Electric transfer boat pump (oil)
Harken

Harken 3-speed pumps push oil faster and more efficiently than other pumps on the market, reducing wasted time and energy. At preset points, the pump automatically shifts to the next speed. Shift points can be adjusted to fit crew strength and sailing style. We also make a 2-speed pump that offers the same high-strength handles, user-adjustable autoshifting, and mounting accessories.
Bolt holes in the Hardkote-anodized 6061-T6 aluminum pump housing are threaded with stainless-steel inserts to prevent corrosion around the stainless bolts. An optional adhered isolation plate improves load distribution even more by transferring torque directly to the mounting surface rather than the bolt holes. The piston shafts and rocker arms are machined from 17-4PH stainless steel.
Pumps have splined shafts to ensure a tight fit and to allow the handle to be mounted at the exact angle you choose. Standard roundtipped handles are made of knurled 6061-T6 Hardkote-anodized aluminum and fit most marine pumps. Grand Prix alternatives include carbon and knurled titanium. An optional square-tipped style allows the handle to be rocked 5 degrees laterally from the pumping direction to store against the cockpit wall.