15001100 - Tweco 35-50 Gas Diffuser for No. 3 & 4 MIG Guns (5-Pack)

Keep Your Arc Smooth and Your Gun Running

Every welder knows that the front-end consumables of a MIG gun take the most abuse. Heat, spatter, and constant thermal cycling can wear out even the toughest parts. The Tweco 35-50 Gas Diffuser is the heart of your Tweco No. 3 or No. 4 MIG gun, and keeping a fresh one installed is key to maintaining a stable arc. If you are experiencing erratic wire feeding, inconsistent electrical contact, or gas coverage issues, a worn-out diffuser is often the culprit.

This pack of 5 ensures you have the spares you need right in your toolbox. The 35-50 is the standard brass diffuser that screws onto the neck of your gun. It holds your contact tip in place and directs the shielding gas out to the nozzle. Over time, the gas holes can get clogged with spatter, or the threads can get stripped from frequent tip changes. Using a fresh, genuine Tweco diffuser ensures your contact tip seats perfectly, giving you the best electrical connection possible. This translates to less burn-back, fewer arc starts failures, and better-looking welds.

Designed for the classic "slip-on" nozzle setup, this diffuser works perfectly with the 34A insulator. It’s built tough to handle the heat of 300 to 400 amp welding all day long. Whether you are fabricating structural steel, repairing heavy equipment, or running a production line, relying on genuine Tweco parts means less downtime troubleshooting your gun and more time burning wire. Don't let a $5 part hold up a $5000 job—swap out your old, battered diffuser with a crisp new 35-50.

Why Choose Genuine Tweco?

• Perfect Fit: No struggling with cross-threaded tips or loose nozzles.
• Better Gas Coverage: Clean ports mean no porosity in your welds.
• Durability: Stands up to the heat of high-amperage spray transfer.
• Value: This 5-pack keeps your shop stocked and ready.