Engineered for Belt System Stability: The DDE A4722001670 Accessory Drive Belt Tensioner Kit. This is one genuine DDE A4722001670 Belt Tensioner Kit, a crucial component for the smooth and reliable operation of your engine's accessory drive system. This premium tensioner is designed to handle the high vibration and thermal demands of the Det Diesel DD13, DD15, and DD16 heavy-duty truck engines. The A4722001670 kit is a fully formulated, high-efficiency solution that ensures unparalleled stability for the serpentine belt, transmitting power reliably to the alternator, water pump, and fan hub. The assembly features a robust, multi-pulley configuration (1 grooved, 2 smooth) to manage the long belt path and high accessory load. The kit is often associated with an upgrade (Hydraulic/Spring to Friction style) that provides better long-term reliability and easier service. Ready-to-use, this kit delivers optimal belt alignment and consistent tension. Cross-references of the product: Det Diesel A4722001670, A4722000470, A4722001570, A4722001070, Gate 38667, 89498, Daco 89498, and PA 680330. The superior design of DDE A4722001670 eliminates belt chirp/squeal, extends the service life of both the belt and driven accessories, and provides a guaranteed service life when installed correctly. Characteristics: ⦁ Part Type: Belt Tensioner Kit ⦁ Application: Accessory Drive System (Serpentine Belt) ⦁ Engine Compatibility: Det Diesel DD13, DD15, DD16 (MTU 1300 Series) ⦁ Pulley Quantity: 3 (1 Grooved, 2 Smooth) ⦁ Mounting Holes: 3 ⦁ Kit Includes: Tensioner Assembly, Installation Pins, and Screw