KYB 5530005 Suspension Shock Absorber - Rear

KYB Gas-a-Just Rear Shock Absorber

The KYB Gas-a-just 5530005 is a monotube rear shock absorber built as an OE-style replacement for select Mercedes-Benz applications. It uses separate hydraulic and high-pressure nitrogen gas chambers to deliver responsive damping in normal driving and firmer control when road conditions demand it.

Compatible with Mercedes-Benz C300, E300, E350, E450, E400, C400, and CLS450 rear suspension applications listed below, this KYB shock absorber is focused on restoring original ride control and handling balance. The 5530005 part number is a direct reference for shoppers searching for a rear shock replacement for standard or comfort suspension setups without air suspension.

Gas-a-Just Product Line Details

KYB Gas-a-just shocks are monotube units that separate the working hydraulic area from the gas charge. That layout supports consistent response, improved control, and a ride feel that stays composed during everyday driving while still reacting quickly when suspension demand increases.

Key Features

• Monotube rear shock absorber for OE-style replacement
• Air-free hydraulic piston and valve area for responsive damping
• High-pressure nitrogen gas chamber with floating piston
• Compressed length: 16.54 in.
• Extended length: 23.03 in.
• Stroke length: 6.49 in.
• Lower mount type: E2(10.2x48)
• Upper mount type: S1(10MM)

Detailed Description

KYB 5530005 is engineered for rear suspension service on select Mercedes-Benz models where standard or comfort suspension is specified and air suspension is not present. The monotube design helps maintain damping consistency, while the gas-charged chamber supports immediate response under load changes. This makes it a practical choice for drivers replacing a worn rear shock on a Mercedes-Benz C300, E300, E350, E450, or CLS450 with the listed suspension configurations.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Excessive rear bounce after bumps
• Reduced body control in cornering and lane changes
• Uneven or unstable ride feel from worn shock absorbers
• Rear-end harshness caused by degraded damping performance
• Loss of original suspension response on standard or comfort suspension setups

Installation Notes and Tips

• Fits rear position only for the applications listed.
• Verify suspension type before ordering: standard suspension, comfort suspension, and no air suspension are required for the listed vehicles.
• Confirm mount style and dimensions against the original shock before installation.
• Dust cover is not included.
• Professional installation and a post-repair inspection of related suspension components are recommended.

Quality Assurance

KYB is a recognized OE supplier, and the Gas-a-just line is built to serve as an OE monotube replacement for factory-style ride control. Part number 5530005 is specified for the rear suspension applications shown below.

• Fits 2023 Mercedes-Benz CLS450, Rear, w/o Air Suspension, w/o Adaptive Control Damping; Gas-a-just
• Fits 2020-2023 Mercedes-Benz E350, Rear, w/ Standard Suspension and w/o Air Suspension; Gas-a-just
• Fits 2019-2023 Mercedes-Benz E450, Rear, w/ Standard Suspension, w/o Air Suspension, w/o Adaptive Suspension; Gas-a-just
• Fits 2017-2022 Mercedes-Benz C300, Rear, w/ Comfort Suspension, w/o Air Suspension; Gas-a-just
• Fits 2017-2019 Mercedes-Benz E300, Rear, w/ Standard Suspension and w/o Air Suspension; Gas-a-just
• Fits 2018 Mercedes-Benz E400, Rear, w/ Standard Suspension, w/o Air Suspension, w/o Adaptive Suspension; Gas-a-just
• Fits 2016 Mercedes-Benz C300, Rear, with Comfort Suspension, without Air Suspension; Gas-a-just
• Fits 2015 Mercedes-Benz C300, Rear, w/o Sport Suspension and Except Air Suspension; Gas-a-just
• Fits 2015 Mercedes-Benz C400, Rear, w/o Sport Suspension and Except Air Suspension; Gas-a-just