Pressure Washer Aluminum Frame - The Challenger Cold Water Series combines portability, durability and power to handle the most demanding jobs. Powered by a GX390 Honda engine this unit produces 4 GPM @ 4000 PSI. The aluminum frame is lightweight and corrosion resistant and features solid flat free tires allowing for easy portability. Cold water pressure washer models provide you a FREE: industrial hose with a swivel end and bend restrictor, professional-grade insulated trigger gun with safety lock, insulated wand for user safety, and quick connect nozzle. Along with all that Alkota provides a thermal protector valve to help you protect your investment against overheating the pump. With the support of your local Alkota dealer we can find the correct solution for you.