SUSUPACI Coil Spring Isolators Kit for Jeep Grand Cherokee WJ/WG 1999–2004 — 8‑Piece Front & Rear Upper/Lower, OEM Fit & Durable R

If your Grand Cherokee is showing creaks, clunks, or a harsher ride, the rubber spring isolators that sit between coil springs and mounting points often wear out first. This SUSUPACI kit supplies all eight positions — front and rear, upper and lower — engineered to match OEM fit and restore proper spring alignment, load distribution, and dampening. Made from durable rubber with reinforced polyurethane layers, the parts resist aging, tearing, and corrosion for longer service life.

How will these isolators change how my Jeep feels on the road?

Worn or missing insulators let metal contact metal and transmit road impacts into the cabin. Replacing them reduces vibration, softens harshness from bumps, and cuts suspension noise, making daily driving and off-road use quieter and more controlled.

• Reduces creaks and clunks caused by direct spring-to-mount contact.
• Improves ride smoothness by absorbing small impacts and vibrations.
• Helps maintain correct spring seating for predictable handling.

Are these parts a direct replacement for my factory insulators?

Yes — the SUSUPACI set is designed to meet OEM dimensions for Jeep Grand Cherokee WJ/WG model years 1999 through 2004. Each piece corresponds to common factory part numbers so installation uses the same mounting locations without modification.

• Complete kit includes front upper, front lower, rear upper, and rear lower isolators (8 pieces).
• Direct fit for part numbers K160040, K160041, K160061, K160042 and corresponding Mopar numbers.
• No cutting or custom adapters required for correct installation.

What materials and durability can I expect from this kit?

The isolators use high-grade rubber reinforced with polyurethane layers to resist cracking, abrasion, and deformation under load. The combination improves aging resistance and helps the components withstand repeated compression cycles from normal driving and towing.

• Premium rubber compound for flexibility and vibration damping.
• Reinforced polyurethane for higher pressure resistance and longer life.
• Black finish resists environmental exposure and road contaminants.

How do I know when to replace my coil spring insulators?

Replace isolators if you hear suspension noises, notice uneven ride height, or see visible wear or cracking on the mounts. Routine inspection during shock or spring service is recommended since degraded insulators accelerate other suspension wear.

• Common signs: squeaks, clunks, or a rougher-than-normal ride.
• Visible damage: torn, flattened, or hard, brittle rubber surfaces.
• Replace proactively during spring or strut maintenance to protect other components.

Who is this for: The SUSUPACI 8-piece coil spring isolator kit is aimed at Jeep owners, DIY mechanics, and independent shops restoring ride quality on Grand Cherokee WJ/WG models from 1999–2004. If you want a direct-fit, durable replacement to cut cabin noise, protect suspension parts, and return handling to expected levels without costly spring or strut replacement, this complete kit is a practical and economical solution. The parts come with a one-year warranty and are intended for owners who prioritize longevity and OEM-compatible fitment.