KYB 553356 Shock Absorber - Rear

KYB Gas-a-Just Rear Shock for Mercedes-Benz E-Class

The KYB Gas-a-Just 553356 is a monotube rear shock absorber built as an OE-style replacement for select Mercedes-Benz E320 and E350 models. It is designed to restore original handling response, steering control, and ride consistency on vehicles that work harder, tow, or run larger wheels and tires.

Key Features

• Monotube OE replacement shock absorber for rear suspension service
• Air-free hydraulic working chamber for responsive damping control
• High-pressure nitrogen gas chamber for fade-resistant operation and quick response
• Triple chrome plated piston rod helps reduce seal wear and fluid leakage
• Designed to restore the intended control and handling of Mercedes-Benz E-Class applications
• Supports vehicles with heavier tires and wheels, as well as demanding driving conditions
• Dust cover included

Product Details

KYB Gas-a-Just shocks use a monotube design with separate gas and oil chambers, allowing the shock to react quickly while maintaining consistent damping performance. On the Mercedes-Benz E320 and Mercedes-Benz E350 rear suspension, part number 553356 is a direct-fit replacement for vehicles without Sport Suspension and Air Suspension. The design helps maintain the suspension behavior that electronic safety systems expect from the chassis, brakes, and tires.

This part cross-references Monroe Shocks & Struts 39108 for the same application.

Common Problems This Shock Can Address

• Excessive rear bounce or oscillation after bumps
• Reduced steering response and loose-feeling handling
• Shock fade during repeated suspension movement
• Fluid leakage from worn shock seals
• Loss of ride control on heavier-duty or modified wheel and tire setups

Installation Notes and Fitment

Compatible With 2003-2009 Mercedes-Benz E320, rear, recommended OEM replacement; w/o Sport Suspension and Air Suspension; Gas-a-just. Compatible With 2006-2009 Mercedes-Benz E350, rear, recommended OEM replacement; w/o Sport Suspension and Air Suspension; Gas-a-just.

Verify the rear suspension configuration before ordering. This shock has a compressed length of 17.93 in., an extended length of 22.87 in., and a stroke length of 4.94 in. Upper mount type is S1 and lower mount type is E2 (10.2 x 48). Dust cover and bump stop provisions are listed in the product specifications.

Quality Assurance

KYB designs the Gas-a-Just line as an OE monotube replacement to help restore factory-style suspension response on Mercedes-Benz E-Class applications. Part number 553356 is engineered for consistent damping, reduced seal wear, and dependable rear suspension control.