Dayco Belt Tensioner 89442 mpn-85123672002 Part number: 999146A

Part number: 999146A

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Dayco Belt Tensioner 89442 mpn-85123672002 Part number: 999146ADayco Belt Tensioner 89442 is a real accessory drive belt tensioner product for heavy duty truck and fleet applications. Brand: Dayco Part number: 89442 Product type: Belt tensioner assembly Description: Automatic Belt Tensioner, Heavy Duty (H. D.) This component helps maintain proper belt tension in accessory drive systems to support stable belt tracking, reduced vibration, and reliable pulley performance. Verify part number, pulley style, and engine