KYB SR4227 Suspension Strut and Coil Spring Assembly - Front

KYB Strut-Plus SR4227 for Nissan and Infiniti Front Suspension

The KYB Strut-Plus SR4227 is a front suspension strut and coil spring assembly built to restore ride height, steering response, and vehicle control. It is engineered for select Nissan Armada, Nissan Titan, Infiniti QX56, and Pathfinder Armada applications with OE-style fitment and pre-assembled convenience.

Key Features

• OE-style replacement choice for Asian vehicles
• Includes a KYB Excel-G strut, a stronger steel outer shell, and application-specific damping valves
• High-carbon steel coil spring is matched to vehicle attributes and corner weights to help restore OE ride height
• Pre-assembled for exact fitment and professional results
• Engineered to help vehicles with electronic safety systems such as ESC and ABS
• Assembled in the USA
• Recipient of a 2018 industry award in the import aftermarket category

Product Details

KYB Strut-Plus is part of KYB’s Strut-Plus line, which combines a restoring strut with a precision-matched coil spring for front suspension service. As an OE supplier, KYB designs this assembly to return handling balance, steering pivot function, and ride height control to factory-style operation. The SR4227 is a strong match for drivers searching for a front strut and coil spring assembly for 2004-2015 Nissan Titan, 2005-2015 Nissan Armada, 2004-2010 Infiniti QX56, and 2004 Nissan Pathfinder Armada front suspension service.

This part cross-references Monroe Shocks & Struts (e.g., 181358, 271377R) for the same application.

What It Helps Address

• Front-end sag or reduced ride height
• Loose, unstable, or inconsistent steering feel
• Excessive bounce or poor damping control
• Suspension wear that affects braking and stability
• Front suspension service on vehicles with ESC, ABS, or related electronic safety systems

Installation Notes and Tips

Install the SR4227 on the front suspension only and follow the manufacturer’s instructions for replacement of the strut and coil spring assembly. Verify application details carefully, including model year and package exclusions such as off-road package notes on select vehicles. Because this is a pre-assembled suspension strut and coil spring assembly, it is intended to streamline professional installation and reduce the need to transfer spring components.

Quality Assurance

KYB manufactures OE-focused suspension components and builds the Strut-Plus line to restore factory-style ride, handling, and control characteristics. The SR4227 is assembled in the USA and engineered around application-specific damping and spring specifications for the listed Nissan and Infiniti front suspension applications.