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: ST75314 AIR BRAKE LINES (FRONT) ST104414 Steering Cylinder Lines, 1500 MFWD ST121919 Brake Valve Lines ST121921 Trailer Brake Valve (Hydraulic) ST121892 Steering Valve ST121942 Brake Cooling Valve (50k/Ivt/Ils) ST121922 AIR BRAKE CONTROL VALVE ST121898 STEERING VALVE MOUNTING PARTS ST75327 Brake Cooling Valve Lines (50K/IVT/ILS) ST121928 AIR BRAKE AIR COMPRESSOR