Cummins 6C8.3/ISLe8.9 Fuel Pump 3973228 Parts Catalogue Ref No. Part Name Part No. Required 1 Fuel Injection Pump 3973228 1 2 Sealing Washer 3963990 3 3 Quick Disconnect Connector 3969822 3 4 Fuel Pump 4921431 1   Above is the introduction of the Cummins 3973228 Fuel Pump, while if you need any other Cummins spare parts or complete Cummins engine, …