KYB SR4148 Suspension Strut and Coil Spring Assembly - Front

KYB Strut-Plus SR4148 for Ford Expedition

The KYB Strut-Plus SR4148 is a complete front suspension strut and coil spring assembly for select 2003-2006 Ford Expedition models. Built to restore OE ride height and handling, it combines KYB damping technology with a vehicle-specific coil spring for a direct-fit replacement.

Key Features

• Complete front strut and coil spring assembly for a professional OE-style repair
• Includes a KYB Excel-G strut with application-specific damping valves
• High-carbon steel coil spring is matched to vehicle corner weights to restore ride height within OE specifications
• Stronger steel outer shell for added structural support
• Engineered to help vehicles equipped with electronic safety systems such as ESC and ABS
• Pre-assembled for exact fitment and consistent installation results
• Assembled in the USA

Product Details

KYB Strut-Plus SR4148 is part of the KYB Strut-Plus line, a complete suspension solution designed around original equipment requirements. As an OE supplier, KYB builds this assembly to help restore the handling, steering response, and stability expected from the factory setup. For 2003-2006 Ford Expedition front suspension service, SR4148 provides a direct replacement approach that addresses both damping and ride height in one assembly. This part cross-references Monroe Shocks & Struts 171369 for the same application.

What It Helps Fix

• Front-end sag or uneven ride height
• Excessive bounce, nose dive, or poor damping control
• Loose or unstable steering feel
• Reduced suspension stability during braking and cornering
• Wear-related ride quality loss on a 2003-2006 Ford Expedition front suspension

Installation Notes

Fits 2003-2006 Ford Expedition, front, excluding air suspension. Verify vehicle trim and suspension configuration before installation. Because this is a pre-assembled strut and coil spring assembly, it is suited for direct replacement of the front suspension unit on compatible Ford Expedition applications. SR4148 should be installed following factory service procedures and alignment should be checked after suspension work.

Quality Assurance

KYB manufactures this Strut-Plus assembly using OE-focused engineering, including a KYB Excel-G strut and vehicle-specific spring design. SR4148 is assembled in the USA and built to restore factory ride height and control characteristics for the listed Ford Expedition fitment.