International Tractor Serial Numbers
Model B-275
1959 ......................501
1960 .....................1720
1961 .....................3415
SN Location: on the left side of the clutch or transmission housing.
Model Cub Lo-Boy
1955 ......................501
1956 .....................2555
1957 .....................3929
1958 .....................5582
1959 ....................10567
1960 ....................12371
1961 ....................13904
1962 ....................15506
1963 ....................16440
1964 ....................17928
1965 ....................19406
1966 ....................21176
1967 ....................23115
1968 ....................24481
SN Location: on the left side of the clutch or transmission housing.
Model Cub 154 Lo-Boy
1968 .....................3505
1969 .....................3773
1970 ....................15502
1971 ....................20332
1972 ....................23343
1973 ....................27538
1974 ....................31766
SN Location: on the left side of the clutch or transmission housing.
Model Cub 185 Lo-Boy
1974 ....................37001
1975 ....................37316
SN Location: on the left side of the clutch or transmission housing.
Model Hydro 70
1973 .....................7501
1974 .....................7570
1975 ....................10915
SN Location: on the left side of the clutch or transmission housing.
Model I-6 and ID-6
1940 ......................501
1941 .....................1225
1942 .....................3718
1943 .....................5057
1944 .....................6371
1945 .....................9518
1946 ....................14198
1947 ....................17317
1948 ....................24021
1949 ....................28868
1950 ....................35472
1951 ....................38518
1952 ....................44318
1953 ....................45274
SN Location: on the left side of the clutch or transmission housing.
Model I-9 and ID-9
1940 ......................501
1941 ......................578
1942 .....................3003
1943 .....................3651
1944 .....................5501
1945 ....................11459
1946 ....................17294
1947 ....................22715
1948 ....................29207
1949 ....................36350
1950 ....................45689
1951 ....................51739
1952 ....................59407
1953 ....................64014
SN Location: on the left side of the clutch or transmission housing.
Model I-100
1954 ......................501
1955 ......................504
1956 ......................575
SN Location: on the left side of the clutch or transmission housing.
Model I-240
1958 ......................501
1959 .....................4835
1960 .....................8628
1961 ....................10079
1962 ....................10727
SN Location: on the left side of the clutch or transmission housing.
Model I-300U
1955 ......................501
1956 ....................20219
SN Location: on the left side of the clutch or transmission housing.
Model I-330
1957 ......................501
1958 .....................1488
SN Location: on the left side of the clutch or transmission housing.
Model I-340
1958 ......................501
1959 .....................2467
1960 .....................5741
1961 .....................8736
1962 ....................11141
1963 ....................12032
SN Location: on the left side of the clutch or transmission housing.
Model I-350
1956 ......................501
1957 .....................1963
1958 ....................15049
SN Location: on the left side of the clutch or transmission housing.
Model IW-400
1955 ......................501
1956 .....................2187
SN Location: on the left side of the clutch or transmission housing.
Model I-404 and 2404
1961 ......................501
1962 .....................1045
1963 .....................4205
1964 .....................6402
1965 .....................8292
1966 .....................9548
1967 ....................10534
1968 ....................11032
SN Location: on the left side of the clutch or transmission housing.
Model I-424
1964 ......................501
1965 .....................1402
1966 .....................7841
1967 ....................13627
SN Location: on the left side of the clutch or transmission housing.
Model I-444
1967 ......................501
1968 .....................1190
1969 .....................5720
1970 .....................9010
1971 ....................12357
SN Location: on the left side of the clutch or transmission housing.
Model IW-450
1956 ......................501
1957 ......................568
1958 .....................1661
SN Location: on the left side of the clutch or transmission housing.
Model I-454
1970 ......................501
1971 ......................508
1972 .....................4908
1973 .....................8064
SN Location: on the left side of the clutch or transmission housing.
Model I-460
1958 ......................501
1959 .....................2711
1960 .....................6883
1961 .....................9420
1962 ....................11619
1963 ....................11898
SN Location: on the left side of the clutch or transmission housing.
Model I-464
1973 ...................100003
1974 ...................102196
1975 ...................104775
SN Location: on the left side of the clutch or transmission housing.
Model I-504 and 2504
1961 ......................501
1962 ......................512
1963 .....................3376
1964 .....................6797
1965 ....................10996
1966 ....................14695
1967 ....................17992
1968 ....................20392
SN Location: on the left side of the clutch or transmission housing.
Model I-544 and 2544
1968 ....................10250
1969 ....................12699
1970 ....................14589
1971 ....................16018
1972 ....................16838
1973 ....................17341
SN Location: on the left side of the clutch or transmission housing.
Model I-560
1958 ......................501
1959 .....................1210
1960 .....................3103
1961 .....................4032
1962 .....................4944
1963 .....................5598
SN Location: on the left side of the clutch or transmission housing.
Model I-574
1970 ......................504
1971 ......................650
1972 .....................3329
1973 .....................7074
1974 ...................102961
1975 ...................107880
SN Location: on the left side of the clutch or transmission housing.
Model I-600
1956 ......................501
SN Location: on the left side of the clutch or transmission housing.
Model I-606 and 2606
1961 ......................501
1962 ......................503
1963 .....................1702
1964 .....................3214
1965 .....................5041
1966 .....................6960
1967 .....................7922
SN Location: on the left side of the clutch or transmission housing.
Model I-650
1956 ......................501
1957 ......................688
1958 ....................11659
SN Location: on the left side of the clutch or transmission housing.
Model I-656 and 2656
1966 .....................7501
1967 .....................7842
1968 .....................9929
1969 ....................11802
1970 ...................13353.
1971 ....................14194
1972 ....................14952
1973 ....................15746
SN Location: on the left side of the clutch or transmission housing.
Model I-660
1959 ......................501
1960 .....................3398
1961 .....................4259
1962 .....................5883
1963 .....................6995
SN Location: on the left side of the clutch or transmission housing.
Model I-664
1972 .....................2501
1973 .....................3212
SN Location: on the left side of the clutch or transmission housing.
Model I-666
1972 .....................7500
1973 .....................8200
1974 ....................11585
1975 ....................13131
SN Location: on the left side of the clutch or transmission housing.
Model I-674
1973 ...................100001
1974 ...................101862
1975 ...................103172
SN Location: on the left side of the clutch or transmission housing.
Model I-706 and 2706
1963 ......................501
1964 .....................1251
1965 .....................3478
1966 .....................4789
1967 .....................5316
SN Location: on the left side of the clutch or transmission housing.
Model I-756 and 2756
1967 .....................7501
1968 .....................7672
1969 .....................8164
1970 .....................8424
1971 .....................8427
SN Location: on the left side of the clutch or transmission housing.
Model I-766
1971 .....................7101
1972 .....................7416
1973 .....................9611
1974 ....................12378
1975 ....................14360
SN Location: on the left side of the clutch or transmission housing.
Model I-806 and 2806
1963 ......................501
1964 .....................1403
1965 .....................3758
1966 .....................5917
1967 .....................7409
SN Location: on the left side of the clutch or transmission housing.
Model I-826 and 2826
1969 .....................7501
1970 .....................7518
1971 .....................7719
SN Location: on the left side of the clutch or transmission housing.
Model I-856 and 2856
1967 .....................7501
1968 .....................7904
1969 .....................9016
1970 .....................9544
1971 .....................9653
SN Location: on the left side of the clutch or transmission housing.
Model I-1026 and 21026
1970 .....................7501
1971 .....................7550
SN Location: on the left side of the clutch or transmission housing.
Model I-1206 and 21206
1965 .....................7501
1966 .....................7772
1967 .....................8492
SN Location: on the left side of the clutch or transmission housing.
Model I-1256 and 21256
1967 .....................7501
1968 .....................7703
1969 .....................8444
SN Location: on the left side of the clutch or transmission housing.
Model I-1456 and 21456
1969 ....................10001
1970 ....................10025
1971 ...................102749
SN Location: on the left side of the clutch or transmission housing.
Model I-4100
1966 .....................8001
1967 .....................8723
1968 .....................8986
SN Location: on the left side of the clutch or transmission housing.
Model I-4156
1969 .....................9219
1970 .....................9365
SN Location: on the left side of the clutch or transmission housing.
Model I-4166
1972 ....................10001
1973 ....................10769
1974 ....................11255
1975 ....................11684
SN Location: on the left side of the clutch or transmission housing.
Model I-4366
1973 .....................7501
1974 .....................7780
1975 .....................8616
SN Location: on the left side of the clutch or transmission housing.
Model I-4568
1975 .....................8001
SN Location: on the left side of the clutch or transmission housing.
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