KYB SM5718 Suspension Coil Spring Seat - Front Upper

KYB SM5718 Suspension Coil Spring Seat

Restore proper suspension support with the KYB SM5718 spring seat for front upper applications. This OE-style replacement is built to reduce squeaks, rattles, and vibration noise caused by worn or hardened insulators, while helping maintain consistent suspension performance.

Compatible with select Nissan and INFINITI models, including the Nissan Altima, Maxima, Murano, Quest, and INFINITI FX35/FX45 front upper applications. The KYB SM5718 is a direct-fit suspension coil spring seat designed for drivers looking to replace deteriorated mount components with a part that matches original equipment expectations.

Key Features

• High-quality replacement spring seat for front upper suspension use
• Reduces squeaks, rattles, and vibration-related noise
• Built to match or exceed original equipment design and quality
• OE-quality replacement component for specific vehicle applications
• KYB Mount Components product line for suspension service

Detailed Description

KYB SM5718 is part of KYB’s Mount Components line, a product group focused on replacing worn suspension contact points that can affect ride comfort and noise control. This spring seat is engineered for application-specific fitment and is used where the original upper spring seat or insulator has hardened, cracked, or lost its ability to isolate vibration. For Nissan Altima, Nissan Maxima, and Nissan Murano front upper suspension service, as well as INFINITI FX35 and FX45 front upper applications, the KYB SM5718 supports a quieter, more controlled suspension response. It is also listed for Nissan Quest front upper use. This part number, SM5718, is a practical OE-style solution when replacing aging suspension coil spring seat components.

What It Helps Fix

• Squeaking from worn spring seat or insulator material
• Rattling noises from deteriorated suspension mount components
• Excess vibration transferred through the front upper suspension
• Loss of cushioning caused by hardened rubber insulators
• Noise and harshness from aging OE spring support parts

Installation Notes and Tips

Install the KYB SM5718 only on the listed front upper applications for the confirmed vehicle fitment. Inspect the surrounding suspension components for wear, corrosion, or damage before reassembly, and replace any compromised parts as needed to maintain proper spring seating and noise isolation. Professional suspension service is recommended because spring-related components are under load.

Quality Assurance

KYB designs Mount Components to provide OE-quality replacement performance for specific applications. The SM5718 spring seat is built with design and quality intended to meet or exceed original equipment expectations for the listed vehicles.