230669 - Miller Centerfire Conversion Kit for XR-Aluma-Pro

Upgrade Your Aluma-Pro with Centerfire Performance

If you are welding aluminum with a Miller XR-Aluma-Pro push-pull gun, you know that the front-end consumables are the heartbeat of your operation. The Miller 230669 Diffuser Kit allows you to convert your gun to the Centerfire consumable system, bringing a new level of ease and performance to your daily work. We all know the frustration of dealing with threaded contact tips that get stuck, cross-threaded, or overheat during a long weld. This kit eliminates those headaches by enabling you to use Centerfire's drop-in, threadless contact tips.

The kit comes with everything you need to make the switch: the D-1AP gas diffuser and the correct head tube liners. Once installed, you will notice the difference immediately. The Centerfire diffuser is designed to lock the contact tip in place using the nozzle, which means changing a tip takes seconds and requires no tools. You just unscrew the nozzle, drop in a new tip (or rotate the existing one), and screw the nozzle back on. This design also keeps the tip much cooler because the nozzle acts as a heat sink, pulling heat away from the contact point. Cooler tips mean less spatter adhesion and fewer burn-backs, keeping you welding longer without interruption.

For aluminum welding specifically, gas coverage is everything. The D-1AP diffuser included in this kit provides a smooth, consistent flow of shielding gas that protects your puddle from contamination. The included head tube liners ensure that there are no gas leaks inside the neck of the gun, delivering 100% of your gas to the weld zone. Whether you are fabricating boat hulls, trailers, or precision aluminum structures, this upgrade makes your XR-Aluma-Pro gun more reliable and easier to maintain. You can even rotate the contact tip 360 degrees to get a fresh wear surface, effectively doubling the life of each tip. Don't let outdated consumables slow down your production—install the Miller 230669 kit and experience the smoother, cooler, and more reliable performance of Centerfire.