L A/T AND T/E-AIR PUMP TYPE , MOTORCRAFT PART NUMBERS DY-184C & DY-184CDP WITH ENGINEERING NO. STAMPED E8PF 12A199-AB ARE TO BE USED ON 4, 6 & 8 CYL. APPLS. PARTS WITH ENGINEERING NO. STAMPED E8PF 12A199-AA ARE USED ONLY ON 4 & 6 APPLS.
L M/T , MOTORCRAFT PART NUMBERS DY-184C & DY-184CDP WITH ENGINEERING NO. STAMPED E8PF 12A199-AB ARE TO BE USED ON 4, 6 & 8 CYL. APPLS. PARTS WITH ENGINEERING NO. STAMPED E8PF 12A199-AA ARE USED ONLY ON 4 & 6 APPLS.