KYB SM5649 Coil Spring Insulator - Front Lower

KYB SM5649 Coil Spring Insulator

KYB SM5649 is a front lower coil spring insulator built to replace worn vibration isolators that can create noise and harshness in the suspension. It is an OE-quality mount component for select Toyota and Lexus applications, including the Toyota Camry, Toyota Avalon, and Lexus ES350.

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
• Engineered for application-specific fitment in front lower suspension locations
• Part number SM5649 for easy identification and ordering

Product Details

As part of KYB’s Mount Components line, the SM5649 spring seat and insulator is made for drivers who want a direct replacement for deteriorated suspension isolators. KYB focuses on OE-style replacement components that restore proper spring seating and help maintain suspension performance. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Compatible With 2004-2011 Toyota Camry, front lower; 2004-2012 Toyota Avalon, front lower; 2007-2012 Lexus ES350, front lower; 2004-2006 Lexus ES330, front lower; 2005-2008 Toyota Solara, front lower; and 2007-2010 Toyota Sienna, front lower. The KYB SM5649 is a practical replacement when the original insulator has hardened, cracked, or lost its ability to isolate spring vibration.

Common Issues This Part Can Address

• Squeaking or rattling from the front suspension
• Vibration noise transmitted through the coil spring area
• Worn, hardened, or cracked spring insulators
• Reduced isolation between the spring and its mounting seat
• Noise complaints after suspension inspection or service

Installation Notes and Tips

Install the SM5649 during front suspension service when the coil spring is removed and the insulator can be inspected closely. Confirm the vehicle’s year, model, and front lower application before installation, and compare the original insulator shape and seating surfaces to ensure proper alignment. For best results, inspect adjacent suspension components for wear while the spring assembly is apart.

Quality Assurance

KYB spring seats and insulators are built as OE-quality replacement components for specific applications, with design and material standards intended to support proper suspension function and noise isolation.