16 SECTION 180 1973 79 TRUCK SERIES 100 500 YEAR MODEL RESTRICTIONS PART NUMBER TYPE DESCRIPTION TY 18599 ELBOW HOT WATER HEATER and AIR CONDITIONER CONNECTION Also refer to rou s 79A455 or 18663 73 All 8A 18599 16 45 3 8 18 5 8 hose connection 1 73 76 E100 350 F100 150 6 cyl DBTZ 18599 A 2 Y shaped 3 8 18 eng conn 5 8 1 240 w 125 power vacuum hose conn 3 8 18 female thread l source 75 76 B F500 E F100 350 P350 500 1 73 E100 350 8 c I 351 DOAZ 18599 A 16 90 1 2 14 en conn 5 8 hose conn 1 74 76 E100 350 8 cyl 302 Calif D4UZ 18599 A 3 30 3 8 18 eng conn 1 2 hose conn 1 Not re laced 75 E100 8 cyl 351 D4TZ 18599 C 12 T shaped 1 1 4 hose conn 2 5 8 hose conn 1 74 F100 8 c I 302 Calif I 75 E10O 8 cyl 351 D5OZ 18599 A 11 90 3 8 18 eng conn 3 8 18 female 1 L tube conn 1 4 hose conn 79 E100 350 8 c l 351W D9SZ 18599 A n 6 1l 2 male conn x 3 B female conn x 15 16 hose conn 1 73 I F100 A A 2 W D 8 cyl 302 351 D30Z 18599 A 14 90 3 8 18 ehg eehh 2 ew 1e female 1 tube conn 5 8 hose conn 75 77 F100 8 cyl 360 U S only D5TZ 18599 8 5 90 3 8 18 eng conn 2 3 18 18 female 1 75 77 F150 350 8 c l 360 Not re aced 2 81 tube conn 1 5 8 hose conn 1 73 F100 350 8 c l 360 390 8M 18599 E StraI ht 3 8 18 en conn 1 2 hose conn 1 74 F100 150 8 cyl 302 Calif D4TZ 18599 8 10 90 3 8 18 eng conn 2 3 8 18 female tube 1 conn 1 1 4 hose conn 74 F100 350 8 cyl 460 D1AZ 18599 A 13 90 1 2 14 eng conn 5 8 hose conn 1 73 76 lVl450 500 8 cl 460 1 73 F100 250 8 cyl 360 390 built DZTZ 18599 A 15 45 3 8 18 eng conn 3 8 18 female tube 1 in A C dealer installed conn 74 F100 150 8 cyl 302 Calif D4TZ 18599 A 15 90 3 8 18 eng conn 3 8 18 female 1 tube conn 5 8 hose conn 74 E200 250 8 cyl 302 under 6M G V W C6AZ 18599 B 16 90 1 2 14 eng conn 5 8 hose conn 1 76 E350 89 8 c I 302 1 73 75 P100 350 8 cyl 360 390 w 0 DOAZ 18599 A 16 90 1 2 14 eng conn 5 8 hose conn 1 ev em 74 F100 350 8 c I 360 390 C1AF 18599 A 18 90 3 8 18 en conn 5 8 hose conn 1 73 76 M450 500 8 cyl 460 D3VZ 18599 A 11 90 1 2 14 eng conn 1 2 14 female 1 T conn 5 B hose conn 73 76 M450 500 8 cyl 361 D1TZ 18599 A 2 90 push In type 3 4 eng conn 1 3 4 hose conn 79 E100 350 8 cyl 300 EZTZ 18599 A 14 90 5 8 hose conn x 3 8 engine conn x 1 Q F100 350 8 c I 300 3 8 female conn to EGR control valve 79 E100 350 8 c I 400 D9UZ 18599 A 1 1 2 i e x 5 8 hose 1 YEAR MODEL RESTRICTIONS PART NUMBER DESCRIPTION TY 188604 WIRING ASSY HEATER CONTROL 75 79 E100 350 W malh heater osuz 18B604 A 1 onl Before Ser EE0 OO1 Not re laced 79 E100 350 w main heater D9UZ 18B604 A 1 onl From Ser EE0 OO1 Not re laced 75 78 e1oo 250 vv mash and DSUZ 188604 B 1 aux heater Before Ser CE0 001 Not re laced 78 E100 350 w main and DBUZ 18B604 A 1 aux heater From Ser CEO 001 Not re laced 18C615 BRACKET HEATER BLOWER MOTOR MOUNTING V 73 74 E100 300 w aux heater C8UZ 18C615 A 1 18C617 WIRING ASSY BACK WINDOW HEAT CONTROL 77 7a F100 350 D7TZ 180617 A Not re laced 1 18C621 SWITCH LIGHT ASSY BACK WINDOW HEATER 77 F100 350 vv heated h llte D7TZ 18578 A 1 18C622 LAMP ASSY BACK WINDOW HEAT CONTROL WARNING 77 78 F100 350 wz 18c 22 A 1 79 E100 300 Used As A DZOZ 18C622 A 1 I Premium Sound System Warnin Lam 18623 BRACKET BACK WINDOW HEAT CONTROL MOUNTING 77 F100 350 D7TZ 18623 A Not re laced 1 78 F100 350 DSTZ 18623 A 1 W