RANGE ROVER P38 EAS AIR SUSPENSION VALVE BLOCK VITON O RING REPAIR FIX KIT X8R12 Leak from EAS system but no visable leaks when testing components, vehicle on bump stops? Slow leak? Complete failure of EAS system? THE CAUSE: The O-rings and diaphragm seal within your vehicles EAS valve block system can wear causing the symptoms noted above. The O rings and or diaphragm wearing can lead to the compressor overworking and can cause complete EAS falure, we always recommend replacing the diaphragm seal when replacing the o-rings in the valve block as both can cause leaks and EAS failure. VEHICLES AFFECTED: Range Rover Classic 1993-1996 Range Rover P38 19942002 Many Citroen and LDV models Associated part numbers: E311660030 , 38769609, THE SOLUTION: Fit our improved material O-rings and restore your EAS system to full health. Fit our Viton O-rings and cure those leaks, importantly our O-rings are made from Viton 75, this material is suitable for the elevated and varing temperature range which the valve block endures. Viton rubber also has extremely good wear resistance far outlasting Silicone and Buna O-rings. Beware of cheap kits with Silicone and Buna O-rings we only ever use Viton. INSTRUCTIONS: 1) http://x8r-instructions.co.uk/Range-Rover-P38-EAS-Air-Suspension-Valve-Block-O-rings-instruction-guide-repair-fix-kit.pdf