Moog 656 Coil Spring Set - Front

Overview of Moog Coil Spring Set 656

The Moog Coil Spring Set 656 is engineered for reliable suspension performance on classic vehicles. Designed specifically for Buick Bel Air, Chevrolet Bel Air, and Pontiac Firebird and Skylark models, this coil spring set ensures consistent ride height and handling characteristics.

• Wire diameter options: 0.64 inches and 16.30 mm for strength and durability
• Black spring color for corrosion resistance and a clean appearance
• Front and rear spring outside diameter: 4.910 inches
• Front and rear spring relaxed length: 17.38 inches (441.50 mm)
• Front and rear spring compressed length: 11.19 inches (284.20 mm)

Technical Specifications and Design Details

The Moog Coil Spring Set 656 features a wire diameter of 0.64 inches (16.30 mm), providing a balance between flexibility and load-bearing capacity. Both front and rear springs share identical dimensions, with an outside diameter of 4.910 inches and a relaxed length of 17.38 inches (441.50 mm). When compressed, the springs measure 11.19 inches (284.20 mm), allowing for effective suspension travel and shock absorption. The black finish enhances corrosion resistance, extending the service life of the springs under various driving conditions.

Compatible Vehicles and Applications

This coil spring set is compatible with select classic American vehicles, including:

• Buick Bel Air
• Chevrolet Bel Air
• Pontiac Firebird
• Pontiac Skylark

Part number 656 is designed to maintain factory suspension geometry and ride height, making it suitable for restoration projects or replacement of worn springs on these models.

Common Suspension Issues Addressed

• Sagging or uneven ride height in front or rear suspension
• Reduced handling stability due to worn or fatigued springs
• Excessive body roll during cornering
• Increased suspension noise or harshness
• Uneven tire wear caused by improper suspension support

Installation Notes and Tips

When installing the Moog Coil Spring Set 656, ensure the vehicle is securely lifted and supported. It is recommended to replace springs in pairs (front or rear) to maintain balanced suspension performance. Verify spring orientation and seating to prevent premature wear or noise. After installation, a professional wheel alignment is advised to restore proper handling characteristics.

Quality Assurance and Warranty

Moog is recognized for manufacturing suspension components that meet or exceed OEM specifications. The Coil Spring Set 656 undergoes rigorous quality control to ensure durability and consistent performance. While specific warranty details are not provided, Moog products typically come with a limited warranty against defects in materials and workmanship.