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 08 55 Ser 4 5 6 56 58 ALL C 43 14 MM step cold plug 5612002 A R 1 08 55 Ser 4 5 56 59 Ser 4 60 Ser 40 50 63 64 Ser 50 8 cyl AC44 14 MM standard plug 1559492 A R 1 08 55 Ser 4 5 56 59 Ser 4 60 Ser 40 50 63 64 Ser 50 8 cyl AC44S 14 MM 1 step hot plug extended shield 5612386 A R 1 08 55 Ser 4 5 exc H D 56 Ser 4 exc 8 cyl H D 57 58 Ser 4 62 Ser 40 50 LCF AC46 14 MM 3 step hot plug 1559494 A R 1 08 55 Ser 4 5 exc H D 56 Ser 4 exc 1 LD 57 58 Ser 4 62 Ser 40 S0 283 AC46S 14 lVlM 3 step hot plug extendedshield 5612390 A R 1 08 58 64 ALL 348 409 standard plug long reach water 63 Ser 50 60 292 C 42N 14 MM cooling 5612235 A R 1 08 58 59 ALL 348 1 step hot long reach water 60 61 Ser 70 80 AC 43N 14MM cooling 5612241 A R 1 08 63 64 Ser 50 230 AC 46N 14 MM standard plug 5612630 A R 1 08 64 Ser 50 60 292 AC C44N normal service 5610992 6 1 08 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 2 271 GASKET Spark Plug Seat ALL ALL A LD x 1 0 D 14 MM chrome w retention dimple 5612328 A R 01 ALL ALL 14 MM chrome less retention dimple 1556700 A R 01 2 273 WRENCH Spark Plug 55 64 ALL IMA hex 4 long 3708444 1 60 2 274 PULLEY FAN SPACER Generator Outside Shatt Groove F n Dia Dia Ne Wldth Stamped 55 57 Ser 4 6 low spd drive exc I S 60 61 Ser 40 50 60 w 35 amp L C I exc TILT 60 61 TILT w 35 amp L C I No 2 2 1 1932763 1 8 75 55 56 Ser 5 w 40 amp H D exc P S Yes 5 2 1 1933251 1 14 75 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 2 1 z 3711685 1 s 1s 55 S6 Ser 4 P S w 40 amp 8 cyl lst design n 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 LB P S Yes 4 1 1931569 1 14 35 1964 gievrolet Meter Dlvlslen Gsneml Meters Corporation 225 HDT REVISED JANUARY 1 1964