Billet Aluminum Buick Water Pump Pulley (1970-1976) 2 Groove Water Pump Pulley for Buick 455 Engines with Long Water Pump. Designed for use with stock power steering and alternator brackets. APPLICATION ---Buick 455 engines 1970 - 1976 FITS VEHICLES WITH: ---Long Water Pump Diameter: 6.7" Overall Length: 2.85" Grooves: 2 Bolt Pattern: 4 Bolt Bolt Circle: 1.75" Pilot Diameter: 5/8".
