Description Specifications Interchange Pulley, P/S Pump, LS Corvette style steel P/S pump pulley with 6.70" overall OD and 0.66" shaft bore. Works with Holley P/N 198-100 and similar P/S pumps with a 0.66 shaft. OD to Grooves = 6.35" OD Overall = 6.70" Package information Extended Package information Interchange Not Available