Edelbrock 8814 Victor Series Mechanical Water Pump Extremely durable as well as efficient Provides maximum flow, maximum pressure and equal distribution to both sides of the block within 1% Includes heavy-duty roller bearing assemblies built to withstand higher torsional loads, billet steel hubs, and leak-proof seals 3.40'' from block surface to hub Unique o-ring that provides a far superior seal than conventional gaskets