Thank you for viewing. Cox Body Damper for 21# Crown. Fits Crown models from January 2013 to May 2018. This was removed from a vehicle owned by my relative. There is no instruction manual. Other stays and mounting bolts are included. The body damper has a special construction, and unlike shock absorbers, it does not leak gas or oil, and its effect is said to last semi-permanently. I also have one installed on my 1-box vehicle, and I hardly feel the jolts from manholes or the slight swaying after changing lanes at high speeds. Passengers in the passenger seat will notice the difference the most. There is rust on the main body, but there are no functional problems. Thank you for your consideration.