Cushion the front upper coil springs on your Jeep WJ and quiet down harsh ride noise with the Delphi Coil Spring Insulator (MPN TD4645W). This front upper insulator drops in as a direct-fit replacement for the 1999-2004 Jeep Grand Cherokee, seating between the coil spring and the spring seat where the original insulator has hardened, cracked, or worn thin.
Delphi applies its OE steering and suspension expertise to this aftermarket insulator, with extensive dimensional and material analysis for close compatibility to the original part. Delphi tests to the extreme: parts withstand temperatures below -40°C and over 120°C and endure 720 hours of salt-spray exposure.
- Protects the spring and seat: helps shield the coil spring and spring seat from contact damage.
- Reduces noise: helps cushion the spring to dampen ride and suspension noise.
- Keeps dust out: helps block dust and debris from the spring seat area.
- OE-informed design: built with Delphi's OE safety technology fitted to millions of vehicles worldwide.
If a worn or deteriorated insulator is the source of your creaking, popping, or metal-on-metal spring noise, this replaces it. Sold individually; the front pair is a common wear point, so inspect both sides.
Interchange: 52088257 · 52088257AB · K160040 · K90226 · MS25211
This part cross-references / interchanges with the following part numbers:
52088257, 52088257AB, K160040, K90226, MS25211
