Overview
The Crown Automotive 52089328AC is an upper front coil spring isolator for 2005 and 2006–2009 Jeep Grand Cherokee and Commander models. A coil spring isolator is a pad that sits between the top of the coil spring and its seat, and this one fits either the driver or passenger side.
It is an upper front part from Crown Automotive, and its coverage runs across the Commander XK, the Grand Cherokee WJ and the Grand Cherokee WK.
Key features
- Upper front position
- Fits either the driver or passenger side
- Sold individually
- Covers 2006–2009 Commander (XK), 2005 Grand Cherokee (WJ) and 2006–2009 Grand Cherokee (WK)
Upper isolator wear and replacement
The upper isolator takes the top load of the coil spring where it meets the body mount. Over time the pad can flatten, harden or crack, which allows the spring to shift and rattle. On a Grand Cherokee or Commander, that movement often shows up as noise over bumps or a front end that feels loose on uneven pavement.
Replacing the isolator usually means lowering the spring or working with the strut assembly, so plan the job with a helper and proper support. Clean the spring seat and check it for rust before the new pad goes in. Because the front corners work as a pair, inspect both sides and replace them together when one shows wear. Keep the isolator’s orientation consistent with the old part, and tighten the mounting hardware to the factory value in a service manual.
- Clean the spring seat before fitting
- Inspect the strut mount for cracks
- Replace both front sides together
Specifications
| Brand | Crown Automotive |
|---|---|
| Part number | 52089328AC |
| UPC | 848399039795 |
| Position | Upper front |
| Side | Driver or passenger side |
| Sold as | Individually |
Vehicle fitment
It fits 2006–2009 Jeep Commander (XK) in the 65th Anniversary Edition, Base, Limited, Overland and Sport trims; 2005 Jeep Grand Cherokee (WJ) in the Laredo and Limited trims; and 2006–2009 Jeep Grand Cherokee (WK) in the 65th Anniversary Edition, Laredo, Limited, Overland and SRT8 trims.
The Grand Cherokee WJ fit is for the 2005 model year only. Other Grand Cherokee generations and Commander years outside 2006–2009 are not covered. Confirm your vehicle’s year, model and trim before ordering.
What’s included
It is sold individually as one upper front isolator for the driver or passenger side.
Not included: Check the package contents against your installation steps before starting, including the coil spring and mounting hardware, which are separate from this part.









