Engine Number; Transmission/Transaxle Code Designations - Ford 2005 F250 Owner's Manual

Maintenance and Specifications
1. World manufacturer identifier
2. Brake type and gross vehicle
weight rating (GVWR)
3. Vehicle line, series, body type
4. Engine type
5. Check digit
6. Model year
7. Assembly plant
8. Production sequence number

Engine number

The engine number (the last eight numbers of the vehicle identification
number) is stamped on the engine block, transmission, frame and
transfer case (if equipped).

Transmission/Transaxle code designations

You can find a transmission/transaxle code on the vehicle certification
label. The following table tells you which transmission or transaxle each
code represents.
297
2005 F250/350/450/550 (f23)
Owners Guide (post-2002-fmt)
USA_English (fus)