Part Number Decoder:

For those of you who are interested, this is how Subaru breaks down a part number. This could help you guess a part number if one that you found on a part is missing digits or is damaged.

Genuine Part Classification Codes

A = Part Description Code
B = Part Sequential Code
C = Part Category Code
D = Specific Code
E = Modification Code
F = Color Code

Description of Genuine Part Classification Codes

A. Part Description Code: Identifies part name and function. If the first position is an alpha, it identifies an accessory.

B. Part Sequential Code: Sequential number system assigned to the part number by Fuji Engineering Division.

C. Part Category Code: Key position of the part number in determining the logic of the numbering system:
A = Engine and Transmission Parts
K = Engine and Transmission Parts
X = Some Automatic Transmission Parts
G = Body Parts

D. Specific Parts: Identifies specific characteristics of parts with the same part description code and designated sequences from A00. The specific code is assigned by the Fuji Engineering Division for internal use only.

E. Modification Code: Identifies an engineering change to the part. For example:
0 = original
1 = 1st modification
2 = 2nd modification
3 = 3rd modification

F. Part Color Code: Identifies color coded parts for digits 11 and 12. Digit 11 = color and digit 12 = degree.
Code E or F in the 12th digit is for Fuji Heavy Industries (FHI) internal purposes only.

Note: Code E or F in the 12th digit is for Fuji Heavy Industries (FHI) internal purposes only.

For example look at these rare 22B parts with their part numbers.