SUSUPACI Coil Spring Isolator Kit for Jeep Grand Cherokee WJ/WG 1999-2004 — 8-Piece Front & Rear Rubber/Polyurethane

SUSUPACI 8-piece coil spring isolator kit restores quiet, stable suspension for Jeep Grand Cherokee WJ/WG models from 1999–2004.

This complete set of front and rear, upper and lower spring insulators is designed as a direct-fit replacement for worn factory pieces. Made from robust rubber with reinforced polyurethane characteristics, the kit matches OEM dimensions and part numbers so you can quickly refresh suspension performance and reduce road noise. It includes parts that correspond to K160040, K160041, K160061, K160042 and Chrysler part numbers 52088257AB, 52088401AB, 52088346AB, 52088402AB.

How will these isolators affect everyday ride comfort?

Replacing degraded isolators with fresh rubber pieces minimizes metal-to-metal contact and absorbs vibration, yielding a noticeably quieter cabin and a smoother ride. The isolators reduce harshness from bumps and small road imperfections without changing the spring rate.

• Reduces suspension-transmitted noise and rattle.
• Improves passenger comfort on city roads and highways.
• Lessens shock transfer from potholes and uneven pavement.

Will this kit fit my Jeep Grand Cherokee WJ or WG?

The kit is built to fit WJ and WG generation Grand Cherokee models from 1999 through 2004. Each piece corresponds to the OEM locations—front upper, front lower, rear upper, and rear lower—so installation follows original mount points.

• Compatibility: Jeep Grand Cherokee WJ/WG 1999–2004.
• Direct replacements for K160040, K160041, K160061, K160042.
• Includes eight pieces to cover both front and rear springs.

What are the materials and durability features of these isolators?

SUSUPACI uses high-quality rubber compounds with reinforced polyurethane characteristics for enhanced wear resistance and anti-aging performance. These materials resist compression set and environmental corrosion, helping them maintain shape and isolation properties over thousands of miles.

• Durable rubber optimized for aging and wear resistance.
• Polyurethane reinforcement for higher pressure tolerance.
• Designed to maintain spring alignment and load distribution.

How do these isolators help suspension longevity and handling?

Properly functioning isolators distribute spring loads more evenly and prevent metal components from contacting each other, which reduces stress on mounts and the chassis. That smoother load transfer preserves other suspension parts and helps keep handling predictable under normal driving conditions.

• Prevents uneven spring compression and localized wear.
• Reduces impact stress on mounts, bushings, and struts.
• Maintains consistent spring seating for better steering response.

Who is this for: This 8-piece SUSUPACI kit is ideal for owners of Jeep Grand Cherokee WJ/WG (1999–2004) who hear spring noise, feel increased harshness, or want to proactively replace aging rubber isolators during suspension service. It suits DIY mechanics and professional repair shops needing an OEM-compatible set to restore ride comfort and protect other suspension components. The product comes with a one-year warranty and is intended for standard road use; follow vehicle service practices for safe installation.