These air suspension bag are aftermarket products. They will replace the original air shock. Please double confim the compatibility as well as the OEM number before purchasing. Air Suspension Bag Car air suspension spring bag is one of the most popular suspension kits available, it delivers some of the greatest performance benefits and convenience for all types of vehicles. Air suspension bag kits raise the vehicle high enough to compensate for any extra weight. This helps to keep the vehicle level while towing and hauling and prevents rear sagging, bottoming out, and excessive pressure on your tires. Reference OE/OEM Number: RNB000750, RNB501530 RNB500550, RNB501410 Applications for LandRover RangeRover L322 2003-2005 (Front Left Air Shock Assembly - All Models) for LandRover RangeRover L322 2006-2009 (Non-Sport Models - Front Air Shock Assembly - 4.4L Engine) (For vehicles without ADS system only） This does not fit the V8 Supercharged Model Important Notice * Condition: New *