13401401 - Tweco 34FN Nozzle Insulator (Pack of 2) - 1340-1401

Keep Your Tweco Gun Running Smoothly

Every welder knows that a shorted nozzle can ruin a good bead and stop production in its tracks. The Tweco 34FN Nozzle Insulator is your first line of defense against these annoying electrical shorts. Designed specifically for Tweco No. 3 and No. 4 MIG guns, this insulator sits between your gas diffuser and the metal nozzle, ensuring that the electricity stays where it belongs—at the wire tip—and doesn't arc to the nozzle or your base metal unexpectedly.

This convenient 2-pack (Stock # 1340-1401) ensures you always have a spare in your toolbox. We've all been there: you're in the middle of a long weld, and suddenly your nozzle starts arcing out because the old insulator finally gave up the ghost. With this pack, you can swap it out in seconds and get right back to burning wire. The high-quality material resists the extreme heat of 300-400 amp welding, meaning it lasts longer and holds up better against spatter than cheap knock-offs.

Don't let a small part cause a big headache. Whether you are running a Spray Master gun or a classic Tweco whip, the 34FN is the part you need. It helps maintain smooth gas coverage by keeping everything aligned correctly inside the nozzle. If you see your current insulator looking charred, cracked, or clogged with spatter that won't scrape off, it's time to toss it and pop in a fresh 34FN. It’s a small investment that protects your gun and improves your weld quality.

Why Choose Genuine Tweco Parts?

Using genuine Tweco parts like the 34FN ensures that your equipment performs exactly as it was designed to. The fit is perfect—no rattling, no gas leaks, and no struggle to get the nozzle on. This insulator is tough, reliable, and ready for heavy daily use in the shop or on the job site.