Miller 288645 Replacement Handle Assembly for Hobart Spool Guns

Get a Grip: Restore Your Hobart Spool Gun

If you have been wrestling with a cracked, taped-up, or broken handle on your Hobart spool gun, it is time for a proper fix. The Miller 288645 Handle Kit is the exact replacement part you need to get your equipment back in top shape. We all know that spool guns take a beating—they get dropped, dragged, and exposed to intense heat day in and day out. Eventually, the plastic housing can crack or the screw bosses can strip out, leaving you with a wobbly tool that is hard to control. This kit solves that problem instantly, giving you a brand-new, solid grip that feels just like the day you bought the welder.

Welding aluminum with a spool gun requires finesse and steady hands. Trying to run a clean bead with a handle that is shifting around or held together with electrical tape is a recipe for frustration and bad welds. This replacement kit includes the durable plastic shell halves and fresh screws, so you can completely replace the old, worn-out exterior. The installation is straightforward: simply disassemble your current gun, transfer the internal guts—motor, trigger, and cable connections—into the new shell, and screw it shut. It is a quick DIY repair that saves you the massive cost of buying a whole new gun.

Because this is a genuine Miller/Hobart part, you don't have to worry about fitment issues. The screw holes line up perfectly, and the internal ribs are molded exactly right to hold the motor and trigger assembly securely in place. There is no modification or "making it work" required. It is designed to be a direct swap.

Don't let a broken handle slow down your fabrication projects. A solid tool is the foundation of good work, and safety is always a priority. A cracked handle can expose live electrical parts or pinch wires, creating a hazard you don't need. Swap it out with the Miller 288645 kit and get back to laying down stack-of-dimes welds with confidence and comfort.