KYB 551123 Suspension Strut - Rear Right

KYB Gas-a-Just Rear Right Strut for Lexus LS460

The KYB Gas-a-just 551123 is a monotube suspension strut built as an OE-style replacement for the rear right position on select Lexus LS460 models. It is engineered to restore original ride control, steering response, and suspension stability for daily driving and heavier-duty use.

Key Features

• Monotube OEM replacement for the correct rear right application
• Fits 2007-2017 Lexus LS460, rear right, w/o air suspension
• High-pressure gas and oil chambers are separated for consistent damping and quick response
• Triple chrome plated piston rod helps reduce seal wear and fluid leakage
• Built for vehicles that tow, carry load, or use larger wheels and tires
• Supports proper operation of electronic safety systems by maintaining suspension control
• Part number 551123 is a direct KYB Gas-a-just replacement for this application

Product Details

KYB Gas-a-just struts use a monotube design with an air-free hydraulic working area and a separate high-pressure nitrogen gas chamber. That layout helps deliver firm, responsive damping during normal driving while adding immediate control when road conditions or vehicle load demand it. For Lexus LS460 owners seeking a rear right suspension strut replacement, KYB 551123 is built to restore the vehicle’s intended handling balance and ride behavior.

The Gas-a-just line is aimed at vehicles that work harder than average, including those used for towing or fitted with heavier wheels and tires. This rear right strut for the Lexus LS460 also helps maintain the suspension performance that brake and stability systems rely on. If you are replacing a worn rear shock/strut on a 2007-2017 Lexus LS460 without air suspension, KYB 551123 is a direct-fit option to consider.

This part cross-references Lexus 4853080386 for the same application.

Common Problems This Strut Can Address

• Excessive rear-end bounce or oscillation
• Loose or delayed steering response from worn suspension damping
• Uneven ride control after shock or strut wear
• Fluid leakage from a failing strut assembly
• Reduced stability when carrying load or using larger tires and wheels

Installation Notes

Compatible With 2007-2017 Lexus LS460, rear right, w/o air suspension. Verify mount style, compressed length, extended length, and stroke length before installation to confirm proper suspension travel and fitment. Replace worn suspension components in pairs when appropriate for balanced handling, and inspect related mounts and bushings during service.

Quality Assurance

KYB designs the Gas-a-just line as an OE monotube replacement, using a high-pressure monotube construction and a chrome piston rod to support long-term seal durability and consistent damping performance. Part number 551123 is engineered to meet the fitment and control requirements of the listed Lexus LS460 application.