Part Number: 1289029-1 (Component) Part Number: 12-890291-001 (Adapter,connector) Part Number: 12-890-3 (No description) Part Number: 1289033 (Fitting) Part Number: 128904 (King pin) Part Number: 128904LC (Component) Part Number: 128905 (Ne) Part Number: 128905-01 (Component) Part Number: 128905-02 (Bracket assy) Part Number: 12890-503 (Coupling shaft) Part Number: 1289051-1 (Spacer) Part Number: 1289051-2 (Spacer) Part Number: 1289054-1 (Component) Part Number: 128-90592 (Gasket)