Edelbrock #8896 Water Pump GM gen III ls1 & gen iv ls engines insert style ideal to prevent overheating in street rods and street machines, as well as in tow rigs and motorhomes. Using state-of-the-art racing technology, Edelbrock has designed these supe Product Features:Standard Impeller Rotation0.750 in. Pilot Shaft0.750 in. Ball/Ball Bearing6.00 in. Block To Hub HeightSatin Finish