Parts list: № Number Qty Name Options 1 R186866 2 Back-Up Ring ID = 16.332 2 RE163491 1 Solenoid Valve 3 RE186848 1 Seal Kit 4 R26906 1 O-Ring 5 R27166 1 O-Ring 6 R186865 2 Back-Up Ring ID = 14.732 7 R33259 1 O-Ring 8 R186864 2 Back-Up Ring ID = 13.157 9 R28776 1 O-Ring Next page: ST121925 AIR BRAKE COUPLERS (NORTH AMERICAN VERSION) ST75316 TRAILER BRAKE VALVE ST593914 Brake Pedals / Brackets, IVT ST121909 BRAKE VALVE BRACKET ST288172 SINGLE LINE BRAKE VALVE KIT ST551074 Hydraulic Trailer Brake Kit (W/ or W/O Autotrac) ST121915 Brake Pedals / Brackets, PST ST88480 Brake Valve Overhaul Kit ST593920 Switch, Brake Pedal, PST ST75298 Brake Make-Up Check Valve