Automatic belt tensioner supplied by Cummins. It is used to maintain belt tension in engine accessory drives and protect belt-driven components from slip and vibration. Cummins context gives strong engine-system inheritance and fits diesel-generator support unless vehicle use is explicit. This is an OEM mechanical spare rather than a generic idler component. It should be sold by exact engine compatibility. Verify parent engine family before installation.

SKU

AE00003012

Make

Cummins

Manufacturer Part Number

3976831

Availability

ex-stock

Product Information Note

The specifications, descriptions, and pricing presented in this listing are based on information provided by the seller and available documentation at the time of publication. While reasonable efforts have been made to structure and present the information accurately, all technical specifications, compatibility, certification status, regulatory compliance, and current condition must be independently verified by the buyer prior to purchase. Images displayed may be illustrative and are provided for reference purposes only. They may not represent the exact unit, configuration, or condition of the item offered. Buyers are strongly encouraged to request actual photographs, serial numbers, inspection reports, certificates, and any additional technical documentation necessary to support due diligence before entering into a transaction.