KYB SR4178 Suspension Strut and Coil Spring Assembly - Front Left

Overview of KYB Strut-Plus Suspension Strut for Toyota Sienna

The KYB Strut-Plus SR4178 is a complete suspension strut and coil spring assembly designed specifically for the Toyota Sienna. This assembly provides a direct replacement solution that restores the original ride height and handling characteristics of your vehicle.

• Complete suspension strut and coil spring assembly
• Compatible with Toyota Sienna models
• Part number SR4178 for precise fitment
• Includes pre-assembled coil spring for easier installation
• Designed to restore factory ride height and suspension performance

About the KYB Strut-Plus Product Line

The Strut-Plus line from KYB offers fully assembled suspension struts combined with coil springs, providing a convenient and reliable replacement option. This product line is engineered to match the original equipment specifications, ensuring consistent ride quality and handling. The Strut-Plus assemblies reduce installation time by eliminating the need to compress springs separately, making it a practical choice for Toyota Sienna owners seeking a direct-fit suspension upgrade.

Detailed Product Description

The KYB Strut-Plus SR4178 is engineered as a suspension strut and coil spring assembly tailored for the Toyota Sienna. This assembly integrates the shock absorber and coil spring into a single unit, which helps maintain the vehicle’s original suspension geometry and ride height. The pre-assembled design simplifies installation and reduces the risk of improper spring compression. This part number SR4178 is manufactured to meet or exceed OEM standards, ensuring durability and consistent performance under normal driving conditions.

Common Suspension Issues Addressed

• Uneven or sagging ride height on Toyota Sienna
• Excessive bouncing or poor shock absorption
• Noise or clunking from worn suspension components
• Reduced handling stability and control
• Difficulty maintaining proper wheel alignment

Installation Notes and Tips

• Ensure compatibility with your specific Toyota Sienna model before installation
• Use proper tools to safely remove the old strut assembly
• Verify that the coil spring is securely seated in the assembly
• Check wheel alignment after installation to maintain handling performance
• Follow vehicle manufacturer torque specifications for mounting hardware

Quality Assurance and Warranty

KYB manufactures the Strut-Plus SR4178 to meet strict quality control standards, ensuring reliable performance and durability. While specific warranty details may vary, KYB typically offers coverage against defects in materials and workmanship. Refer to KYB’s official warranty documentation for complete terms and conditions.