KP2743-2-62S - Lincoln Magnum PRO 550A Slip-On Nozzle, 5/8" Bore, 1/8" Stickout

Maximize Performance with the Magnum PRO 550A Slip-On Nozzle

For professional welders running the Lincoln Magnum® PRO 550A MIG gun, the KP2743-2-62S Slip-On Nozzle is a game-changer in terms of daily usability and maintenance. When you are pushing 550 amps, heat and spatter are your biggest enemies. This nozzle is built to handle the heat and keep you welding longer. The first thing you will notice is the nickel plating. Unlike standard copper nozzles that seem to attract and hold onto spatter like a magnet, this nickel-plated version resists adhesion. When spatter does accumulate, it typically flakes off with a simple tap or a quick wipe, saving you from constantly stopping to scrape out your nozzle with pliers or a reamer.

The "slip-on" design is another feature that welders appreciate on the shop floor. We have all dealt with threaded nozzles that cross-thread or seize up after a long day of heating and cooling cycles. With the KP2743-2-62S, you simply slide it on and slide it off. It stays secure during welding thanks to a tight friction fit with the diffuser, but when it's time to swap it out or clean the diffuser, it comes off without a fight. This means faster contact tip changes and less frustration when you are in the middle of a critical job.

This specific model features a 1/8-inch stickout. This means your contact tip extends slightly past the end of the nozzle. Many welders prefer this setup for fillet welds or getting into corners because it allows you to see exactly where the wire is hitting the joint. It gives you that extra bit of visibility and access that a flush or recessed nozzle can't provide. Combined with the 5/8-inch bore, you get a perfect balance of access and gas coverage. The 5/8-inch opening is wide enough to ensure your puddle is fully shielded, preventing porosity, but not so wide that it becomes bulky or wastes gas.

Whether you are fabricating heavy structural steel, working on heavy equipment repairs, or running high-production manufacturing lines, this nozzle delivers the consistency you need. It is designed to work seamlessly with your Magnum PRO setup, ensuring that your gas flow is smooth and laminar. Don't let cheap, inferior consumables ruin your arc stability or slow you down with constant cleaning. Stick with the genuine Lincoln KP2743-2-62S for reliable, spatter-resistant performance that stands up to the heat of the job.