Peterson Fluid Systems dry sump pumps utilize a revolutionary twisted lobe rotor design. This design has allowed us to use all alumionum rotors in all sections saving a huge amount of weight while also increasing performance. The internal scavenge manifold and shallow depth screw in fittings make for a low profile, modular pump which is available with 3 to 6 stages standard. Pumps can be outfitted with numerous options as well to be suited to a variety if applications and comes standard with a rear drive setup for all popular drive accessories. Note: Stages refer to total number of pumping bodies which include (1) pressure section. i.e A 4 stage pump includes (1) pressure section and (3) scavenge sections.