KYB SM5635 Coil Spring Insulator - Front Upper

KYB SM5635 Coil Spring Insulator for Acura RL

Restore quieter suspension operation with the KYB SM5635 coil spring insulator. This Mount Components part is built to replace worn, hardened spring insulators that can transmit vibration and create unwanted noise in the front suspension.

Compatible with 2005-2012 Acura RL front upper applications, the KYB SM5635 is an OE-quality replacement made to match the original design and performance expectations for this vehicle.

Key Features

• OE-quality replacement spring insulator for front upper suspension use
• Helps reduce squeaks, rattles, and vibration noise
• Built to match or exceed original equipment design and quality
• Part of KYB Mount Components for suspension service work
• Fits 2005-2012 Acura RL, front upper

Product Details

KYB Mount Components are engineered for suspension service where worn rubber or isolator parts can affect ride quality and noise control. The SM5635 coil spring insulator is designed to sit at the spring seat area and help isolate the spring from the surrounding suspension structure. For Acura RL owners, this can be an important repair when the original insulator has hardened, cracked, or compressed over time. The KYB SM5635 is a direct-fit service part for 2005-2012 Acura RL front upper applications and is a practical choice when replacing suspension wear items during front-end maintenance.

This part cross-references Acura 51686SJA003 for the same application.

What It Helps Fix

• Squeaking from the front suspension
• Rattling or clunking caused by worn spring isolation material
• Vibration noise transferred through aged insulators
• Ride harshness related to deteriorated spring seat components
• Noise complaints during braking, turning, or road impact events

Installation Notes

Install the insulator in the front upper spring location specified for the vehicle. Inspect the surrounding spring seat and suspension hardware for wear, corrosion, or damage before reassembly. Because spring and suspension components are under load, proper service procedures and safe compression tools should be used during installation.

Quality Assurance

KYB is known for OE-style suspension replacement parts, and the Mount Components line is focused on restoring factory-level fit and function for service applications. The SM5635 is built with design and quality intended to meet the demands of the original suspension layout on the Acura RL.