The Aeroflow Performance brushless electric water pump is designed for universal fitment to compliment or replace a vehicle's existing mechanical belt-driven water pump. This brushless design is a magnetically driven water pump which allows high flow of up to 46.6 Litres Per Minute with the larger 1 inch (25.4mm ) barb and 40 Litre Per Minute on the smaller 3/4 Inch ( 19.05mm ) barb. Being a brushless design it has no brushes to ever wear out and the pump is magnetically driven by the motor, which means that no shaft sealing is required. Pump Diamentions: Overall Height: 96mm Pump Diameter: 60mm Overall Length: 123mm Mounting Bolt Centre: 77mm