32 - Tweco Style 34 Insulator for No. 3 and No. 4 MIG Guns

Keep Your Tweco Gun Running Smoothly

If you're running a Tweco No. 3 or No. 4 gun, you know that the front-end consumables take a beating. The Tweco Style 34 Insulator is the part that holds it all together, sitting between your gas diffuser and your nozzle. It’s the unsung hero that keeps your nozzle from becoming electrically hot and shorting out against your work. This specific insulator is built to fit the heavy hitters—guns rated for 300 amps and 400 amps—so it’s ready for the heat of spray transfer and heavy flux-cored welding.

This insulator is designed to snap right onto your 35-50 or 52 gas diffuser. If you've ever had a nozzle wobble around or fall off because the insulator threads were shot, you know how frustrating that can be. This replacement part gives you a fresh, tight fit, keeping your nozzle centered so your shielding gas flows exactly where it needs to go. It’s made from a tough, heat-resistant material that won't crumble after a few hours of welding, giving you more arc time and less downtime fixing your gun.

Compatible with both Tweco and Lincoln Magnum 300/400 style guns, this is a smart part to keep in your toolbox. When you're swapping out a contact tip or cleaning out spatter, take a second to check your insulator. If it looks charred, cracked, or the threads are stripped, swap it out with this 34-style replacement. It’s an affordable fix that prevents bigger, more expensive problems like frying your diffuser or damaging your gun neck. Keep your arc smooth and your gun safe with this reliable insulator.

• Fits Tweco No. 3 and No. 4 guns.
• Works with 35-50 and 52 gas diffusers.
• Prevents nozzle shorts and arcing.
• Durable material stands up to high heat.