Dorman 540-906 Coil Spring Insulator - Rear Upper

Dorman 540-906 Coil Spring Insulator

Dorman 540-906 is a specific-fit coil spring insulator for the rear upper position on select Jeep Grand Cherokee models. It helps isolate the coil spring from the suspension perch to support quieter operation and consistent spring seating.

Key Features

• Precision-engineered replacement for the original equipment insulator
• Specific fit for select applications
• Rubber elastomer construction with a black finish
• Circular shape with mounting hole attachment type
• Designed for the rear upper suspension position
• Compatible with 1999-2004 Jeep Grand Cherokee, rear upper

Detailed Description

This coil spring insulator is built to match the original equipment form and function on 1999-2004 Jeep Grand Cherokee rear upper suspension applications. Dorman 540-906 uses rubber elastomer material to help separate the coil spring from the mounting surface, which supports proper spring placement and reduces direct metal-to-metal contact. The part number 540-906 is a direct replacement choice for drivers servicing the rear upper suspension on a Jeep Grand Cherokee.

This part cross-references MOOG Chassis Products K160061 and Delphi TD4657W for the same application.

What It Helps Address

• Noise from worn or hardened spring isolators
• Improper coil spring seating at the rear upper mount
• Vibration transfer through the suspension perch
• Suspension wear caused by deteriorated rubber components
• Loss of OE-style fit in the spring mounting area

Installation Notes and Tips

Verify the rear upper location before installation and compare the new insulator to the removed part for shape, diameter, and thickness. Clean the spring seat and surrounding mounting surface before assembly to help the insulator sit evenly. Dorman 540-906 is a specific-fit part for select Jeep Grand Cherokee vehicles, so confirm year and position match the application before service.

Quality Assurance

Dorman states that this coil spring insulator is precision-engineered and rigorously tested to provide a reliable replacement for the original equipment on specific vehicles. The part is built for direct-fit service on the listed application.