
Throughout the production lifecycle of Subaru vehicles, Subaru periodically implements design and specification updates to various components. For example, a Subaru Impreza WRX STI manufactured in August 2004 may incorporate a revised part compared to earlier models.
When such changes occur, the corresponding part number is updated to reflect the new specification for all subsequent production. In parallel, Subaru amends the applicable model code to ensure that searches performed using a vehicle’s VIN (chassis number) accurately identify and return the correct, updated part number.

The Applied Model code letter is F for this Chassis number

The Chassis number identity on this Vin plate Says GDB, this would refer to an Impreza (G) The (D) refers to a Saloon and The ( B) refers to Model spec which is an STI. The GD refers to Newage Impreza 2000-2007.
The Engine Code also states an EJ207 which is the 2.0 litre turbo charged STI engine
The Colour Code is the Paint code. This code is 45A (Metal Grey)
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