Rear Air Suspension Shock Absorber Struts RPD501090 for Land LR3 2002-2012 LR4 2009-2016 Range 41542683Introductions: Air suspension is essentially a computer controlled system, a vehicle suspension driven by an electric or engine driven air pump or compressor. The driving characteristics and performance of the vehicle can be adjusted. By changing the air pressure in the spring, different vehicle heights (minimum ground clearance) can be achieved. Function: Shock absorber is an important part of any vehicle suspension system. Most vehicles have a shock