Miller Radiator Filler Neck and 14lb Cap Assembly

Keep Your Miller Cooler Running with the 245043 Filler Neck

If your Miller water cooler is leaking coolant or struggling to keep your torch cool, the problem might be right at the top of the tank. The Miller 245043 Filler Neck and Radiator Assembly is the genuine replacement part you need to fix leaks and maintain proper pressure in your welding machine's cooling system. Over time, filler necks can crack from vibration, and radiator caps can lose their spring tension, leading to coolant evaporation and overheating.

This kit is a complete solution that comes with both the filler neck and a fresh 14 lb pressure cap. The pressure cap is a vital safety feature for your water cooler. It keeps the system pressurized to 14 lbs, which stops your coolant from boiling when you are welding at high amperages for long periods. If your old cap isn't holding pressure, your coolant can boil over, potentially burning out your expensive TIG torch or MIG gun. Replacing the entire assembly ensures you have a fresh, clean sealing surface and a cap that works exactly as the factory intended.

Don't risk your equipment with makeshift repairs or generic automotive parts that might not fit correctly. This is an authentic Miller Electric part, meaning it is built to the exact specifications of your machine. It installs directly into place, making it a straightforward repair for anyone comfortable with basic maintenance. Whether you are refurbishing an older Coolmate unit or fixing a damaged radiator neck, this part gets your cooling system back to 100% efficiency.

Why replace the whole assembly? Often, if the cap is bad, the neck sealing surface might also be corroded or damaged. Changing both at the same time guarantees a leak-free seal. Keep your focus on the weld puddle, not on the temperature gauge, by ensuring your cooling system is sealed and pressurized correctly with this Miller OEM replacement.