The 5287020 belt tensioner suits Cummins 6B5.9, B4.5, D4.5, F4.5, ISF3.8 and X15 engines. It automatically maintains proper belt tension to reduce slipping, abnormal noise and excessive belt wear. Heavy-duty internal spring and bearing assembly withstand frequent cyclic vibration. This component keeps auxiliary systems running reliably for trucks and construction equipment power units.
