K4651-040 - Lincoln Magnum PRO HyperFill Gun .040 Water Cooled FM

Weld Faster and Smoother with HyperFill

If you are looking to lay down serious metal without fighting a violent arc, the Lincoln Electric K4651-040 HyperFill Gun is your solution. This isn't just another MIG gun; it is the handheld component of Lincoln's game-changing HyperFill technology. Imagine running two .040" wires at the same time, creating a wide, smooth puddle that wets out perfectly. That is what this gun delivers. It feels and handles like a standard heavy-duty MIG gun, but the productivity gains are massive. You get the deposition rates of a large wire core without the difficult puddle control.

This "One-Pak" comes ready to rock with the Fast-Mate (FM) connection, making it a snap to hook up to compatible feeders. Because it is water-cooled, the handle stays cool even when you are pushing 500 amps all day long, keeping you comfortable under the hood. The dual-wire setup creates a softer arc that significantly reduces spatter, meaning less cleanup time for you and better-looking welds right out of the gate.

Built for the Shop

Lincoln knows that industrial environments are tough on gear. The K4651-040 is built with a rugged over-molded handle and strain relief to withstand drops, drags, and daily abuse. The consumables are designed to last, so you spend more time welding and less time changing tips. Whether you are welding heavy structural steel or thick plate fabrication, this gun gives you the power to get the job done faster and with higher quality results.