Garrett parts have 10 digits.

The first 6 determine the part in general and the following four the versions or modifications of the part.

The first of the second four explains to which market the part is directed.

 

Part Number

Meaning

466506-0005 Turbo sold to auto factory or made for the assembly line.
466506-5005 Turbo sold to auto factory for replacement vehicle
466506-5005S Turbo sold through GARRETT distributor
466506-9005 Reconditioned turbo