FORD 2009 F-550 v.2 - Manual (Page 411)

The Vehicle Identification Number (VIN) contains the following
information:
1. World manufacturer identifier
2. Brake system / Gross Vehicle
Weight Rating (GVWR) / Restraint
System
3. Vehicle line, series, body type
4. Engine type
5. Check digit
6. Model year
7. Assembly plant
8. Production sequence number
TRANSMISSION CODE DESIGNATIONS
You can find a transmission code on
the Safety Compliance Certification
Label. The following table tells you
which transmission each code
represents.
Code Description
5 Six-speed manual, Dana (ZF S6–650)
7 Six-speed manual, Dana (Z/F M6HD-W)
T Five-speed automatic, TorqShift (gas engines)
B Five-speed automatic, TorqShift (diesel engine)
2009 F-250/350/450/550 (f23)
Owners Guide, 2nd Printing
USA (fus)
Maintenance and Specifications
411