BN

IH produced the Farmall BN from 1940 to 1947, and there were about 1500 of them produced. The Farmall BN is the same tractor as the Farmall B, except for a few rear wheel changes. It provides a narrower rear wheel tread, varying in 4 inch increments. It would allow the rear wheel to be placed from 56 to 84 inches apart, while the B only allowed the wheels to stretch from 64 to 92 inches. The BN was designed to work row crops, such as beets and potatoes.

Farmall B Serial Numbers (Includes BN)
The serial number is located on the left seat support bracket, under the seat.

Prefix Letters: B=FAB, BN=FABN

SERIAL NUMBER........................................YEAR
501 - 6743.........................................................1939
6744 - 41499.....................................................1940
41500 - 80738...................................................1941
80739 - 96389...................................................1942
no official production........................................1943
96390 - 113217..................................................1944
113218 - 146699................................................1945
146700 - 182963................................................1946
182964 - 198298 (Chicago)...............................1947