Interlock Assy. For Cab Doors And Lock Assly For Machine Room Doors & Gangway Door For Wag-9Hc Twin Locomotives As Per Drg.No. 1209-09.133-021 Alt.2, 1209-09.133-071 Alt.1 Specn No. : Clw/Ms/3/111 Alt.7 [ Warranty Period: 120 Months After The Date Of Delivery ].