I CHASSIS ELECTRICAL SYSTEM 2 251 SUPPORT BRACKET CLIP DEFLECTOR GROMMET RETAINER SHIELD Spark Plug Wire Con t A A I A 67 69 Ser 10 thru 30 exc D D 1 A A 4 WD 1 71 72 All Blazer 8 cyl 2977555 A R RETAINER spark plug wires rear side 67 69 G 10 20 A 68 71 Ser 10 thru 30 396 400 2977417 A R RETAINER A All All 6 cyl 3702799 A R RETAINER 3 wire ret black nylon 55 63 All 8 cyl exc 348 409 i 3719963 A R GROMMET rear upper and lower four sa holes A 57 72 All 8 cyl exc 396 400 3817657 A R A Sl lIELD Ieft rear and right front A 57 67 All 8 cyI exc 396 A T 68 72 Ser 10 thru 30 8 cyl exc A I 396 400 d 68 70 G 10 20 8 cyl 69 70 Blazer 8 cyl 3917664 A R SHIELD right rear and left front 68 72 All Blazer 8 cyl exc 396 A 400 3919807 1 SHIELD left front A 2 257 TERMINAL CLIP Spark Plug Wire 38 70 All 6 volt 200078 A R A spade end for rod Packard 208 A A A 2 240 38 70 All 6 volt 5284618 8 CL P Ahlgh tension Packard 202 2 240 2 258 NIPPLE PR OTECTOR Spark Plug Wire 38 69 All P L 5289527 A R distributor plastic 1 long A 47 57 All 5290441 1 coil 38 70 All 6 cyl 5297132 6 PROTECTOR bellows type Packard 286 2 270 PLUG Spark A 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 NOTE 1 May be used on previous models using 14MM plugs not equipped with boots RECOMMENDE D SERVICE 38 55 All A i 56 Ser 3 exc H D A A n 57 59 Ser 3 hot plug continuous city oper 62 All exc 327 409 1559494 A R normal service city type oper AC 46 14 MM Note 1 3 38 55 All A 56 Ser 3 exc H D A 57 59 Ser 3 A hot pIug continuous city oper 62 All exc 327 409 5 612390 A R normal service city type oper extended A A shield AC 46S 14 MM Note 1 41 48 All 1559459 A R A standard equip on 1946 48 pass A sustained slow speeds on trucks No M8 10 MM 49 55 l Ton H D lst Ser W A 6 A 49 55 2 Ton lst Ser 63 4 WD 261 lst Ser 5612140 A R standard normal service continuous high A speed AC 42 1 14 MM Note 1 4 9 56 All cold plug H D operation 57 60 All exc 348 60 All 283 exc F l r 63 68 Ser 10 thru 30 283 307 1559492 A R town and country AC 44 14 MM Note 1 49 59 All cold plug H D operation 60 All 283 standard plug 63 68 Ser 10 thru 30 283 307 5612386 A R town and country extended shield AC A A 44S 14 MM Note 1 49 55 2 Ton lst Ser hot plug continAuous city oper 54 55 Comm l g Ton exc H D 57 59 All V A 65 68 Ser 10 thru 30 327 5612002 A R cold plug H D operation AC 43 14 MM Note 1 I 56 59 All f A 61 All 6 cyl A 61 63 All 283 1559493 A R A A standard hot plug continuous city oper AC 45 14 MM 56 59 All 61 All 6 cyl A A 61 63 All 283 1 5612371 A R standard hot plug continuous city oper A extended shield AC 45S 14 MM 63 Ser 10 thru 30 292 35612235 A R normal service C 43AN 14 MM 63 68 All 153 194 230 250 5612630 A R standard AC 46N 14 MM 64 68 Ser 10 thruA30 292 5612791 A R normal service AC C44N 7 GM PARTS DIVISION GENERAL MOTORS CORPORATION CHEVROLET 72TL j 2 251 2 270 6 2 10 REV 5 79 I