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Keeping the alternator, air compressor, and other front-mounted accessories turning consistently starts with the Cummins Serpentine Belt staying properly tensioned and free of surface cracking. The Cummins 3289809 uses ribbed construction that increases pulley contact area compared to older multi-belt setups, transmitting more load through a single continuous loop. A belt that's glazed or cracked can slip intermittently under load, showing up as an unstable charging system or a chirping noise on cold starts. Replacing a worn belt before it fails keeps every accessory on that loop running without the domino effect one slipping belt can cause.
BELT,V RIBBED
| Brand | Part Number |
|---|---|
| 3289809 | |
| CONTINENTAL AG | 4080803 |
| DAYCO | 5080800 |
| GATES | K080797, K080797HD, K080797RPM |
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