KYB SM5823 Coil Spring Insulator - Front Upper

KYB SM5823 Mount Components Overview

KYB SM5823 is a suspension mount component built to replace worn vibration insulators that can transmit noise and harshness into the cabin. It is designed for front upper applications on select Ford, Lincoln, Mercury, and Mazda vehicles, including the Ford Fusion, Lincoln MKZ, Mercury Milan, and Mazda 6.

As part of KYB’s Mount Components line, this replacement focuses on restoring OE-style suspension feel and steering response. The KYB SM5823 helps address the effects of aged rubber and worn mount bearings that can affect alignment stability and ride quality.

Key Features

• OE-quality replacement strut mount component for the specified application
• Superior rubber construction reduces noise, vibration, and harshness
• Mount bearings support smoother steering and help retain front-end alignment
• Matched-grade studs and nuts for application-specific serviceability
• Engineered to cushion road impacts and reduce jarring transfer into the vehicle

Product Details

The KYB Mount Components line is focused on restoring suspension performance with replacement parts designed for specific vehicle applications. The SM5823 is intended for front upper mounting locations and addresses common wear points in the strut mount area, where hardened insulators and worn bearings can create clunks, vibration, and steering looseness. This part cross-references Monroe Shocks & Struts (e.g., 906961) for the same application.

Compatible With 2006-2012 Ford Fusion, front upper; 2007-2012 Lincoln MKZ, front upper; 2006-2011 Mercury Milan, front upper; 2005-2008 Mazda 6, front upper; 2006 Lincoln Zephyr, front upper; and 2004 Mazda 6, front upper, from 2/3/04. Search terms such as KYB SM5823 front upper strut mount for Ford Fusion, Lincoln MKZ front upper mount component, and Mazda 6 suspension mount replacement match this application set.

What It Helps Address

• Noise from worn or hardened upper strut mount insulators
• Excess vibration transferred through the suspension
• Harsh ride feel over bumps and rough pavement
• Steering response affected by worn mount bearings
• Front-end alignment instability related to mount wear

Installation Notes

Install the KYB SM5823 at the front upper mount location only on the listed vehicles and model years. Inspect the strut assembly, bearing surfaces, and surrounding suspension hardware for wear before installation. Proper alignment checks after suspension service help confirm steering and ride quality are restored.

Quality Assurance

KYB designs Mount Components as OE-quality replacement parts for specific applications, with attention to rubber isolation, bearing function, and fitment accuracy. The SM5823 reflects KYB’s focus on restoring suspension performance in service applications where original mounts have deteriorated.