26458 Febi Alternator Overrun Pulley

Designed for use in engine accessory drives, the Febi Alternator Overrun Pulley (MPN 26458) dampens vibrations and protects the belt drive system. This overrunning clutch allows the alternator to rotate freely during engine deceleration, extending belt life and reducing noise. This aluminium pulley features 5 ribs, an outer diameter of 76,4 mm and internal hex fastening. Made in China, it boasts dimensions of 59 x 81 x 81 mm, with a 17 mm inner diameter and M16 x 1,5 internal thread. Dimensions are provided by the supplier and may include packaging dimensions. Water pumps are critical components of vehicle engine cooling systems, responsible for circulating coolant throughout the engine block, radiator, and heater core. Typically driven by the engine’s belt system or, increasingly, electrically, they utilize an impeller to generate coolant flow. Construction commonly includes a sealed bearing assembly, aluminum housing, and a rotating impeller made of metal or plastic. Modern designs may incorporate thermostat integration or variable speed control for optimized thermal management. Failure results in engine overheating and potential catastrophic damage.