KYB Gas-a-Just Front Left Monotube Strut for Lexus IS250 and IS350 2006-2012, Part 551131

The Gas-a-just monotube strut is available as an OE monotube replacement to restore your vehicle's original capabilities. The KYB Gas-a-just has two separate working chambers: An air-free hydraulic piston and valve area for responsiveness and control, and a second high-pressure nitrogen gas area with a floating piston that provides a comfortable ride during normal driving and adds instant performance on demand.

• To reduce the chance of noise and vibration KYB recommends installing new strut mounts, part number: SM5642

The KYB Gas-a-Just front left monotube strut is an OE-style replacement designed to help restore the original handling, ride control, and responsiveness of your Lexus. Built for drivers who want dependable suspension performance, this KYB strut uses a monotube design with separate hydraulic and high-pressure nitrogen chambers for consistent operation under changing road conditions.

The air-free hydraulic piston and valve area supports precise control and responsive damping, while the high-pressure nitrogen chamber uses a floating piston to help prevent aeration and maintain performance. This design provides a comfortable ride during normal driving while delivering additional control when cornering, braking, or encountering uneven pavement. As a direct-fit replacement, the KYB Gas-a-Just helps simplify installation and supports reliable suspension service.

• Fitment: Fits the front left position on select 2006-2012 Lexus IS250 and IS350 applications.
• Installation recommendation: KYB recommends installing a new strut mount, part number SM5642, to help reduce the chance of noise and vibration.
• Service benefit: Replacing worn struts can help improve ride control, handling stability, and tire contact with the road.

Compatible applications include the 2006-2012 Lexus IS250 and 2006-2012 Lexus IS350, subject to vehicle configuration and suspension position. Verify the vehicle application and front left location before ordering. The package includes one KYB Gas-a-Just front left monotube strut. Mounting hardware and a strut mount are not included unless separately specified.

Features:

• Monotube gas-charged design: Uses separate hydraulic and high-pressure nitrogen chambers for responsive damping and consistent suspension control.
• OE replacement performance: Helps restore the vehicle's original ride quality, handling, and stability.
• Floating piston technology: Separates the nitrogen gas from the hydraulic fluid to help reduce aeration and maintain dependable performance.
• Front left vehicle fitment: Designed for select 2006-2012 Lexus IS250 and IS350 applications.

Fitments:
2006 Lexus IS250 Base
2006 Lexus IS350 Base
2007 Lexus IS250 Base
2007 Lexus IS350 Base
2008 Lexus IS250 Base
2008 Lexus IS350 Base
2009 Lexus IS250 Base
2009 Lexus IS350 Base
2010 Lexus IS250 Base
2010 Lexus IS250 C
2010 Lexus IS350 Base
2010 Lexus IS350 C
2011 Lexus IS250 Base
2011 Lexus IS250 C
2011 Lexus IS350 Base
2011 Lexus IS350 C
2012 Lexus IS250 Base
2012 Lexus IS250 C
2012 Lexus IS350 Base
2012 Lexus IS350 C
2013 Lexus IS250 Base
2013 Lexus IS250 C
2013 Lexus IS350 Base
2013 Lexus IS350 C
2014 Lexus IS250 C
2014 Lexus IS250 C F Sport
2014 Lexus IS250 F Sport
2014 Lexus IS350 Base
2014 Lexus IS350 C
2014 Lexus IS350 C F Sport
2014 Lexus IS350 F Sport
2015 Lexus IS250 C
2015 Lexus IS250 C F Sport
2015 Lexus IS250 F Sport
2015 Lexus IS350 Base
2015 Lexus IS350 C
2015 Lexus IS350 C F Sport
2015 Lexus IS350 F Sport
2016 Lexus IS200t Base
2016 Lexus IS200t F Sport
2016 Lexus IS350 Base
2016 Lexus IS350 F Sport

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Unknown
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1