DAYCO 89257 AUTOMATIC SERPENTINE BELT TENSIONER 1999-2003 FORD F-250/350/450/550 7.3L POWERSTROKE | 2000-2003 FORD EXCURSION 7.3L POWERSTROKE | 1999-2003 FORD E-350/450 7.3L POWERSTROKE | 2002-2003 FORD E-550 7.3L POWERSTROKE

The Dayco 89257 Automatic Serpentine Belt Tensioner is a high-performance component designed specifically for the 1999-2003 Ford F-250, F-350, F-450, F-550, and the 2000-2003 Ford Excursion with the robust 7.3L Powerstroke engine. This reliable tensioner also fits various Ford E-Series models, including the E-350, E-450, and E-550, ensuring compatibility with a range of heavy-duty vehicles.

Engineered for efficiency, the automatic belt tensioner maintains optimal tension on the serpentine belt, reducing slippage and ensuring smooth operation of the engine accessories. Its clockwise rotation is tailored to match the design specifications of the Powerstroke engine, allowing for seamless integration and enhanced performance. With two pulleys, each with a diameter of 76 mm, this tensioner is built for durability, providing reliable service even under heavy loads.

The first pulley has eight grooves and a width of 38.1 mm, while the second pulley features a flat design with a width of 37 mm. These measurements ensure that the tensioner can handle various serpentine belts while maintaining maximum efficiency. The Dayco 89257 is also constructed with quality materials, built to withstand wear and tear, and to extend the life of your engine’s belt system.

Maintaining your vehicle's serpentine belt system is crucial for the optimal functioning of essential components like the alternator, water pump, and power steering. Choosing the Dayco 89257 Automatic Serpentine Belt Tensioner ensures that your vehicle operates smoothly and reliably, providing peace of mind on the road. Invest in your vehicle’s performance and longevity with this essential component that’s designed with precision for select Ford models.