KYB SR4155 Suspension Strut and Coil Spring Assembly - Front Left

KYB Strut-Plus Front Left Assembly for Sienna

The KYB Strut-Plus SR4155 is a pre-assembled suspension strut and coil spring assembly for the front left position. It is built to restore ride height, steering response, and vehicle stability on the 2007-2010 Toyota Sienna with 8 passenger seating.

Key Features

• OE-style replacement choice for Asian vehicles
• Includes a KYB Excel-G strut, steel outer shell, and application-specific damping valves
• High carbon steel coil spring is matched to vehicle attributes and corner weights
• Exact fitment, pre-assembled for professional results
• Side-specific design for the left front position as the vehicle manufacturer intended
• Engineered to support vehicles with electronic safety systems such as ESC and ABS
• Assembled in the USA
• Recipient of a 2018 industry award in the import aftermarket category

Product Details

KYB Strut-Plus SR4155 combines a KYB OE-restoring strut with a coil spring engineered to return ride height within OE specifications. As part of the KYB Strut-Plus line, this assembly is built for direct replacement service on the 2007-2010 Toyota Sienna front left corner, with side-specific components that follow the original vehicle layout. This part cross-references Monroe Shocks & Struts (e.g., 172366, 172981) for the same application.

What It Helps Address

• Excessive front-end bounce or poor damping control
• Sagging ride height at the front left corner
• Loose or imprecise steering feel
• Uneven suspension response after strut wear
• Stability concerns on vehicles equipped with ESC, ABS, and related systems

Installation Notes and Tips

Fits 2007-2010 Toyota Sienna, front left, with 8 passenger seating. Verify the vehicle trim and seating configuration before ordering, and confirm left-side application match during installation. Because this is a pre-assembled strut and spring unit, it is suited for professional suspension service and direct replacement of the original front left assembly. KYB SR4155 is engineered for exact fitment on the Toyota Sienna platform.

Quality Assurance

KYB is an original equipment supplier, and the Strut-Plus line is engineered to restore handling and control characteristics while maintaining OE-style ride height and fit. KYB SR4155 is assembled in the USA and built with application-specific damping and side-specific components for the intended front left position.