General Ford Part Number decoding
For general reference only

Example: #

 D1AF-DA
B 1B 23

First Line
D1AF-DA

 Decade produced
 B = 1950's
 C = 1960's
 D = 1970's
 E = 1980's

D1AF-DA

 Year produced
 1 = 1971
 2 = 1972
 3 = 1973
 ETC.
D1AF-DA Model , These do not always apply
     A - Full size Ford / LTD , Etc.
     D - Falcon , Maverick
     G - Comet
     L,V - Lincoln
     M - Mercury
     O - Mid size Ford / Fairlane , Torino
     P - Replacement Part
     S - Thunderbird
     T - Truck
     U - Bronco    
     Z - Mustang
D1AF-DA  - ?? If any one knows E-Mail Me
D1AF-DA  - ?? If any one knows E-Mail Me
B 1B 23 Design changes
Second Line
B 1B 23		 4 Letter Date Code
Year Code
 1 = 1971
 2 = 1972
 3 = 1973
 ETC.
B 1B 23 Month of Date Code  
A = Jan
B = Feb
C = Mar
D = April
E = May
F = June		 G = July
H = Aug
J = Sept
K = Oct
L = Nov
M = Dec
B 1B 23 Day of Month
23rd day of the month
Example
1BF		 3 Letter Date Code
Year Code
 1 = 1971
 2 = 1972
 3 = 1973
 ETC.
1BF Month of Date Code  
A = Jan
B = Feb
C = Mar
D = April
E = May
F = June		 G = July
H = Aug
J = Sept
K = Oct
L = Nov
M = Dec
1BF Week of Month
1 or A = 1st week
2 or B = 2st week
3 or C = 3st week
3 or D = 4st week
5 or E = 5st week