09/05/2026
How to find decent source for CAT 18 Digits FPG
Dongle
If you're referring to the Caterpillar (CAT) 18-digit Factory Password used by Cat Electronic Technician (Cat ET) to unlock protected ECM functions, there isn't a public or generic password.
Caterpillar's system generates a unique pair of 18-digit factory passwords based on information from the specific machine and the request. These passwords are intended to be issued only through Caterpillar's Factory Password System to authorized dealers or service technicians.
If you legitimately own the machine and need factory passwords, your options are:
Contact your local Caterpillar dealer with your machine's serial number and the Cat ET request information.
If you're a fleet or service provider, ask your dealer about obtaining authorized access to the Factory Password System.
For certain machines, a dealer technician can generate the required passwords after verifying the request.
If your goal is to:
reset an ECM, change engine horsepower, clear a personality mismatch, perform a DPF-related operation, or unlock another protected parameter.
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