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P Auto Transmission
R Manual Transmission
S Light and Heavy Truck Special Order Parts
T Heavy Truck Engineering
U Special Vehicle Operations
W Axle and Driveshaft
X Emissions, Economy and Special Vehicle Engineering (also known
as Muscle Car Parts)
Y Lincoln/Mercury Service Parts
Z Ford Service Parts
Fifth thru Eighth (or ninth, or tenth) digit: Group Number
(also referred to as the Basic Part Number)
The fifth thru perhaps the tenth digit is the Group Number or the Basic Part Number.
Example (Group numbered bolded for emphasis):
C5ZZ-5255-F
C8TZ-1A401-A (with an expanded basic part number)
Last Digit or Suffix
The last digit is usually a letter (A, B, C, etc.) and indicates a revision or change to a
particular part. If the part did not change, the suffix is not used. The letter A=the first
change, B=second change, etc.
Body Part Numbers:
Body part numbers are similar to Chassis part numbers with one exception, the group number or
basic part number uses a seven digit number. The first two digits identify the body type (see pages
31-34 of the Chassis General Instructions) and the last five numbers ("Body Group") identify the
specific part within a general body area. A one to three-letter suffix may be used, usually to
indicate color. Therefore, the first four characters of a body part number use the same format as
the chassis part number (see Chassis Part Numbers above).
Example #1: D0DZ-6200052-A
Body Type Code = 62 (Falcon, 2 door sedan)
Group Number = 00052 (Vehicle Identification Retainer)
Example#2: C6ZZ-6504290-BAB
Body Type Code = 65 (Mustang, 2 door hardtop)
Group Number = 04290 (Instrument Panel, Black)
Note: Example #2 is a Body Part number, but because it is an instrument panel pad, it is
considered a Soft Trim item. Therefore, this item is NOT found in the body parts section. Instead,
it is found in the Soft Trim Section. In this case, look under Soft Trim > 1966 > 04290 (page 47 of
the Soft Trim section).
Engineering or Casting Numbers
Service Part numbers differ from Engineering or Casting numbers. Part numbers were used for