Gas Charged Lift Supports are energy storage devices which create force by compressing gas inside a cylinder. Unless shown as a universal, each Lift support listed in this Amazon item is specifically manufactured to OEM specifications for the listed application. Each support is tested to perform as well as the original units and in many cases to exceed the manufacturers specification. Lift Supports lose pressure over time, even sitting on shelves in most auto parts stores and many of the inventory liquidators on the web. *Please Note* If your existing part number does not exactly match this part number internal components could be different.