KYB SR4008 Suspension Strut and Coil Spring Assembly - Rear Left

KYB Strut-Plus Rear Left Strut Assembly

The KYB Strut-Plus SR4008 is a rear left suspension strut and coil spring assembly built to restore ride height, handling, and steering response on select compact Ford, Mercury, and Mazda applications. It combines OE-style fitment with application-specific damping and a pre-assembled design for professional-grade replacement work.

Key Features

• Includes a KYB Excel-G strut with application-specific precision damping valves
• Uses a stronger steel outer shell for added structural support
• Side-specific design for the rear left position, as the vehicle manufacturer intended
• Pre-assembled for exact fitment and professional results
• Engineered to help vehicles with electronic safety systems such as ESC and ABS
• High-carbon steel coil spring is selected to help restore OE ride height based on vehicle weight and corner loads

Product Details

KYB designed the Strut-Plus line for drivers who need a complete suspension strut and coil spring assembly that follows original equipment requirements. The SR4008 uses KYB’s OE-restoring strut design and a vehicle-specific spring to help return the suspension to proper height and control. This matters on vehicles where the strut also serves as a steering pivot and contributes to stability, braking behavior, and electronic crash-avoidance performance.

This part cross-references Monroe Shocks & Struts 171880 for the same application. It is a direct-fit suspension solution for 1991-1996 Ford Escort rear left, 1991-1996 Mercury Tracer rear left, 1990-1994 Mazda 323 rear left, and 1990-1994 Mazda Protege rear left. The KYB SR4008 is a practical choice when replacing a worn rear left strut assembly on these vehicles.

What It Helps Fix

• Excessive bouncing or poor rear suspension control
• Sagging ride height from a weakened coil spring
• Uneven handling or reduced corner stability
• Noisy or worn rear strut assembly components
• Loss of OE ride feel on Ford Escort, Mercury Tracer, Mazda 323, or Mazda Protege models

Installation Notes

Fits 1991-1996 Ford Escort, rear left. Fits 1991-1996 Mercury Tracer, rear left. Fits 1990-1994 Mazda 323, rear left, excluding electronic adjustable suspension. Fits 1990-1994 Mazda Protege, rear left. Replace the suspension strut and coil spring assembly according to the manufacturer’s instructions. Verify rear left application, suspension configuration, and model-year coverage before installation.

Quality Assurance

KYB is an original equipment supplier, and the Strut-Plus line is engineered to restore handling and control with OE-style fitment and vehicle-specific damping. The SR4008 is built to support proper suspension performance on the listed applications, including vehicles equipped with electronic safety systems.