Range Rover P38 Air Suspension Calibration Blocks Full set of front and rear calibration blocks included. Replaces the Following OEM Land Rover Part Number LRT-60-003 Full set of height calibration blocks for the P38 Range Rover. These blocks are used for setting the air suspension after a repair or just resetting it over time. These blocks are often highly overpriced and have been reproduced here at a substantially more affordable cost. Reverse engineered from OEM Land Rover dimensions and specifications and manufactured in durable, heat resistant 3D printed ABS. Fix that air suspension and do so while saving money! Calibration Block Specifications High: 2x 140mm Front 2x 145mm Rear Standard: 2x 100mm Front 105mm Rear Low: 2x 75mm Front 2x 80mm Rear Access: 2x 35mm Front 2x 40mm Rear Insertion Diameter: 30mm Bump Stop Support Flange: 45mm Use at your own risk. Keep hands and feet out from under the vehicle at all times and be sure to fully research the process. Do not trust trust only the blocks to support the vehicle. Replica, 3D printed ABS Parts that perfectly match the originals. Printed with high quality ABS that is heat and wear resistant. Please verify fitment prior to purchasing and ask any questions. We're happy to help! Made in the USA!