10 secrion 93 1973 7 9 TRUCK SERIES 100 500 ENGINE YEAR MODEL RESTRICTIONS CYL C I D PART NUMBER DESCRIPTION QTY C C D 9F424 VALVE ASSY EXHAUST GAS RECIRCULATION VACUUM LOAD CONTROL 74 F100 C4 with T E E 302 D4TZ 9F424 B D4TE 9F424 AB nylon 1 From Ser TOO 0O1 74 F100 C4 with T E E 302 D4TZ 9F424 A D4TE 9F424 AA nylon 1 Before Ser TOO 001 77 E1s0 350 Calif emission 8 351W D6AZ 9F424 A 06 E 7F424 A1A 1 400 77 F150 350 B 351M 1 77 F150 350 exc Calif 8 400 1 emission 78 E350 A T CaIif emission 8 351W 1 78 F150 350 8 400W 1 78 F150 250 4 W D exc Calif 8 40OC 1 emission 79 E350 8 351W 1 77 F100 M T exe Calif 8 351M D7DZ 9F424 B D6BE 7F424 B1A B2A 1 emission 77 F100 A T Calif emission 8 351M 1 77 F100 A T exc Calif 8 400 1 emission 77 F100 A T Canada 8 351M 1 78 F100 8 351M 1 78 F100 8 400 1 78 F150 250 A T Calif 8 51M 400 1 emission 79 F100 350 8 351M 1 400 78 E150 350 F250 350 300 D8TZ 9F424 A D8TE 9F424 A2A 1 Calif emission 79 E F350 Calif emission 300 1 9426 Refer to group 9430 9A427 VALVE ASSY EXHAUST CONTROL Also refer to rou 9A435 73 74 moo II aeiiaso nm 9A427 A 1 74 E100 300 F100 with T E n 302 D4TZ 9A427 C Not re laced 1 74 F100 M T with 3 50 1 axle n 360 D4TZ 9A427 D Not re laced 1 75 76 F100 8 390 D5TZ 9A427 A D5TE 9A427 AA 1 75 76 F100 Before Ser A50 000 8 360 1 76 F100 exc A T with 4 W D and 8 360 1 without Calif emission 75 F100 8 302 D5TZ 9A427 B D5TE 9A427 BA 1 76 F100 M T 8 302 1 76 F100 A T Before Ser A50 000 8 302 1 77 F100 Calif emission 8 302 1 75 76 E100 n 351w D50Z 9A427 A D5OE 9A427 AA 1