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(888) 312-8812 Login SignupAUTOMATIC BELT TENSIONER, HD, DAYCO
Highway tractors and vocational trucks lean on one tensioner to keep every accessory turning, and the Dayco Automatic Belt Tensioner is made for that duty. The Dayco 89484 is a heavy-duty automatic unit that follows the loop through speed changes and load swings. Constant movement wears pivots and springs, so replacement keeps the drive from developing slap or squeal. Replacing the worn arm helps maintain steady pressure on the belt as the engine speed and accessory loads change.
| Type | Automatic |
| Direction | Clock Wise |
| Belt Type | Serpentine |
| Number of Pulleys | 1 |
| Pulley 1 Diameter | 74 mm |
| Pulley 1 Flat | Y |
| Pulley 1 Width | 39.25 mm |
| Country of Origin (Primary) | US |
| Harmonized Tariff Code (Schedule B) | 8708998180 |
| UPC | 00036687825971 |
| Brand | Part Number |
|---|---|
| 4-SEASONS | 45836 |
| AC DELCO | 38505 |
| BANDO | 680093 |
| CARQUEST | 38505, 38557 |
| CATERPILLAR | DC090-899000 |
| CONTINENTAL AG | 49515, 49111 |
| CUMMINS | 3284080, 4004933 |
| Continental Elite | 49515 |
| DETROIT DIESEL | 23512829, 23520450 |
| DORMAN | 419-403, 419-400 |
| DYNACRAFT | D1186-2380 |
| Duralast | 89484 |
| FREIGHTLINER | DCO90-899000 |
| FRESH START | 49515 |
| GATES | 38505, 38557, 36091 |
| GOODYEAR | 49515, 49576 |
| GOODYEAR BELTS | 55177 |
| General Motors | 15083306, 10269982, 10297668 |
| INTERNATIONAL/NAVISTAR | 1830033C1 |
| JOHN DEERE | RE57498 |
| LIEBHERR | 10296696 |
| LITENS | 910002, 910002A |
| NAPA | 38505, 38557 |
| NAVISTAR | FLT689404 |
| Navistar | 1830033C1 |
| SKF | VKM910002 |
| TENDECO | 910564 |
| VOLVO | 20461106, 20501412, 8073465, 8079517 |
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