FORD 2011 E-450 v.3 - Manual (Page 306)

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.
Description Code
Five-speed automatic (5R110W) T
Four-speed automatic (4R75E) Q
Maintenance and Specifications
306
2011 Econoline (eco)
Owners Guide, 3rd Printing
USA (fus)