Cummins 3288757 Ribbed V-Belt Assembly

The Cummins 3288757 is an 8-rib PK profile serpentine belt engineered for the accessory drive systems of Cummins B-series, ISB, and QSB3.9 diesel engines. Constructed from high-modulus EPDM rubber compound with aramid tensile cords, it provides resistance to heat, ozone, and abrasion while maintaining dimensional stability under high tension loads. The effective length is 1417 mm (8PK1417 designation). This belt drives the alternator, cooling fan, and water pump. It supersedes Cummins engineering part numbers 3908037 and 3911588. Compatible tensioner assemblies include part numbers 6735884 and 6662997. Applications span Dongfeng and Foton commercial trucks, Liugong construction equipment, marine propulsion units, and industrial generator sets powered by the 3.9L and 5.9L B-series platforms.