KYB SR4597 Suspension Strut and Coil Spring Assembly - Front Left

KYB Strut-Plus SR4597 for Kia Optima

The KYB Strut-Plus SR4597 is a front left suspension strut and coil spring assembly for select Kia Optima models. It combines an OE-restoring KYB strut with a high carbon steel coil spring to help return ride height, handling balance, and steering response to factory specifications.

Key Features

• Front left suspension strut and coil spring assembly for 2012-2015 Kia Optima
• OE-restoring KYB strut built for original ride and control characteristics
• High carbon steel coil spring matched to vehicle attributes and corner weights
• Helps restore ride height within OE specifications
• Boot included
• Compressed length: 13.66 in; extended length: 20.62 in; stroke length: 6.96 in

Product Details

KYB Strut-Plus SR4597 is engineered for the front left corner of the Kia Optima, including 2013-2015 Kia Optima front left and 2012 Kia Optima front left with USA-built, from 11/30/2011 applications. As an original equipment supplier, KYB builds this assembly around the suspension geometry and load requirements that affect vehicle height, stability, and steering pivot function. The spring and strut are paired to support consistent ride quality and proper suspension positioning. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Issues This Part Addresses

• Sagging front ride height on a Kia Optima
• Worn strut performance that affects steering feel and stability
• Uneven front suspension response on the driver side
• Noisy or harsh ride from a fatigued strut and spring assembly
• Loss of OE ride control after suspension wear

Installation Notes and Tips

Fits 2013-2015 Kia Optima, front left. Fits 2012 Kia Optima, front left, USA built, from 11/30/2011. Confirm vehicle build date and front left application before ordering. Because this is a complete strut and spring assembly, it is installed as a suspension unit rather than as a bare strut. After installation, a professional wheel alignment is recommended to verify steering wheel position and suspension geometry.

Quality Assurance

KYB is an original equipment supplier, and the Strut-Plus line is built to restore factory ride height, handling, and control characteristics for the specified Kia Optima applications.