For sale is (1) New Caterpillar 538-5051 Communications Adapter 3 Group. Also known as a CAT Comm 3. This adapter allows you to communicate to a machine/ECM/generator/industrial engine using a laptop with CAT ET installed onto it. Adapter ships free via UPS ground shipping. If you are needing to communicate with a CAT truck engine, then you will need additional adapter 7X-1686 for the 6 pin adapter for your older truck engines such as a CAT 3406E. For newer CAT C15 engines you will need the additional 507-1011 adapter which is a 9 pin adapter. If you have any questions please don’t hesitate to ask! Thank you for taking the time to look!

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