THIS KIT IS A COMPLETE SET...INCLUDES ALL THE O-RINGS NECESSARY TO REBUILD THE FRONT, REAR, AND RESERVOIR PRESSURE SWITCH VALVE BLOCKS ***NOT LIKE THE OTHER CHINESE VERSIONS ON HERE THAT LEAVE OUT SOME OF THE REQUIRED O-RINGS*** Kits Includes A FULL SET of (40)O-rings 1 O-ring Removal Tool 1 Torx/Star Bit 1 1oz O-ring Lube 1 Install Guide Models Affected Compatible With Land Rover LR3 / Discovery 3 2005 - 2009 Land Rover LR4 / Discovery 4 V8 5.0 Liter 2010 - 2016 Land Rover Range Rover L322 Full Size Model 2006 - 2012 Land Rover Range Rover Sport and Sport Supercharged L320 2006 - 2012 Land Rover Range Rover Sport L320 2010 - 2012 Front & Rear Valve Block Solenoid Part Numbers RVH000095, RVH000095G,RVH500060,RVH500060G,RVH500050, RVH500050G,RVH000055,RVH000055G. Air Receiver Pressure Switch Valve Block Solenoid Part numbers RVH500070,RVH000046,RVH000045.