KYB SM5800 Coil Spring Insulator - Front Upper

KYB SM5800 Coil Spring Insulator

KYB SM5800 is a front upper coil spring insulator from the Mount Components line, built to replace worn vibration isolators that can create noise and harshness in the suspension. It is an OE-style replacement for select Buick, Chevrolet, and Cadillac applications, including the Buick Encore, Chevrolet Trax, and Chevrolet Cruze.

Key Features

• High-quality replacement spring seat and insulator for front upper suspension locations
• Helps reduce squeaks, rattles, and vibration noise from aged insulators
• Built to match or exceed original equipment design and quality
• Supports smoother suspension operation by restoring proper spring isolation
• KYB SM5800 is engineered for application-specific fitment

Product Details

The KYB Mount Components line focuses on suspension mounting parts that restore the interface between the coil spring and the strut assembly. SM5800 is designed for vehicles where the original spring seat or insulator has hardened, cracked, or compressed over time. By renewing that contact point, this part helps maintain quieter operation and more consistent suspension performance. This part cross-references General Motors 13257840 for the same application.

Compatible With 2013-2022 Buick Encore, front upper; 2015-2022 Chevrolet Trax, front upper; 2016-2017 Buick Cascada, front upper; 2012-2017 Buick Verano, front upper; 2014-2016 Cadillac ELR, front upper; 2016 Chevrolet Cruze Limited, front upper; 2011-2015 Chevrolet Cruze, front upper; and 2011-2015 Chevrolet Volt, front upper. KYB SM5800 is a direct-fit suspension service part for these front upper applications.

Common Issues It Can Help Address

• Squeaking or creaking from the front suspension
• Rattling or clunking caused by worn spring isolation parts
• Excess vibration transferred through the strut mount area
• Noise from hardened or deteriorated coil spring insulators
• Loss of proper spring seating at the front upper mount

Installation Notes

Install SM5800 at the front upper spring seat/insulator location specified for the vehicle. Inspect the surrounding mount components, boot, and bumper during service, since worn adjacent parts can also contribute to noise and ride issues. Verify the vehicle application by year, make, model, and position before installation.

Quality Assurance

KYB is known for suspension replacement components that follow OE-style design standards. The Mount Components line is intended to restore original fit and function for the specified application, and SM5800 is built with the quality expected for suspension service on these GM and Chevrolet platforms.