1957 Cadillac Rebuilt Water Pump, ONE YEAR WARRANTY. GM Part Number 3630893 Group 1.069 Fits the Following; 1957 Cadillac ALL, and 1957 and 1958 Cadillac Brougham. Please Specify AC car OR Non AC Car.  PUMP is $195.00 plus a $150.00 Core Charge. Core charge will be returned when you return your old rebuildable pump to us.