KP21T-37 - Lincoln Electric KP21T-37 Magnum 100L Tapered Gas Nozzle 3/8-inch

Genuine Lincoln Electric KP21T-37 Gas Nozzle for Magnum 100L

Ensure your Lincoln Electric MIG welder performs at its best with the genuine KP21T-37 Fixed Gas Nozzle. Designed specifically for the widely used Magnum 100L MIG gun, this nozzle is a critical component for maintaining consistent gas shielding and weld quality. The Magnum 100L gun is standard equipment on many of Lincoln's most popular compact wire feeder welders, including the SP-series, Weld-Pak, and Power MIG 140/180 machines. Using authentic Lincoln Electric consumables ensures that your equipment operates to factory specifications, providing a reliable connection and superior arc stability.

The KP21T-37 features a 3/8-inch (9.5 mm) inner diameter, which is the standard size for general-purpose welding with smaller diameter wires (typically .023" to .030"). This bore size strikes an excellent balance between gas flow volume and velocity, ensuring the weld pool is protected from atmospheric contamination without wasting shielding gas. The nozzle is constructed from a high-quality copper alloy, offering excellent thermal conductivity to dissipate heat quickly, thereby extending the life of the consumable even during extended welding sessions.

One of the standout features of this nozzle is its tapered design. Unlike flush or cylindrical nozzles, the tapered shape narrows towards the outlet. This profile provides the welder with significantly better visibility of the contact tip and the weld puddle, which is crucial for precision work or when maneuvering the gun into tight corners and confined spaces. Whether you are performing automotive body repairs, light fabrication, or hobbyist projects, the improved sightlines help you track the joint more accurately.

Installation is straightforward with the standard thread-on interface, allowing for quick changes on the job site. The fixed recess design automatically positions the contact tip at the correct depth within the nozzle, eliminating the guesswork often associated with adjustable nozzles. This ensures consistent electrical stick-out (ESO), which is vital for maintaining a stable arc and reducing burn-back issues. Trust Josef Gas for your genuine Lincoln Electric replacement parts and keep your welding projects running smoothly.