Moog CC640 Coil Spring Set - Front

Moog CC640 Coil Spring Set Overview

The Moog CC640 coil spring set is engineered for Chevrolet Astro and GMC Safari vehicles, providing reliable suspension support with precise specifications. Designed to maintain proper ride height and improve load handling, this coil spring set is a practical choice for restoring suspension performance.

• Variable rate coil springs with a spring rate of 622 lbs per inch
• Wire diameter of 0.81 inches (20.60 mm) for durability
• Black spring color for corrosion resistance and clean appearance
• Front and rear spring outside diameter of 5.730 inches (145.54 mm)
• Free height of 15.54 inches (394.70 mm) and compressed length of 12.00 inches (304.80 mm)
• Load capacity of 2000 lbs to support vehicle weight and cargo
• Squared and tangential end types for proper fitment and installation

Detailed Product Description

The Moog CC640 coil spring set is specifically designed for the Chevrolet Astro and GMC Safari models, ensuring compatibility and optimal suspension performance. These variable rate springs provide a progressive spring rate of 622 lbs per inch, which allows for a smoother ride under normal conditions and increased stiffness under heavier loads. The coil springs feature a wire diameter of 0.81 inches (20.60 mm) and a black finish that helps resist corrosion and wear over time.

Both front and rear springs share identical dimensions, including an outside diameter of 5.730 inches and a free height of 15.54 inches, which compresses to 12.00 inches during operation. The springs are designed with squared and tangential ends to ensure proper seating and alignment within the suspension system. With a load capacity of 2000 lbs, these springs support the vehicle’s weight and additional cargo, maintaining ride height and handling characteristics.

Common Suspension Issues Addressed

• Sagging or lowered ride height due to worn or fatigued springs
• Uneven vehicle stance affecting handling and tire wear
• Reduced load carrying capacity impacting vehicle stability
• Harsh or uncomfortable ride caused by inconsistent spring rates
• Corrosion or damage to original coil springs compromising safety

Installation Notes and Tips

When installing the Moog CC640 coil spring set on Chevrolet Astro or GMC Safari vehicles, ensure the springs are oriented correctly with the squared and tangential ends seated properly. It is recommended to inspect related suspension components such as shocks and mounts during installation. Use appropriate tools and follow vehicle-specific service manuals to maintain safety and proper alignment.

Quality Assurance and Warranty

Moog coil springs are manufactured to meet or exceed OEM specifications, providing consistent performance and durability. While specific warranty details for part number CC640 are not provided here, Moog products typically come with a limited warranty against defects in materials and workmanship. Refer to Moog’s official documentation for complete warranty information.