QSB6.7 Cummins Fuel Pump 3937690 Parts Catalog Ref No. Part Name Part No. Required 　 Fuel Pump 3937690 1 Above is the introduction of the Cummins Fuel Pump 3937690, while if you need Fuel Pump 3937690, complete Cummins engine or other Cummins product, please further consult our sales.