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Chassis numbers
Jeep chassis numbers
Willys serial plates, the Willys and Kaiser prefixed serials of 1953–71, American Motors’ 13-character number of 1972–80 and the 17-character VIN from 1981 (1JC, 1J4, 1J8, 1C4 by era) — the model numbers 83, 84, 87 and 93 and 14 to 46 identify CJs, wagons and trucks in the AMC system.
Willys plates and serials to 1963, Kaiser prefixes to 1971, the 13-character AMC number of 1972–80 and the 1JC VIN from 1981.
1941–1945 MB / GPW serial 1945–1953 Model prefix + serial 1953–1963 (Willys) Five-digit prefix + serial 1963–1971 (Kaiser Jeep) Four-digit prefix + serial 1972–1980 13-character Jeep number 1981–1986 17-character VIN THE CJ CHASSIS NUMBERS →
17-character VINs throughout; the WMI (1JC, 1J4, 1J8, 1C4) dates the era.
1987–today 17-character VIN THE WRANGLER CHASSIS NUMBERS →
Kaiser prefixes, the AMC 13-character number with model codes 14–18 and 25–46, then 1JC and 1J4 VINs.
1963–1971 (Kaiser Jeep) Prefix + serial 1972–1980 13-character Jeep number 1981–1991 17-character VIN THE FULL-SIZE JEEP (SJ) CHASSIS NUMBERS →
17-character VINs from 1984; 1JC then 1J4.
1984–2001 17-character VIN THE CHEROKEE XJ AND COMANCHE CHASSIS NUMBERS →