K3135-4 - Lincoln Magnum PRO 550 Dual Schedule MIG Gun 25ft

Maximize Your Welding Potential

Upgrade your welding setup with the Lincoln Electric Magnum® PRO 550 Dual Procedure Welding Gun. With a generous 25-foot cable, this gun gives you the reach you need for large-scale projects. It is built to handle the heat, boasting a massive 550A rating at 100% duty cycle when using CO2 gas. Whether you are running flux-cored wire or solid MIG wire, the K3135-4 is the reliable partner you need for continuous, high-amperage welding.

Comfort Meets Control

Welding all day can be tough, but the Magnum PRO 550 makes it easier with its Comfort Grip™ design. The barrel-style handle is ergonomically balanced to sit comfortably in your hand, reducing strain and fatigue. More importantly, this "Dual Procedure" model puts control at your fingertips. The integrated switch allows you to toggle between two pre-set welding procedures on compatible feeders, letting you adapt to changing joint conditions instantly without stopping work.

Built to Last

Lincoln Electric has equipped this gun with features that save you money and time. The Copper Plus® contact tips are designed with extra mass to disperse heat more effectively, meaning you burn through fewer tips. The Anti-Seize™ threads on the diffuser and tip ensure that when it is time to swap consumables, they come off easily—no seized parts or stripped threads. From the secure gun tube to the rugged cable liner, every part of the Magnum PRO 550 is built for the long haul.

Key Features

• 100% Duty Cycle: Weld continuously at 550A (CO2) or 375A (Mixed Gas).
• Dual Schedule: 4-pin trigger connection for switching weld settings.
• Wide Wire Range: Compatible with wire diameters from 0.035" up to 1/8".
• Industrial Grade: Perfect for heavy fabrication, construction, and shipbuilding.