SUSUPACI Coil Spring Isolator Kit for Jeep Grand Cherokee WJ/WG 1999-2004 — 8pc OEM-fit Rubber/Polyurethane

If your Grand Cherokee has developed squeaks, clunks, or a harsher ride, worn factory spring isolators are often the cause. This complete kit supplies four upper and four lower rubber isolators engineered to match OEM fitment and restore proper spring seating for both front and rear suspension assemblies. Made from treated rubber and reinforced polyurethane layers, the parts resist aging and wear while helping to extend the life of adjacent suspension components.

How will replacing these isolators affect ride comfort?

New isolators cushion the contact points between coil springs and their mounts, which reduces vibration and road noise felt in the cabin. Riders will notice fewer bangs over bumps and a generally smoother feel during low-speed maneuvers and highway travel.

• Reduces metal-to-metal contact that causes squeaks and clunks
• Dampens small vibrations transmitted through springs
• Improves perceived suspension smoothness without altering spring rate

Are these isolators compatible with my Jeep Grand Cherokee?

This SUSUPACI set is designed specifically for Jeep Grand Cherokee WJ/WG model years 1999 through 2004. The kit replaces common OEM part numbers so you can match with original factory locations and orientation.

• Fits model years: 1999, 2000, 2001, 2002, 2003, 2004
• Replaces: K160040, K160041, K160061, K160042 and 52088257AB, 52088401AB, 52088346AB, 52088402AB
• Includes both front and rear, upper and lower isolators (8 pieces)

What are the materials and durability features?

Each isolator is molded from high-quality rubber with reinforced polyurethane layers in key load zones. The materials are treated for improved aging, wear, and corrosion resistance so they maintain shape and function under normal driving conditions.

• Durable rubber construction with polyurethane reinforcement
• Treated for enhanced aging and wear resistance
• Designed to distribute spring load evenly and resist compression set

How difficult is installation and what should I expect?

Installation is straightforward for anyone comfortable with basic suspension work and a jack or lift. The isolators are shaped to match OEM seats and typically swap in after removing the coil spring or using a strut compression method, depending on vehicle location.

• Direct-fit replacement—no modification required
• Requires standard suspension tools and safe jack/lift procedures
• Sold as an 8-piece set covering upper/lower for front and rear

Who is this for: The SUSUPACI 8-piece coil spring isolator kit is intended for owners and technicians of Jeep Grand Cherokee WJ/WG models (1999–2004) who want to silence suspension noise, improve ride comfort, and restore proper spring alignment without replacing springs themselves. It’s a practical maintenance upgrade for vehicles showing wear at spring contact points, those preparing a vehicle for long-term use, or anyone seeking a cost-effective way to refresh suspension performance while preserving OEM fitment and part compatibility.