Centric 608.66008 Coil Spring Insulator - Rear

Centric Rear Coil Spring Insulator for GM Applications

Centric 608.66008 is a rear coil spring insulator for select Chevrolet, Pontiac, Buick, Saturn, and Oldsmobile vehicles with rear beam axle suspension layouts. It is part of the Centric Premium Steering & Suspension Components line, built for drivers replacing worn spring mounting components on vehicles such as the Chevrolet Uplander and Pontiac Montana.

Key Features

• Rear coil spring insulator for suspension service
• Fits select 1997-2008 GM minivans and crossovers with rear beam axle configurations
• Centric Premium Steering & Suspension Components product line
• Manufactured with advanced materials for resistance to heat and harsh environmental exposure
• Built for consistent spring mounting support and extended service life
• Part number 608.66008 for application lookup and catalog matching

Product Details

Centric 608.66008 is a coil spring insulator used at the rear suspension to isolate the spring from its mounting surface and help maintain proper seating. This part is listed for 2008 Chevrolet Uplander, 2005-2006 Chevrolet Uplander, 1999-2008 Pontiac Montana, 2005-2007 Buick Terraza, 2007 Chevrolet Uplander, 2007 Saturn Relay, 2005-2006 Saturn Relay, 2001-2005 Pontiac Aztek, 1997-2004 Oldsmobile Silhouette, and 1997-1999 Pontiac Trans Sport. The Centric Premium Steering & Suspension Components line focuses on replacement suspension parts for import and domestic vehicles, and this insulator follows that service-part approach for rear suspension repair. Part number 608.66008 is also a useful reference when matching the correct rear spring insulator for these GM platforms.

What It Helps Address

• Noise from worn or deteriorated rear spring mounting points
• Metal-to-metal contact at the coil spring seat
• Loss of proper spring isolation in the rear suspension
• Uneven spring seating caused by aged insulators
• Service needs on Chevrolet Uplander, Pontiac Montana, and related GM models

Installation Notes and Tips

Verify rear suspension configuration before ordering, especially on vehicles noted with beam axle fitment. Compare the original insulator shape and mounting location to confirm application match. Inspect the spring seat, surrounding hardware, and adjacent suspension components for wear before installation. Professional installation is recommended for rear suspension service.

Quality Assurance

Centric manufactures this spring mount and insulator component with materials selected to resist heat and demanding environmental conditions while supporting long service life. Use part number 608.66008 to confirm catalog fitment for the correct rear application.