Group Effective Serial Number Engine Serial Number Model Engine Model Date Description of change Source Page Implied Notes "21,22" 13453 CJ2A Semi floating rear axle from full floating 1965 Universal Dispatcher Service Manual 214 lube chart p10 shows serial number 13413 "17,18" 24196 CJ2A Drilled passages between transmission and transfer case for oil circulation 1965 Universal Dispatcher "14,184" 10 50705 L4 "Piston head thickness from 3/16 to 1/4""" 1965 Universal Dispatcher Service Manual 33 10 3J161344 L4 Hardened exhaust valve seat inserts installed 1965 Universal Dispatcher Service Manual 41 also replacement CJ2A engine serial number RJ-297362 10 44417 L4 oil pump type change from planetary gear to internal rotor 1965 Universal Dispatcher Service Manual 43 10 3J-166871 L4 "timing gear oil jet from .070 to .040""" 1965 Universal Dispatcher Service Manual 49 10 175403 CJ2A L4 flywheel timing mark notations changed 1965 Universal Dispatcher Service Manual 51 10 130859 CJ3A L4 timing marks moved to timing gear cover from flywheel 1965 Universal Dispatcher Service Manual 51 15 30973 130859 CJ3A L4 "4-1/2"" starter motor (larger) floor mount foot starter switch" 1965 Universal Dispatcher Service Manual "51,151,155" 10 130859 CJ3A L4 wider cylinder block flange (at previous timing hole location) 1965 Universal Dispatcher Service Manual 51 10 All DJ3A L4 timing marks on timing gear cover 1965 Universal Dispatcher Service Manual 51 10 4J200614 F4 Hardened exhaust valve seat inserts installed 1965 Universal Dispatcher Service Manual 75 10 F4 "with 4-1/2"" starter new flywheel housing, rear eng plate and ring gear required" 1965 Universal Dispatcher Service Manual 80 10 F4 tapered flywheel attaching bolts replaced with straignt (drill out tapered holes) 1965 Universal Dispatcher Service Manual 82 10 4J250095 F4 "timing gear oil jet from .070 to .040""" 1965 Universal Dispatcher Service Manual 84 12 43965 CJ3B 57348 "fuel tank wider, hold-down strap longer" 1965 Universal Dispatcher Service Manual 109 12 77001 CJ5 57548 "fuel tank wider, hold-down strap longer" 1965 Universal Dispatcher Service Manual 109 12 14359 CJ6 57748 "fuel tank wider, hold-down strap longer" 1965 Universal Dispatcher Service Manual 109 12 77983 CJ5 57548 "fuel tank wider, hold-down strap longer" 1965 Universal Dispatcher Service Manual 109 15 1954 start of production a few Delco-Remy starter and distributors were used 1965 Universal Dispatcher Service Manual 122 15 35523 CJ3B "key start, combinded gauges, 12v" 1965 Universal Dispatcher Service Manual 126 TRUE from schematics 15 49249 CJ5 "key start, 12v" 1965 Universal Dispatcher Service Manual 128 TRUE from schematics 15 12578 CJ6 "key start, 12v" 1965 Universal Dispatcher Service Manual 128 TRUE from schematics 15 CJ5A alternator 1965 Universal Dispatcher Service Manual 140 15 CJ6A alternator 1965 Universal Dispatcher Service Manual 140 15 10253 CJ2A headlight switch change to CJ3A style 1965 Universal Dispatcher Service Manual 156 15 CJ3B headlight switch change to CJ5 style 1965 Universal Dispatcher Service Manual 156 15 178362 CJ2A brush horn contact on column eliminated 1965 Universal Dispatcher Service Manual 161 15 CJ3A generator change from GDZ 4817 to GDZ 6001 1965 Universal Dispatcher Service Manual 165 15 CJ2A distributor change from IGW-4177-1 to IAD-4008 1965 Universal Dispatcher Service Manual 167 TRUE 15 CJ3A distributor change from IAD-4008 to IAD-4008-T 1965 Universal Dispatcher Service Manual 167 TRUE 15 CJ3B distributor change from IAD-4008-A to IAD-4008-AT 1965 Universal Dispatcher Service Manual 167 TRUE 15 "CJ3B, CJ5" distributor change from IAD-4008-AT to IAD-4041 1965 Universal Dispatcher Service Manual 167 TRUE 15 "CJ3B, CJ5, CJ6" distributor change from IAD-4041 to IAD-4012 1965 Universal Dispatcher Service Manual 167 TRUE 15 "CJ3B, CJ5, CJ6, DJ3A" distributor change from IAD-4012 to IAD-4401 1965 Universal Dispatcher Service Manual 167 TRUE 12 77882 CJ5 57548 fuel tank return to narrow w/ short strap 1965 Universal Dispatcher Service Manual 109 11 11645 CJ3B 56337 clutch control lever cover installed 1965 Universal Dispatcher Service Manual 171 17 38222 CJ2A cane shift transmission 1965 Universal Dispatcher Service Manual 177 17 12606 DJ3A 56337 improved remote control shift rods 1965 Universal Dispatcher Service Manual 178 20 22972 CJ2A steering knuckle tie rod arm made integrally w/knuckle 1965 Universal Dispatcher Service Manual 203 20 62488 CJ3A "frt axle drive pinion change, spacer eliminated" 1965 Universal Dispatcher Service Manual 204 20 37549 CJ3A "frt axle shaft outer end floats, not retained by nut and lockwasher" 1965 Universal Dispatcher Service Manual 206 20 CJ3A eliminate lower king pin bearing shims 1965 Universal Dispatcher Service Manual 209 23 16414 DJ3A 56337 steering gear change 1965 Universal Dispatcher Service Manual 232 23 16660 DJ3A 56337 steering gear return to original style 1965 Universal Dispatcher Service Manual 232 20 35326 CJ3B 57348 turning angle change 1965 Universal Dispatcher Service Manual 235 spicer axle shafts? 20 48248 CJ5 57548 turning angle change 1965 Universal Dispatcher Service Manual 235 spicer axle shafts? 20 12497 CJ6 57748 turning angle change 1965 Universal Dispatcher Service Manual 235 spicer axle shafts? 23 199079 CJ2A "bellcrank and mounting changed to 7/8"" pin" 1965 Universal Dispatcher Service Manual 235 also improved seals and ball faces up 26 44438 CJ5 frt spring reverse shackle and pivot 1965 Universal Dispatcher Service Manual 261 26 11982 CJ6 frt spring reverse shackle and pivot 1965 Universal Dispatcher Service Manual 261 31 CJ5 late new floor pan cover plate w/ oval bubble 1965 Universal Dispatcher Service Manual 269 31 CJ6 late new floor pan cover plate w/ oval bubble 1965 Universal Dispatcher Service Manual 269 10 cylinder head change "1949 CJ2A, CJ3A parts" 18 10 44418 "timing gear oil jet added, oil slinger gasket deleted" "1949 CJ2A, CJ3" "18, 19" 10 165477 from chain to gear driven camshaft "1949 CJ2A, CJ3" "19,25" "also changed, oil pump (Eaton), timing cover. 1968 revised parts lists the engine number for change as 44418" 10 178217 starter crank nut replace with regular nut "1949 CJ2A, CJ3" "19,20" 10 54101 crankshaft front packing replaced with seal "1949 CJ2A, CJ3" 20 10 190235 crankshaft pulley change "1949 CJ2A, CJ3" 20 10 89738 "connecting rod bolt change from 7/16 to 3/8""" "1949 CJ2A, CJ3" 21 10 89012 shorter valve spring cover bolts "1949 CJ2A, CJ3" 23 10 163076 oil pump change from Eaton to aluminum body "1949 CJ2A, CJ3" 26 10 40353 oil filter change to Purolator or un-named filter "1949 CJ2A, CJ3" 26 10 oil filter change to Fram "1949 CJ2A, CJ3" 26 no serial number listed 10 57295 oil distribution elbows changed "1949 CJ2A, CJ3" 27 10 148680 intake manifold change "1949 CJ2A, CJ3" 29 10 intake manifold plug and stud changes "1949 CJ2A, CJ3" 29 no serial number listed 10 200202 Heat control valve (heat riser) spring change "1949 CJ2A, CJ3" 29 10 164506 engine stay cable attachment hardware change "1949 CJ2A, CJ3" 30 10 41781 CJ2A front insulator (motor mount) change "1949 CJ2A, CJ3" 30 10 44418 CJ2A front engine plate change "1949 CJ2A, CJ3" 31 10 49298 CJ2A rear engine plate change "1949 CJ2A, CJ3" 31 10 "CJ2A, all CJ3A" rear engine plate change "1949 CJ2A, CJ3" 31 no serial number listed 11 14127 clutch lever and tube assy change "1949 CJ2A, CJ3" 33 11 179771 clutch pedal assy change "1949 CJ2A, CJ3" 33 11 141459 clutch control cotter pin eliminated "1949 CJ2A, CJ3A parts" 35 12 50000 fuel line clip (front floor sill) change "1949 CJ2A, CJ3A parts" 36 12 69590 CJ2A "Carburetor change, use Novi governor only" "1949 CJ2A, CJ3A parts" "36,37" was King Seeley and Monarch gov. only 12 212111 "CJ2A, all CJ3A" Carburetor change Carter 636-SA "1949 CJ2A, CJ3A parts" 39 12 49697 gasket (for restrictor plate) "1949 CJ2A, CJ3A parts" 39 12 69590 plug for vacuum control vent "1949 CJ2A, CJ3A parts" 39 12 45985 Oakes air cleaner "1949 CJ2A, CJ3A parts" 39 12 Air horn change "1949 CJ2A, CJ3A parts" 40 no serial number listed 13 18639 Exhaust system change "1949 CJ2A, CJ3A parts" "46,47" rear muffler? 14 CJ3A "change to side mount radiator, rad. hoses change, grille change also" "1949 CJ2A, CJ3A parts" 48 no serial number listed 14 170065 CJ2A radiator hose connecting tubes eliminated "1949 CJ2A, CJ3A parts" 49 14 97741 CJ2A radiator guard change (grille) "1949 CJ2A, CJ3A parts" 49 park light change? 15 37218 "brace, generator change" "1949 CJ2A, CJ3A parts" 50 15 46479 CJ2A ign coil mounted to engine 46479-50800 and 50901-51184 inclusive "1949 CJ2A, CJ3A parts" 52 15 spark plug wire set change "1949 CJ2A, CJ3A parts" 52 no serial number listed 15 178362 CJ2A horn button cable added "1949 CJ2A, CJ3A parts" 52 15 CJ2A clip added "1949 CJ2A, CJ3A parts" 53 no serial number listed 15 CJ2A clip deleted "1949 CJ2A, CJ3A parts" 53 no serial number listed 15 47100 CJ2A connector change "1949 CJ2A, CJ3A parts" 53 15 47100 CJ2A "Harness,body wiring, long changed" "1949 CJ2A, CJ3A parts" 53 15 51229 CJ2A "Harness,body wiring, long changed" "1949 CJ2A, CJ3A parts" 54 15 75449 CJ2A "Harness,body wiring, long changed" "1949 CJ2A, CJ3A parts" 54 15 97441 CJ2A "Harness,body wiring, long changed" "1949 CJ2A, CJ3A parts" 54 15 116422 CJ2A "Harness,body wiring, long changed" "1949 CJ2A, CJ3A parts" 54 15 178362 CJ2A "Harness,body wiring, long changed" "1949 CJ2A, CJ3A parts" 54 horn contact brush removed from steering column 15 CJ2A "harness, body wiring, right side change" "1949 CJ2A, CJ3A parts" 54 no serial number listed 15 51229 CJ2A chassis wiring change "1949 CJ2A, CJ3A parts" 54 15 75449 CJ2A chassis wiring change "1949 CJ2A, CJ3A parts" 54 15 219466 CJ2A chassis wiring change "1949 CJ2A, CJ3A parts" 54 15 32434 "lamp, highbeam telltale" "1949 CJ2A, CJ3A parts" 57 use after serial no 32433 15 97741 "lamp, parking light" "1949 CJ2A, CJ3A parts" 57 use after serial no 97740 15 158111 headlight attachment screw change "1949 CJ2A, CJ3A parts" 57 15 38688 headlight door changed from black to chrome "1949 CJ2A, CJ3A parts" 58 15 45681 parking light change "1949 CJ2A, CJ3A parts" 58 change to chrome door 15 97741 parking light change "1949 CJ2A, CJ3A parts" 58 change to later grille w/integral light 15 209952 "light, tail and stop change door black to chrome" "1949 CJ2A, CJ3A parts" 59 different serial # for black to chrome change??? 15 "light, tail and stop change" "1949 CJ2A, CJ3A parts" 59 no serial number listed 15 209952 "bracket, tail and stop light added part" "1949 CJ2A, CJ3A parts" 60 15 45724 door and lens change black to chrome "1949 CJ2A, CJ3A parts" 60 different serial # for black to chrome change??? 15 209952 "housing, tail and stop change" "1949 CJ2A, CJ3A parts" 60 different serial # for black to chrome change??? 15 "housing, tail and stop change" "1949 CJ2A, CJ3A parts" 60 no serial number listed 15 116422 "light,IP, assy changed" "1949 CJ2A, CJ3A parts" 60 15 116422 "wire, lead, IP, assy changed" "1949 CJ2A, CJ3A parts" 60 15 116422 "switch, IP light, assy part deleted" "1949 CJ2A, CJ3A parts" 60 15 219466 "switch, stop light, assy changed" "1949 CJ2A, CJ3A parts" 61 15 47100 "block, junction, headlight change 2 post to 3 post" "1949 CJ2A, CJ3A parts" 61 15 13909 horn change "1949 CJ2A, CJ3A parts" 61 2 manufacturers possible after change 15 51229 horn bracket and mount bolt change dash to fender "1949 CJ2A, CJ3A parts" "61,62" 15 191721 horn and bracket changed "1949 CJ2A, CJ3A parts" 61 3 manufacturers possible after change 15 178361 "brush, contact, horn wire deleted" "1949 CJ2A, CJ3A parts" 62 15 67922 reflector change balck to chrome "1949 CJ2A, CJ3A parts" 63 17 24197 transmission change "1949 CJ2A, CJ3A parts" 64 17 38222 "transmission change to cane shift, and some internal changes" "1949 CJ2A, CJ3A parts" "64,67,69" 17 24197 internal transmission parts change "1949 CJ2A, CJ3A parts" 67 17 67495 "plate, lock, idler, rear gasket and countershaft change" "1949 CJ2A, CJ3A parts" "67,69" 17 77759 ball change "1949 CJ2A, CJ3A parts" 68 shift knob change?? 17 11826 shift linkage lube fitting change "1949 CJ2A, CJ3A parts" 69 18 24197 transfer case change "1949 CJ2A, CJ3A parts" 69 18 67495 transfer case change "1949 CJ2A, CJ3A parts" 69 18 24197 "transfer case idler gear, shaft and bearing change" "1949 CJ2A, CJ3A parts" 71 19 13454 rear prop. Shaft change "1949 CJ2A, CJ3A parts" 73 20 22973 frt axle steering arms moved from king pin cap to steering knuckle "1949 CJ2A, CJ3A parts" 76 "21,22" 13454 CJ2A rear axle change to semi floating "1949 CJ2A, CJ3A parts" "80,81,82" model 23 to 41 23 199080 "steering bellcrank, bearing and bracket change" "1949 CJ2A, CJ3A parts" "83,84" 23 199080 drag link change "1949 CJ2A, CJ3A parts" 84 23 22973 tie rods length change "1949 CJ2A, CJ3A parts" 84 23 38222 CJ2A steering gear change "1949 CJ2A, CJ3A parts" 85 end of remote shifter 23 178362 CJ2A "steering gear change, housing and internal parts" "1949 CJ2A, CJ3A parts" "85, 86" 24 183499 "emergency brake handle, ratchet and cable change" "1949 CJ2A, CJ3A parts" 86 24 44305 emergency brake handle change black to chrome "1949 CJ2A, CJ3A parts" 87 24 13454 rear backing plate to axle bolt length change "1949 CJ2A, CJ3A parts" 89 24 215650 CJ2A master cylinder change cast iron to aluminum "1949 CJ2A, CJ3A parts" "91,92" 24 196663 internal master cylinder changes "1949 CJ2A, CJ3A parts" 92 24 13454 "brake lines, brackets, clips change" "1949 CJ2A, CJ3A parts" "92,93" 24 215650 brake line and clip change "1949 CJ2A, CJ3A parts" "92,93" 24 11826 brake pedal lube fitting change "1949 CJ2A, CJ3A parts" 93 brake pedal arm 24 179771 "pad, brake pedal, assy. Change" "1949 CJ2A, CJ3A parts" 93 25 168643 lug nut change "1949 CJ2A, CJ3A parts" 94 25 13453 rear hub and drum change "1949 CJ2A, CJ3A parts" 95 23 to 41 axle 25 13453 rear wheel bearing change "1949 CJ2A, CJ3A parts" 95 26 199080 CJ2A "frame change, bell crank bracket different" "1949 CJ2A, CJ3A parts" 97 26 215650 CJ2A "frame change, revised to accommodate inverted steering bell crank" "1949 CJ2A, CJ3A parts" 97 26 CJ3A frame change to bottom mount radiator "1949 CJ2A, CJ3A parts" 97 no serial number listed 27 169924 HD springs change "1949 CJ2A, CJ3A parts" 99 lengths of leafs for HD springs 27 13454 rear spring clip change "1949 CJ2A, CJ3A parts" 101 27 11826 rear spring lube fitting change "1949 CJ2A, CJ3A parts" 101 27 13454 spring u-bolt plates change "1949 CJ2A, CJ3A parts" 101 27 178937 "spacer, front axle bumper added to provide clearance when Monroe lift pump is used" "1949 CJ2A, CJ3A parts" 101 27 215650 "spacer, front axle bumper eliminated" "1949 CJ2A, CJ3A parts" 101 27 106806 "spacer, rear axle bumper to frame eliminated" "1949 CJ2A, CJ3A parts" 101 28 178937 shock change "1949 CJ2A, CJ3A parts" 101 28 199080 shock change "1949 CJ2A, CJ3A parts" 101 28 215650 shock change "1949 CJ2A, CJ3A parts" 101 29 215650 front fender attachment hardware change "1949 CJ2A, CJ3A parts" 101 29 215650 "anti-squeak, frt fender splash apron to frame eliminated" "1949 CJ2A, CJ3A parts" 101 29 129807 CJ2A all CJ3A Body step added "1949 CJ2A, CJ3A parts" 102 29 133107 CJ2A all CJ3A Body step attachment hardware change "1949 CJ2A, CJ3A parts" 102 31 38222 CJ2A Body change for cane shift "1949 CJ2A, CJ3A parts" "102,106,109" 31 176062 CJ2A Spare moved to left side "1949 CJ2A, CJ3A parts" "102,107,108" body changed 31 185770 CJ2A Spare moved to right side "1949 CJ2A, CJ3A parts" 102 31 CJ2A "nut, spare wheel to carrier stud changed" "1949 CJ2A, CJ3A parts" 109 no serial number listed 31 15305 CJ2A windshield changes "1949 CJ2A, CJ3A parts" 109 31 154884 CJ2A windshield pivot bolt change "1949 CJ2A, CJ3A parts" "110,111" 31 148680 wiper vacuum fitting change "1949 CJ2A, CJ3A parts" 111 31 10557 CJ2A outside rear view morror mounting hardware change "1949 CJ2A, CJ3A parts" 111 32 215650 "bar, frt bumper and hardware changed" "1949 CJ2A, CJ3A parts" 112 33 168643 "lug wrench change from 3/4 to 13/16""" "1949 CJ2A, CJ3A parts" 112 10 190235 crankshaft pulley change to twin groove 1968 revised parts list 10 163076 "spring, oil relief plunger" 1968 revised parts list 10 164506 engine stay cable lock washer eliminated 1968 revised parts list 11 141459 pedal shaft washers eliminated 1968 revised parts list 30 193801 CJ2A all CJ3A "trough, drain, hood hinge added" 1968 revised parts list 10 CJ3B crankcase ventilator nipple added 1953 CJ3B parts 21 no serial number listed 15 CJ3B voltage regulator change 1953 CJ3B parts 42 no serial number listed 20 CJ3B changes in Rzeppa frt. Axles 1953 CJ3B parts 63 no serial number listed 35 CJ3B turn signal kit change 1953 CJ3B parts "118,119" no serial number listed 10 4J174312 cylinder head nipple replace with plug 1966 Universal parts 29 10 4J142360 oil filler tube change 1966 Universal parts 38 10 3J158187 bellhousing change 1966 Universal parts 42 10 4J142035 bellhousing change 1966 Universal parts 42 14 4J174313 "bypass hose, nipple and clamps eliminated" 1966 Universal parts "65,66" 14 4J174312 water pump change 1966 Universal parts 66 15 57348-34453 CJ3B wiring change 1966 Universal parts 85 15 57548-38242 CJ5 wiring change 1966 Universal parts 85 15 57748-10647 CJ6 wiring change 1966 Universal parts 85 15 57348-44200 CJ3B park light change 1966 Universal parts 88 15 57548-73568 CJ5 park light change 1966 Universal parts 88 15 57748-14190 CJ6 park light change 1966 Universal parts 88 15 57348-35523 CJ3B KS to SW instrument change 1966 Universal parts "95,97" 15 57548-49249 CJ5 KS to SW instrument change 1966 Universal parts "95,97" 15 57748-12578 CJ6 KS to SW instrument change 1966 Universal parts "95,97" 15 57348-39839 CJ3B SW 6v to SW 6 and 12 v instrument change 1966 Universal parts "95,97" 15 57548-61686 CJ5 SW 6v to SW 6 and 12 v instrument change 1966 Universal parts "95,97" 15 57748-13411 CJ6 SW 6v to SW 6 and 12 v instrument change 1966 Universal parts "95,97" 17 57348-93448 CJ3B T90 transmission change 1966 Universal parts 100 17 57548-151237 CJ5 T90 transmission change 1966 Universal parts 100 17 57748-23458 CJ6 T90 transmission change 1966 Universal parts 100