Jabsco HotShot HD4 12V 4GPM 60PSI Marine Washdown Pump Kit. Co-molded diaphragm technology ensures long life and durability. Long life at high pressures with our HD models thanks to their heavy-duty motors and cast aluminum lower housings. Dampening mounting feet means efficient and quiet operation with lessened vibration. Integrated, sealed pressure switch for on-demand operation. Versatile installation due to self-priming capability. Able to run dry without damage. Quick-connect ports make for easy installation and servicing.