Calibration:3-68X-R10

MODEL YEAR: 1984 (Model 155) TRUCK ENGINE: 6.9L
*F 250 HEAVY DUTY AND F 350 (MANUAL OR AUTOMATIC TRANSMISSION)

*E 250 HEAVY DUTY AND E 350 (AUTOMATIC TRANSMISSION ONLY)

*HOLE PUNCH DESIGNATES MODEL, YEAR, AND MONTH

*FOR ENGINES BUILT PRIOR TO JANUARY 1,1984