15401128 - Tweco 54-16 Gas Diffuser for No. 4 & 5 MIG Guns (5-Pack)

Reliable Performance with Tweco 54-16 Diffusers

Keep your MIG torch running smoothly with the Tweco 54-16 Gas Diffuser. As any experienced welder knows, the front-end consumables of your MIG gun are the lifeline of your weld quality. A worn or clogged diffuser can lead to erratic gas coverage, porosity, and overheating contact tips. The Tweco 54-16 is the industry-standard replacement for Tweco No. 4 and No. 5 MIG guns, offering the durability and precision you need for heavy structural welding and fabrication.

Built from solid brass, this diffuser does more than just hold your contact tip. It acts as a heat sink, drawing intense heat away from the arc zone to prevent your contact tips from softening and failing prematurely. The gas ports are engineered to smooth out the flow of shielding gas, creating a stable envelope around your puddle even when welding at high amperages. This means less spatter, cleaner welds, and less downtime troubleshooting gas issues.

Changing consumables is quick and easy. The 54-16 accepts standard 14 Series contact tips with a 3/8"-24 thread—the heavy-duty tips you likely already have in your shop. It is also designed for slip-on nozzles (24 Series), allowing you to pull the nozzle off quickly to clean out spatter or replace the tip without needing extra tools. Whether you are running a Spray Master 450 or a classic Tweco #4, these diffusers are essential for maintaining consistent arc performance.

This pack includes five diffusers, ensuring you have spares on hand when you need them. Don't let a $10 part ruin a critical weld; keep your torch maintained with genuine Tweco brass diffusers.