KYB SM5648 Coil Spring Insulator - Front Lower

KYB SM5648 Coil Spring Insulator

KYB SM5648 is a front lower coil spring insulator for select Toyota and Lexus applications. It is built to replace worn vibration insulators that can create noise and reduce suspension refinement.

Compatible with 2004-2006 Toyota Sienna, front lower; 2002-2003 Toyota Camry, front lower; 2002-2003 Lexus ES300, front lower; and 1999-2000 Lexus RX300, front lower.

Key Features

• OE-style replacement spring insulator for the front lower suspension mount
• Helps reduce squeaks, rattles, and vibration noise from aged insulators
• Built to match or exceed original equipment design and quality
• Supports quieter suspension operation and more consistent spring seating
• KYB Mount Components line focuses on replacement suspension mounting parts for specific applications

Product Details

The KYB Mount Components line is engineered for suspension service where worn mounting and isolating parts can affect ride quality. SM5648 is a coil spring insulator made for application-specific fitment, helping restore proper spring isolation at the front lower position. For drivers searching for a Toyota Sienna front lower coil spring insulator, a Toyota Camry front lower spring seat insulator, or a Lexus ES300 and RX300 replacement insulator, KYB SM5648 provides a direct-fit service part for those listed vehicles.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Fix

• Squeaks from hardened or deteriorated spring insulators
• Rattles caused by worn suspension isolation points
• Vibration noise transmitted through the front lower spring seat
• Poor spring cushioning from aged rubber isolators
• Loss of OE-like suspension refinement on listed Toyota and Lexus models

Installation Notes

Install SM5648 during suspension service when the original insulator shows cracking, hardening, or compression set. Inspect the spring seat, strut assembly, and surrounding mounting surfaces before reassembly. Proper alignment of the spring and insulator is important for quiet operation and correct seating.

Quality Assurance

KYB states that its spring seats and insulators are designed as OE-quality replacement components for each application, with construction intended to meet or exceed original equipment design standards.