KYB SR4633 Suspension Strut and Coil Spring Assembly - Front Right

KYB Strut-Plus Front Right Assembly

The KYB Strut-Plus SR4633 is a front right suspension strut and coil spring assembly for select INFINITI applications. It combines an OE-restoring KYB strut with a high carbon steel coil spring to help return ride height, handling response, and steering control to factory specifications.

Compatible with 2015 INFINITI Q40, front right; 2009-2013 INFINITI G37, front right; 2011-2012 INFINITI G25, front right; and 2007-2008 INFINITI G35, front right. This KYB Strut-Plus SR4633 is built for direct replacement service on vehicles with the listed configurations.

Key Features

• Part number SR4633
• Brand line: KYB Strut-Plus
• Suspension strut and coil spring assembly for the front right position
• OE-restoring KYB strut construction
• High carbon steel coil spring matched to vehicle attributes and corner weights
• Boot included
• Internal rebound spring included
• Compressed length: 11.41 in.
• Extended length: 13.24 in.
• Stroke length: 1.83 in.

Product Details

KYB Strut-Plus is a complete strut assembly line focused on restoring original ride height and suspension behavior. For this application, the assembly pairs a KYB strut with a coil spring selected to match the vehicle’s weight distribution, helping maintain OE specifications where the suspension geometry and steering pivot are critical. On INFINITI G37, G25, G35, and Q40 models, the front right strut plays a direct role in ride control, stability, and steering feel.

This part number, SR4633, is a practical OE-style replacement for drivers servicing the front suspension on a 2015 INFINITI Q40 or select 2007-2013 INFINITI G-series models. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Issues It Can Address

• Front-end sag or uneven ride height
• Excessive bounce or reduced damping control
• Loose or imprecise steering response
• Noise from a worn front right strut assembly
• Suspension wear that affects stability and crash-avoidance system behavior

Installation Notes

Install on the front right corner only for the listed applications. Verify year, model, and configuration before ordering, including the note for G37 and G35 applications without 4-wheel steering. Because this is a complete strut and spring assembly, it is suited to replacement service where a full front right unit is being changed rather than rebuilding individual components.

After installation, confirm ride height, steering wheel center, and suspension alignment. A professional alignment is recommended whenever a front strut assembly is replaced.

Quality Assurance

KYB is an original equipment supplier, and the Strut-Plus line is engineered to restore handling and control characteristics using OE-focused components and spring rates. The assembly is built to support factory ride height targets and consistent suspension performance on the specified INFINITI applications.