KYB SM5708 Coil Spring Insulator - Front Upper

KYB SM5708 Coil Spring Insulator

Restore quieter suspension operation with the KYB SM5708 coil spring insulator. This front upper mount component is built to replace worn, hardened insulators that can transmit vibration and create noise in daily driving.

Compatible with 2002-2006 Nissan Altima, front upper, and 2004-2008 Nissan Maxima, front upper, this KYB Mount Components part is designed for direct-fit service on the specified applications. The SM5708 helps maintain proper spring isolation while supporting OE-style suspension performance.

Key Features

• High-quality replacement spring insulator for front upper suspension service
• Reduces squeaks, rattles, and vibration noise from aged insulators
• Built to match or exceed original equipment design and quality
• Part of KYB Mount Components for application-specific suspension repair
• Cross-references Nissan 54034ZK00A and 540348J001 for the same application

Detailed Description

KYB SM5708 is a coil spring insulator engineered for vehicles that need renewed spring isolation at the front upper suspension mount. KYB spring seats and insulators are developed as OE-quality replacement components for each application, helping preserve suspension feel while addressing noise caused by old, hardened vibration insulators. For Nissan Altima and Nissan Maxima service, the SM5708 provides a focused repair solution that supports quieter operation and consistent suspension performance.

The KYB Mount Components line is built around application-specific suspension hardware, giving technicians and vehicle owners a direct replacement option for worn spring seats and insulators. If you are searching for a front upper coil spring insulator for a 2002-2006 Nissan Altima or a 2004-2008 Nissan Maxima, the KYB SM5708 is the correct OE-style service part to consider.

What It Helps Address

• Squeaks from deteriorated spring insulation
• Rattles at the front upper suspension mount
• Vibration noise transferred through hardened insulators
• Loss of quiet, stable spring isolation
• Wear-related noise during normal road use

Installation Notes and Tips

Install the SM5708 on the specified front upper position only. Inspect the surrounding suspension components for wear, corrosion, or damage before reassembly, and replace any related parts that show deterioration. Proper seating of the spring insulator is important for noise control and suspension alignment during service.

Quality Assurance

KYB positions this Mount Components part as an OE-quality replacement built to the design and quality standards expected for the application. The SM5708 is intended to restore the function of the original spring insulator on the listed Nissan vehicles while helping reduce unwanted suspension noise.