This super heavy duty race water pump features additional casting designs for more strength and reinforcement, plus a 3/4" fan pilot shaft and super duty bearing. It has 1/2" NPT threaded outlets on both the top and side, plus a 3/16" steel rear plate. It weighs 7-3/4 lbs. 3/4" fan snout Extra thick fan hub 3/4" ultra duty bearings Threaded for adjustable cam stop State of the art aluminum castings Equal flow to both cylinder banks Precision impeller Higher flow and pressure