14-45 - Tweco Style 14-45 Contact Tip for .045 Wire - Heavy Duty Replacement

Keep Your MIG Gun Running Smoothly

Every welder knows that the contact tip is the heart of the MIG gun. It takes the most abuse, dealing with intense heat, electrical current, and the constant friction of moving wire. When your tip wears out, your arc starts to wander, spatter increases, and you end up fighting the machine instead of laying down beads. The Tweco Style 14-45 Contact Tip is your reliable solution for getting back to smooth, consistent welding. Designed for .045" wire, this tip is built to handle the heat of long welds and high amperage.

Whether you are running a classic Tweco gun or a Lincoln Magnum, this tip fits right in. It is compatible with the popular Tweco #2, #3, and #4 guns, as well as the Spray Master series. If you are using a Lincoln Magnum 250 or 400, this 14-series tip is likely the exact part you need to keep your setup running. The threaded design makes changing tips quick and easy—just unscrew the old one and twist this one in. No need to struggle with loose connections or poor fitment.

Why choose this contact tip? It comes down to performance and value. You get a heavy-duty copper alloy tip that conducts electricity efficiently, ensuring a crisp arc start every time. The bore is machined smoothly to prevent wire shaving and clogging, which are common causes of bird-nesting at the drive rolls. By maintaining a tight tolerance on the inside diameter, this tip ensures the wire makes good electrical contact right at the end of the gun, giving you better control over the puddle.

Don't let a five-dollar part ruin a thousand-dollar project. Keep a fresh supply of 14-45 tips in your toolbox. Whether you are fabricating structural steel, repairing heavy equipment, or doing production MIG work, these tips deliver the consistency you need. They are rated for up to 400 amps, so you can crank up the heat for spray transfer or heavy-plate welding without worrying about the tip melting down prematurely. Swap out your worn tip today and feel the difference in your arc.