KYB SR4478 Suspension Strut and Coil Spring Assembly - Front Right

KYB Strut-Plus for Toyota Corolla Front Right

The KYB Strut-Plus SR4478 is a front right suspension strut and coil spring assembly for select Toyota Corolla applications. Built to restore OE ride height, handling, and steering response, it is a direct-fit solution for drivers replacing a worn front suspension unit on a 2014-2019 Toyota Corolla.

Key Features

• OE-style replacement choice for Asian vehicles
• Includes a KYB Excel-G strut with application-specific damping valves
• Uses a stronger steel outer shell for added structural support
• Pre-assembled for professional installation results
• Side-specific design with left and right part numbers as the vehicle manufacturer intended
• Engineered to help vehicles with electronic safety systems such as ESC and ABS
• Assembled in the USA

Product Line Details

KYB Strut-Plus combines a KYB restoring strut with a high-carbon steel coil spring selected around vehicle attributes and corner weights. The goal is to return ride height and suspension control to OE specifications while maintaining the original steering pivot and stability function of the strut assembly. KYB SR4478 is built for the front right position and follows the vehicle’s side-specific suspension design.

What It Helps Address

• Front-end sag or reduced ride height
• Excessive bounce, dive, or body motion
• Worn strut performance that affects steering feel
• Uneven handling after suspension wear
• Suspension replacement needs on a Toyota Corolla front right corner

Installation Notes

Fits 2014-2019 Toyota Corolla, front right. Fits 2019 Toyota Corolla, front right, except Japan-built vehicle. Replace the suspension strut and coil spring assembly according to the manufacturer’s instructions. This part cross-references Monroe Shocks & Struts (e.g., 172184, 172989) for the same application.

Quality Assurance

KYB is an original equipment supplier, and the Strut-Plus line is engineered to restore handling, control, and ride height using OE-focused components and application-specific damping calibration.