Caterpillar CAT ET3 Communication Adapter III Part Number 317-7485 Diagnostic Tool

The Caterpillar CAT ET3 Communication Adapter III (Part Number 317-7485) is a high-end diagnostic tool designed specifically for Caterpillar trucks, excavators, and engines. It supports reading ECM data, diagnosing fault codes, parameter programming, and ECM flashing, compatible with engine models such as C13, C15, 3516, etc. Equipped with a 6+9+14pin cable harness, it supports USB/WIFI connection and works with CAT ET software (such as 2019C/2023A versions) for full-function diagnostics. Widely used in the maintenance of construction machinery and heavy trucks, it helps technicians quickly locate and resolve electronic control system issues.