Power your water-tank setup with the 4000 PSI Gravity Feed Pump, engineered to draw water from a gravity-fed source while delivering the heavy-duty pressure your toughest jobs demand. Gravity feed designs are ideal for mobile detailing rigs and operations that supply their own water, giving you the freedom to work anywhere without relying on a pressurized supply. With its high pressure rating, this pump makes quick work of stubborn road grime, grease, and caked-on buildup across vehicles, equipment, and hard surfaces. Whether you are building a custom mobile rig or replacing a worn-out unit, choosing a quality pump keeps your workflow smooth and your cleaning results consistent. Matching the right pump to your setup ensures dependable, long-lasting performance in the field. Pair it with quality RCP hoses, quick-connect tips, and accessories to complete a rugged, professional pressure-washing system.