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(888) 312-8812 Login SignupWhich part keeps the alternator, water pump, and fan turning on a Cummins engine? The Cummins Serpentine Belt carries that load from the crankshaft pulley, so its condition shows up across the whole accessory drive. Over time, heat and constant flexing crack the ribs and glaze the contact surfaces until the belt slips. Changing to the Cummins 3289930 restores full grip before a worn belt slips, squeals, or breaks on the road.
| Brand | Part Number |
|---|---|
| 3289930 | |
| CONTINENTAL AG | 4080690, 4080690X |
| DAYCO | 5080690DR, 5080690 |
| GATES | K080690, K080690HD, K080690RPM |
| GOODYEAR BELTS | 1080690 |
| NAVISTAR | FLTBT690K8 |
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