Tweco Spray Master Body Insulator and Screw Kit

Restore Your MIG Gun's Safety and Performance

Keep your Tweco Spray Master MIG gun running like new with the 9910-2403 Body Insulator and Screw kit. As any experienced welder knows, the equipment you hold in your hand is your livelihood, and keeping it in top shape is non-negotiable. Over time, the heat, drops, and daily abuse of the shop floor can take a toll on the internal components of your torch. The body insulator is one of those hidden heroes that keeps you safe by ensuring the welding current goes into the wire and not through the handle. If your current insulator is cracked, worn, or missing, you are risking shocks and poor weld quality.

This kit is the genuine article—a direct replacement from Tweco designed specifically for the Spray Master line, including the popular MS250, MS350, and MS450 models. Because it is an OEM part, you don't have to worry about it not fitting or needing to modify your gun to make it work. It drops right into place, and the included screw ensures it stays there. The high-quality material is built to resist the high temperatures of MIG welding, meaning it won't melt or deform when you are running long beads at high amperage.

Maintenance shouldn't be a headache, and with the 9910-2403, it isn't. Swapping out a damaged insulator is a quick job that can save you from costly downtime later. A loose or broken insulator can cause the whole handle assembly to feel sloppy, affecting your aim and control. By refreshing this part, you restore that solid, reliable feel you expect from a Tweco gun. We recommend keeping a spare kit in your toolbox or maintenance locker so that if a breakdown happens, you can fix it on the spot and get back to burning wire immediately. Don't compromise your safety or your work with generic parts; stick with Tweco for reliability you can trust.