KYB 5540014 Shock Absorber - Rear

Overview of KYB Gas-a-just Suspension Shock Absorber

The KYB Gas-a-just 5540014 suspension shock absorber is engineered for the Lexus GS350, providing reliable damping performance tailored to this vehicle. Designed to restore original handling and ride comfort, this shock absorber meets precise fitment specifications for optimal suspension function.

• Compatible with Lexus GS350 models
• Part number 5540014 for exact replacement
• Compressed length: 18.69 inches
• Extended length: 24.47 inches
• Stroke length: 5.78 inches
• Lower mount type: E2 (14.2x70)
• Upper mount type: S1 (12mm)
• Includes internal rebound spring for consistent damping
• R-stop included, B-stop not included
• No dust cover included

Details on the Gas-a-just Product Line

The KYB Gas-a-just line features gas-charged shock absorbers designed to improve vehicle stability and control. This product line uses internal gas pressure to reduce foaming and maintain consistent damping performance under various driving conditions. The 5540014 shock absorber for the Lexus GS350 benefits from this technology, offering a balance of comfort and handling precision.

Technical Specifications and Features

This suspension shock absorber has a compressed length of 18.69 inches and an extended length of 24.47 inches, providing a stroke length of 5.78 inches. The lower mount uses an E2 type fitting measuring 14.2 by 70 mm, while the upper mount is an S1 type with a 12 mm diameter. The internal rebound spring enhances the shock's ability to return to its original position smoothly, and the inclusion of an R-stop helps prevent overextension. Note that this unit does not include a dust cover or B-stop.

Common Applications and Problem Solving

• Restores proper suspension damping on Lexus GS350 vehicles
• Reduces excessive bouncing and improves ride stability
• Addresses uneven tire wear caused by worn shocks
• Improves vehicle handling during cornering and braking
• Eliminates noise and vibration from faulty shock absorbers

Installation Notes and Tips

When installing the KYB Gas-a-just 5540014 shock absorber on a Lexus GS350, ensure the correct orientation of the upper and lower mounts according to the specified types (S1 upper, E2 lower). Verify the stroke length clearance to avoid binding during suspension travel. Since this shock does not include a dust cover, inspect the mounting area for debris and clean as necessary before installation. Professional installation is recommended to maintain suspension integrity and safety.

Quality Assurance and Warranty

KYB manufactures the Gas-a-just 5540014 shock absorber to meet OEM standards for fit and function on the Lexus GS350. The internal gas charge and rebound spring design contribute to consistent performance over time. While specific warranty details are not provided here, KYB products typically come with a limited warranty covering defects in materials and workmanship. Consult KYB or authorized distributors for exact warranty terms.