KYB SM5639 Suspension Strut Mount - Front

KYB SM5639 Front Strut Mount

KYB SM5639 is a front suspension strut mount built to replace worn vibration insulators and restore quieter operation at the strut tower. It is engineered for OE-style fit and function, helping reduce road harshness while supporting steering response and front-end alignment.

Key Features

• OE-quality replacement strut mount for front suspension service
• Superior rubber helps reduce noise, vibration, and harshness
• Mount bearing supports smoother steering input and alignment retention
• Matched-grade studs and nuts for application-specific fitment
• Designed to cushion road impacts that old mounts can transmit into the cabin

Product Details

KYB Mount Components are built for drivers who want a direct replacement that follows the original equipment design approach. The SM5639 strut mount helps isolate the suspension from the body, reducing the clunking, vibration, and steering feel issues that can develop as factory mounts age and harden. This part cross-references Monroe Shocks & Struts (e.g., 906988) for the same application. It is a front mount component for vehicles including 2006-2008 Toyota RAV4, 2008-2015 Scion xB, 2011-2017 Lexus CT200h, 2016 Scion iM, and 2017-2018 Toyota Corolla iM.

What It Helps Fix

• Front-end noise from worn or hardened strut mounts
• Excess vibration transferred through the suspension
• Harsh impact feel over bumps and rough pavement
• Loose or imprecise steering response caused by worn mount bearings
• Alignment instability related to front bearing plate wear

Installation Notes

Install the KYB SM5639 on the front suspension only and verify the vehicle application before service. Because strut mounts affect steering pivot and wheel alignment, inspect related suspension parts and perform an alignment after installation when required by the repair procedure. For fitment-specific searches, this part is commonly selected for a front strut mount on 2006-2008 Toyota RAV4, 2008-2015 Scion xB, and 2011-2017 Lexus CT200h.

Quality Assurance

KYB designs Mount Components as OE-quality replacement parts for each application, with a focus on restoring suspension performance and reducing noise and vibration. The SM5639 reflects KYB’s reputation for precision-fit suspension service parts and consistent front-end control.