KYB SR4270 Suspension Strut and Coil Spring Assembly - Front Left

KYB Strut-Plus SR4270 Overview

The KYB Strut-Plus SR4270 is a complete front left suspension strut and coil spring assembly for select Ford Fusion and Mercury Milan models. Built to restore ride height, steering response, and stability, it combines OE-style fitment with application-specific damping and a pre-assembled design for professional repair work.

Compatible with 2010-2012 Ford Fusion front left and 2010-2011 Mercury Milan front left, this KYB Strut-Plus assembly is engineered for direct replacement service on vehicles equipped with electronic safety systems such as ESC and ABS.

Key Features

• Complete strut assembly engineered to restore handling and control
• Includes a KYB Excel-G strut with precision-designed damping valves
• High carbon steel coil spring developed around vehicle attributes and corner weights
• Stronger steel outer shell for added structural support
• Exact fitment, pre-assembled for professional installation results
• Side-specific design with left and right part numbers as the vehicle manufacturer intended
• Engineered to work with electronic safety systems including ESC and ABS
• Assembled in the USA

Product Line Details

KYB Strut-Plus is KYB’s complete strut assembly line for OE-style suspension service. The SR4270 follows that approach by pairing a restoring KYB strut with a matched coil spring and side-specific components, helping return the front suspension geometry and ride height to factory specifications on the Ford Fusion and Mercury Milan.

Detailed Description

As an OE supplier, KYB designs suspension components around how the vehicle should ride, steer, and respond on the road. The SR4270 is built to replace the front left strut and coil spring assembly on 2010-2012 Ford Fusion and 2010-2011 Mercury Milan models, with attention to ride height, stability, and steering pivot function. This part number, SR4270, is a direct-fit solution for drivers and technicians looking to restore suspension performance without piecing together separate components.

This part cross-references Monroe Shocks & Struts (e.g., 172596, 272596) for the same application.

What It Helps Address

• Front-end sag or uneven ride height
• Excessive bounce, body motion, or reduced damping control
• Loose or imprecise steering feel from worn strut components
• Noise or instability caused by a fatigued strut and spring assembly
• Suspension performance concerns on vehicles with ESC or ABS systems

Installation Notes and Tips

Install the SR4270 on the front left position only, following the vehicle manufacturer’s instructions for strut and coil spring assembly replacement. Verify side-specific orientation before installation, and confirm that the replacement matches the vehicle’s year, make, model, and position. Because this is a pre-assembled suspension strut and coil spring assembly, it is suited to professional suspension service where exact fitment matters.

Quality Assurance

KYB is an original equipment supplier, and the Strut-Plus line is engineered to restore OE-level ride height, handling, and control characteristics. The SR4270 is assembled in the USA and built with application-specific components for consistent suspension service on compatible Ford Fusion and Mercury Milan applications.