Review on ACDelco 504 547 Specialty Shock Absorber by Threlkeld Drauch

I replaced the load leveling air shocks on my Buick Park Avenue 99 with this kit and am very happy with the ride. I did a lot of research before purchasing this set and I'm glad I did. This kit included two shocks and all the fittings, o-rings, etc. to connect the air suspension system. The other OEM part number listed for my car was more expensive and didn't include connectors, but it did include rubber mounts pre-installed on top of the shock, a nice feature but expensive. Tip: When replacing shock absorbers, pay attention to the alignment of the air line connection and the upper bushings. The screw pattern is not centered so it is important to align it correctly.