Terrafirma +1" Heavy Duty Air To Coil Spring Kit With All Terrain Shock Absorbers The EAS or Electronic Air Suspension systems fitted to P38 Range Rovers can be expensive to repair and not especially reliable when heavily laden. Eliminating the costly electronic components; air spring and compressor replacement coil spring conversions offer reliable and economical repair or upgrade. When fitted with the relevant coil springs significantly increased load carrying can be achieved. All P38 Range Rovers manufactured between 1995 and 2002 were fitted with air suspension, at the time this system was regarded as state of the art and offered high levels of comfort and the ability to self-level when loaded or when towing. The P38 has generally stood the test of time and as with all Land.