KYB SM5176 Suspension Strut Mount - Front

Overview

KYB SM5176 is a suspension strut mount for select Lexus LS400 applications. It is built as an OE-quality replacement mount that helps restore suspension isolation, steering support, and alignment stability where worn mounts have hardened or deteriorated.

Fits 1990-1994 Lexus LS400, front, w/o air suspension.

Key Features

• OE-quality replacement strut mount for application-specific fitment
• Superior rubber helps reduce noise, vibration, and harshness
• Mount bearing supports smoother steering response and alignment retention
• Matched-grade studs and nuts support a proper service replacement
• Designed to cushion road impacts and reduce jarring transfer into the cabin

Detailed Description

The KYB Mount Components line focuses on replacement suspension parts engineered for the demands of each application. The SM5176 strut mount is made to replace worn vibration insulators that can transmit road noise and harshness into the vehicle. On Lexus LS400 models, the mount bearing also serves as a steering pivot and supports vehicle weight, making it an important part of steering feel and front-end alignment.

This part cross-references Gabriel 143199 and Monroe Shocks & Struts 903998 for the same application. The KYB SM5176 is a practical choice when the original mount has become noisy, stiff, or less effective at isolating suspension movement.

What It Helps Address

• Clunking or noise from a worn strut mount
• Excess vibration transferred through the suspension
• Harsh ride feel caused by hardened mount rubber
• Reduced steering smoothness from a worn bearing plate
• Front-end alignment concerns related to mount wear

Installation Notes

Compatible with 1990-1994 Lexus LS400 front applications without air suspension. Verify the vehicle’s suspension configuration before ordering, and compare the existing mount to the replacement part number SM5176. Professional installation is recommended because the strut assembly must be serviced correctly for proper steering and suspension performance.

Quality Assurance

KYB positions its Mount Components line as OE-quality replacement hardware for application-specific service. The SM5176 reflects that approach with a design focused on restoring suspension isolation, steering support, and alignment control.