K3423-4 - Lincoln Magnum PRO AL G450W Water-Cooled Push-Pull Gun, 50ft, 7-Pin

Industrial Aluminum Welding Solution

The Lincoln Electric Magnum® PRO AL G450W (K3423-4) is a premium water-cooled push-pull MIG gun engineered specifically to address the challenges of feeding aluminum wire in industrial environments. Aluminum wire is soft and prone to buckling (birdnesting) when pushed over long distances. The G450W utilizes a sophisticated push-pull system where a motor in the gun handle pulls the wire while the feeder pushes it, ensuring smooth, consistent delivery even through the extended 50-foot (15.2 m) cable assembly. This specific model is rated for 450 Amps at 100% duty cycle, making it ideal for heavy-duty fabrication requiring high heat input and continuous welding.

Magnum® PRO Consumable Technology

This gun is built to utilize Lincoln's Magnum® PRO consumables, which are designed to lower operating costs and increase productivity. The Copper Plus® contact tips feature a larger mass and diameter, providing superior heat dissipation. This keeps the tip cooler, prevents wire burn-back, and significantly extends the life of the consumable compared to standard tips. The anti-seize threads on the contact tips and diffusers prevent fusing, making changeovers quick and tool-free.

Optimized for Operator & Maintenance

The G450W features an ergonomic handle with a front trigger configuration, balancing weight and comfort to reduce operator fatigue during long shifts. Maintenance is streamlined with a quick-change liner system that allows the liner to be replaced without removing the gun from the feeder. The 7-pin connector ensures seamless integration with compatible Lincoln Electric wire feeders, providing reliable communication for trigger and motor control. Whether for shipbuilding, trailer manufacturing, or automotive applications, the K3423-4 delivers the reach, cooling capacity, and feeding reliability required for professional aluminum welding.