Series B ( ISB/QSB )

Cummins B Series     Call 973.227.5926


The Cummins B Series is a straight-6 and 4 piston engines. QSB (Quantum System B) is the off road,heavy duty version of the ISB. Design innovations include a 24-valve setup and the Interact electronic engine management system, both contributing to increased fuel efficiency and meeting emission regulations. Typically used in marine, agricultural.

Find Parts for Cummins ISB and QSB Engines , available parts for ISB 3.9, ISB 5.9, QSB 4.5, QSB 5.9, and QSB 6.7

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