The DAYCO 1.1" x 99" poly rib heavy duty serpentine belt for Ford / PACCAR is designed for demanding operations and heavy duty applications. Constructed with high-strength polyester, it delivers reliable performance under extreme conditions. The belt offers a superior grip to reduce slippage and enhance component synchronization. Engineered to minimize noise, it ensures a quieter and smoother driving experience. Furthermore, it is resistant to oil and dirt, which helps maintain its integrity over time and consistent functionality.