Four-Speed Manual With Automatic Overdrive (Doug Nash) MK2

Source trademark appears above speedo gear opening.

The Doug Nash transmissions have the source code, calendar year, and month, unit serial number and ratio identification stamped on two (2) metal tags. One (1) tag is attached to the T-10 transmission side cover lower bolt, and the other tag is on the overdrive pan front bolt.

Example: (Overdrive) D 4 C 25 037 - CD


D 5 C 6037 C F

Source Code Year Month Serial Number Ratio P/N

D=Doug Nash 5=1985 A=Jan. 6037=6037th
B=Feb. Unit Built
C=Mar.
D=Apr.
E=May
F=June
G=July
H=Aug.
J=Sept.
K=Oct.
L=Nov.
M=Dec.




The tag on the T-10 transmission has an additional code.