Moog 81158 Coil Spring Set - Front

Moog Coil Spring Set for Chevrolet Cobalt, Pontiac G5, and HHR

The Moog 81158 coil spring set is engineered to restore suspension performance for select Chevrolet and Pontiac models. Designed with precise dimensions and durable materials, this coil spring set ensures consistent ride height and handling characteristics for your vehicle.

• Wire diameter: 0.515 inches for optimal strength and flexibility
• Spring color: Black, providing corrosion resistance and a clean appearance
• Front and rear spring outside diameter: 5.840 inches for proper fitment
• Front and rear spring relaxed length: 13.275 inches to maintain factory ride height
• Front and rear spring compressed length: 3.049 inches for effective suspension travel

Detailed Product Description

The Moog 81158 coil spring set is specifically designed for the Chevrolet Cobalt, Pontiac G5, and Chevrolet HHR models. Each spring features a wire diameter of 0.515 inches, balancing strength and flexibility to absorb road impacts while maintaining vehicle stability. The black finish helps resist corrosion, extending the life of the springs under various driving conditions. Both front and rear springs share identical outside diameters and lengths, ensuring uniform suspension performance across all wheels. The relaxed and compressed lengths are engineered to match factory specifications, preserving the original ride height and suspension geometry for safe and predictable handling.

Common Suspension Issues Addressed

• Sagging or lowered ride height due to worn or fatigued springs
• Uneven tire wear caused by improper suspension alignment
• Reduced handling stability and increased body roll
• Excessive suspension noise or harshness
• Compromised vehicle safety from weakened suspension components

Installation Notes and Tips

When installing the Moog 81158 coil spring set, 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 that the spring orientation matches factory specifications and inspect related suspension components for wear. After installation, a professional wheel alignment is advised to optimize handling and tire life.

Quality Assurance and Warranty

Moog coil springs are manufactured to meet or exceed OEM standards, providing reliable performance and durability. The 81158 coil spring set undergoes rigorous quality control to ensure consistent dimensions and material integrity. For warranty details, refer to Moog's official documentation or contact authorized distributors.