Utilizing Melling's "Select Performance" series of oil pumps, Manley disassembles, hand ports and blueprints each pump for optimum performance. Hi-Performance engines require Hi-Performance oil pumps and these deliver the proper oil volume and pressure with minimum parasitic horsepower loss, cavitation and oil aeration.

Hard-coat anodized CNC machined aluminum housing with a phosphate coated CNC machined cast iron cover for improved oil pump performance and durability. Pump is supplied with a high pressure by-pass spring already installed and also includes a stock pressure spring. Additional o-rings are also provided.