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: ST846520 Control Support, Front, Steering Column ST121924 Air Brake Air Tank ST75303 BRAKE VALVE ATTENUATOR ST75315 AIR BRAKE LINE (REAR) ST121915 Brake Pedals / Brackets, PST ST75298 Brake Make-Up Check Valve ST121910 BRAKE VALVE ST121917 SECONDARY BRAKE (EUROPEAN VERSION) ST121926 Air Brake Couplers (For Europe) ST121911 Brake Valve Overhaul Kit, Manual Backup