16401111 - Tweco 64A-45 Conductor Tube 45 Degree for Spray Master

Restore Your Spray Master's Performance

Is your Tweco Spray Master MIG gun sputtering or feeding wire inconsistently? The problem might be in the neck. The Tweco 1640-1111 (64A-45) is the genuine replacement conductor tube you need to get your 350A or 450A Spray Master gun running like new again. Over time, conductor tubes can become bent, clogged with spatter, or internally worn, leading to poor conductivity and frustrating wire feed issues. Swapping out a damaged neck is one of the fastest ways to improve arc stability and weld quality.

This conductor tube features a classic 45-degree bend, which is the go-to angle for most general fabrication work. It provides a natural hand position that reduces wrist strain during long shifts while still allowing you to reach into corners and tight spaces. The heavy-duty copper construction handles the heat of high-amperage spray transfer welding, ensuring that the current gets to the contact tip efficiently. The rugged outer insulation stands up to the abuse of the shop floor, protecting the neck from shorts if you accidentally rest it on the table or the part.

Installation is straightforward. Simply disconnect your old tube from the handle, transfer your diffuser and nozzle (or install new ones), and thread the new 64A-45 into place. A fresh conductor tube not only improves electrical transfer but also provides a smooth path for the liner and wire, eliminating those annoying hitches and burns back. Whether you are welding structural steel, heavy equipment, or production parts, relying on genuine Tweco components ensures your equipment performs to the manufacturer's specifications. Keep a spare 1640-1111 in your tool crib to minimize downtime and keep the sparks flying.