2 261 NUT Spark Plug Cover 56 59 ALL 322 to cyl head hex SA 24 thds 1345429 4 0 416 2 270 PLUG Spark TYPE RECOMMENDED SERVICE 55 Ser 6 56 58 ALL 59 ALL exc 348 60 62 Ser 60 exc 348 63 64 Ser 60 327 AC 42 1 14 MM standard plug 5612140 A R 1 00 S5 Ser 4 5 6 56 58 ALL 64 65 Ser 60 327 C 43 14 MM A step cold plug 5612002 A R 1 00 55 Ser 4 5 56 59 Ser 4 60 Ser 40 50 63 66 Ser 50 8 cyl AC 44 14 MM standard plug 1559492 A R 1 00 55 Ser 4 5 56 59 Ser 4 60 Ser 40 50 63 66 Ser S0 8 cyl AC 44S 14 MM 1 step hot plug extended shield 5612386 A R 1 00 55 Ser 4 5 exc H D S6 Ser 4 exc 8 cyl H D S7 58 Ser 4 62 Ser 40 50 LCF AC46 14 MM 3 step hot plug 1559494 A R 1 00 55 Ser 4 5 exc H D 56 Ser 4 exc 1 LD 57 58 Ser 4 62 Ser 40 SO 283 AC46S 14 MM 3 step hot plug extended shield 5612390 A R 1 00 58 66 ALL 348 366 409 standard plug V long reach water 63 Ser 50 60 292 C 42N 14 MM cooling 5612235 A R 1 00 58 59 ALL 348 1 step hot Y long reach water 60 61 Ser 70 80 AC 43N 14MM cooling 5612241 A R 1 00 63 66 Ser 50 230 250 AC 46N 14 MM standard plug 5612630 A R 1 00 64 66 Ser 50 60 292 AC C44N normal service 5612791 A R 1 00 When individual driving conditions warrant different heat range plugs may be used by selecting higher type Nos for hotter and lower type Nos for colder plugs as necessary 2 27 GASKET Spark Plug Seat ALL ALL A6 LD x 2 O D 14 MM chrome w retention dimple 5612328 A R 01 ALL ALL 14 MM chrome less retention dimple 1555475 A R 01 2 273 WRENCH Spark Plug 55 66 ALL X6 hex 4 A long 3708444 1 60 2 274 PULLEY FAN SPACER Generator Outside Shaft Groove Fan Dia Dia No Width Stamped 55 57 Ser 4 6 low spd drive exc P S 60 61 Ser 40 50 60 w 35 amp L C I exc TILT 60 61 TILT w 35 amp L c 1 N6 2 1 z 1932763 1 9 50 55 57 Ser 4 P S w 30 35 amp 12 volt 55 57 Ser 5 6 7 8 P S w 30 amp 6 cyl Yes 4 M 1 4 3711685 1 3 06 55 56 Ser 4 P S w 40 amp 8 cyl lst design 55 57 Ser 6 P S w 40 amp 56 Ser 5 8 P S w 40 amp 57 Ser 4 5 7 P S w 40 amp 8 cyl 57 Ser 8 40 amp w A O l I B P S Yes 4 1 Z 1931569 1 14 35 1966 Chevrolet Motor Division General Motors Corporation 203 HDT REVISED MARCH i i966