge aluminum, consistent wire delivery is non-negotiable. These liners provide the smooth path your wire needs to deliver a perfect bead every time.