This is a Cummins OEM repair connector for the VP44 injection pump. Fault code P1689(no communication between VP44 and ECM) is a common problem when this harness goes bad. Pins in this connector can wear out and not seat properly to VP44 pins. Why replace the entire $1,500.00 engine harness when you can replace the connector? These work on all Dodge Ram Cummins applications from 1998.5-2002 with the VP44 fuel injection pump. This connector also works on all RV/Commercial/Industrial applications that use the VP44 fuel injection pump. This connector is assembled only with OEM Cummins components.