KP2743-1-38F - Lincoln Magnum PRO 550A Flush Nozzle 3/8 Inch

Keep Your Cool with Magnum PRO Performance

When you are pushing 550 amps, things get hot fast. That is why you need a nozzle that can take the heat and keep on welding. The Lincoln Electric KP2743-1-38F Magnum PRO Nozzle is built for the serious welder who demands durability and performance from their gear. Designed to fit your Magnum PRO semi-automatic gun, this nozzle is rated for a massive 550 amps, ensuring it won't melt or deform when you are laying down heavy beads on thick plate. It is all about keeping you welding longer and changing parts less often.

This nozzle features a 3/8-inch ID, which is great for getting into tighter spots while still maintaining excellent gas coverage. The "flush" design means your contact tip sits right at the edge of the nozzle. Many welders prefer this setup because it gives you a clear view of the puddle without exposing the tip too much, and it makes maintaining the correct stick-out feel natural and consistent. If you are tired of guessing where your wire is or struggling with nozzles that clog up instantly, this is the upgrade you are looking for.

One of the biggest headaches in MIG welding is spatter buildup. The high-quality copper alloy used in this Lincoln nozzle is designed to dissipate heat efficiently. A cooler nozzle means spatter is less likely to stick and burn in, making it easier to clean out and keep going. Less time banging your gun against the table means more time burning wire. Whether you are in a production line or a custom fab shop, the reliability of your consumables directly impacts your paycheck and your patience.

Pair this nozzle with your standard Magnum PRO 550A contact tips and diffusers for a perfect fit. There is no wobbling or gas leaks here—just a solid, secure connection that directs your shielding gas exactly where it needs to go. Don't let cheap consumables ruin a good weld; stick with the genuine Lincoln Electric parts designed to make your Magnum PRO gun perform at its absolute best.