1560-1136 - Tweco 54-16 Gas Diffuser for Spray Master 350/450 MIG Guns

Restore Peak Performance to Your Spray Master MIG Gun

If you are running a Tweco Spray Master 350 or 450, you know these guns are workhorses. However, even the toughest guns need fresh front-end parts to keep the arc smooth. The Tweco 54-16 Gas Diffuser is the genuine replacement part you need to keep your gun firing correctly. As the anchor for your contact tip, the diffuser takes a beating from heat and spatter. A worn-out diffuser can lead to poor electrical contact, erratic arcs, and turbulent gas coverage that ruins your welds.

Built from heavy-duty brass, this OEM diffuser handles the heat of high-amperage spray transfer and pulsed MIG welding without deforming or seizing. It is designed to perfectly mate with Tweco 14 Series contact tips, ensuring the tip sits concentric with the nozzle for optimal wire placement. The gas holes are drilled—not just cast—to ensure shielding gas flows out smoothly and evenly, giving you that clean, soot-free bead appearance you strive for.

Don't struggle with cross-threaded tips or mysterious gas coverage issues caused by cheap knock-offs. The 54-16 threads on cleanly to your conductor tube and holds your consumables tight. Whether you are fabricating structural steel, repairing heavy equipment, or working in a production line, swapping in a fresh 54-16 diffuser is a quick and easy way to troubleshoot arc issues and get back to laying down perfect beads.

Why Welders Choose the Tweco 54-16:

• Perfect Fit: No fighting with threads; it screws right onto Spray Master necks.
• Better Arc: Solid brass construction means consistent voltage at the tip.
• Clean Welds: smooth gas flow reduces porosity and spatter.
• Durability: Stands up to the heat of 350A+ welding all day long.