Lincoln Magnum 400 GMAW/FCAW 0.6-0.9mm 4.5m Tweco Connector gun- K471-21

Lincoln Magnum® 400 MIG Welding Gun – 4.5m, 400A @ 60% (SKU: K471-21)

The Lincoln Magnum® 400 MIG Gun is a heavy-duty welding torch engineered for high-amperage MIG and flux-cored welding applications where heat control, durability, and operator comfort are essential. Designed to perform reliably under demanding conditions, this torch delivers consistent results when welding with both gas-shielded GMAW and self-shielded FCAW wires.

Built to handle the increased thermal load generated during high-current welding, the Magnum 400 features an ergonomic handle design that improves comfort and control during extended welding sessions. Rated at 400 amps at a 60% duty cycle using CO₂, it is ideally suited to industrial fabrication, structural welding, and production environments.

This complete torch package includes the K466-2 adaptor, allowing direct connection to Tweco®-style wire feeders, making it a versatile replacement or upgrade option across a wide range of MIG welding machines.

Key Features & Benefits

• 400A @ 60% duty cycle (CO₂) – ideal for heavy-duty welding

• Designed for high-heat applications – reliable performance under load

• Suitable for GMAW and FCAW welding processes

• Ergonomic handle design – enhanced operator comfort and control

• Tweco®-style connector compatibility – flexible machine fitment

• Supplied with K466-2 adaptor – ready to install

• Durable construction – built for industrial use

Technical Specifications

• Product Type: MIG Welding Gun / Torch

• Brand: Lincoln Electric

• Model: Magnum® 400

• Rated Amperage: 400A @ 60% Duty Cycle

• Shielding Gas: CO₂

• Welding Processes: GMAW (MIG), FCAW

• Connector Type: Tweco® style

• Wire Size (Standard Liner): 0.6 – 0.9 mm

• Cable Length: 4.5 metres

Part Number

• SKU / Part No.: K471-21