KYB SM5709 Coil Spring Insulator - Front Lower or Front Upper

KYB SM5709 Coil Spring Insulator

KYB SM5709 is a coil spring insulator built to replace worn spring seats that can create vibration, squeaks, and rattles in the suspension. It is an OE-quality mount component engineered for specific applications, including Nissan Quest, INFINITI FX35, INFINITI FX45, and Nissan Murano fitments.

Key Features

• High-quality replacement spring insulator for suspension service
• Reduces squeaks, rattles, and vibration noise from aged insulators
• Built to match or exceed original equipment design and quality
• Part number SM5709 for accurate ordering and fitment lookup
• KYB Mount Components line for suspension mounting applications

Product Details

KYB’s Mount Components line focuses on suspension mounting parts that restore proper spring seating and help maintain quiet operation. This coil spring insulator is designed for direct replacement use on select vehicles, including 2004-2009 Nissan Quest, front upper; 2003-2008 INFINITI FX35, front upper; 2003-2008 INFINITI FX45, front upper; and 2003-2007 Nissan Murano, front lower. This part cross-references Monroe Shocks & Struts (e.g., 908975) for the same application. If you are searching for KYB SM5709 for a Nissan Murano front lower spring insulator or an INFINITI FX35 front upper coil spring insulator, this part matches those listed applications.

Common Problems It Helps Address

• Squeaking from worn spring seat material
• Rattling noises from deteriorated suspension insulators
• Vibration transferred through the spring mount area
• Noise caused by hardened or cracked original insulators
• Loss of proper spring seating at the mount point

Installation Notes

Verify the vehicle year, model, and suspension position before ordering. Fitment includes 2004-2009 Nissan Quest, front upper; 2003-2008 INFINITI FX35, front upper; 2003-2008 INFINITI FX45, front upper; and 2003-2007 Nissan Murano, front lower. Inspect the surrounding suspension components for wear before installation, and confirm the spring seat area is clean and free of damage so the new insulator can seat correctly.

Quality Assurance

KYB states that its spring seats and insulators are engineered as OE-quality replacement components for the listed applications. The SM5709 is part of KYB’s Mount Components product line, which is built to support proper suspension performance and reduce noise from worn mounting parts.