KYB 553178 Shock Absorber - Rear

Overview of KYB Gas-a-just Suspension Shock Absorber 553178

The KYB Gas-a-just shock absorber 553178 is engineered for precise suspension performance on select Mercedes-Benz models. Designed to restore original handling and ride quality, this shock absorber is compatible with various Mercedes-Benz vehicles including the 190E, 260E, 300CE, 300D, 300E, 300SD, 300SE, 300SEL, 400E, E300, E320, and E420.

• Compressed length: 14.76 inches
• Extended length: 20.39 inches
• Stroke length: 5.63 inches
• Lower mount type: E2 (10x40)
• Upper mount type: S1
• Includes dust cover for protection
• Equipped with B-stop and R-stop for controlled travel
• No internal rebound spring

Features and Specifications

This KYB Gas-a-just shock absorber features a compressed length of 14.76 inches and an extended length of 20.39 inches, providing a stroke length of 5.63 inches. The lower mount uses an E2 (10x40) configuration, while the upper mount is type S1, ensuring proper fitment and secure installation. The inclusion of a dust cover helps protect the shock from debris and extends its service life. Additionally, the shock absorber is designed with both B-stop and R-stop components to limit suspension travel and maintain vehicle stability. Notably, this model does not include an internal rebound spring.

About the KYB Gas-a-just Product Line

The Gas-a-just line from KYB is known for its gas-charged technology that provides consistent damping performance and improved ride control. This product line is designed to meet or exceed original equipment specifications, making it suitable for drivers seeking reliable suspension components for their Mercedes-Benz vehicles. The 553178 shock absorber is part of this line, offering a balance of durability and performance tailored to the specific suspension needs of the listed Mercedes-Benz models.

Applications and Problem Resolution

This shock absorber is compatible with a range of Mercedes-Benz models, including the 190E, 260E, 300CE, 300D, 300E, 300SD, 300SE, 300SEL, 400E, E300, E320, and E420. It is designed to address common suspension issues such as:

• Excessive bouncing or poor ride comfort
• Reduced vehicle stability during cornering
• Uneven tire wear caused by worn shocks
• Increased stopping distances due to suspension sag
• Noise or vibration from damaged shock absorbers

Installation Notes and Tips

When installing the KYB Gas-a-just shock absorber 553178, ensure the vehicle is securely lifted and supported. Verify the correct orientation of the upper mount type S1 and lower mount E2 (10x40) to match the vehicle’s suspension setup. The included dust cover should be properly positioned to protect the shock shaft from contaminants. It is recommended to replace shocks in pairs to maintain balanced handling and performance.

Quality Assurance and Warranty

KYB manufactures the Gas-a-just shock absorbers to meet strict quality standards, ensuring durability and consistent performance. The 553178 part number is backed by KYB’s quality assurance processes. Please refer to KYB’s official warranty policy for specific coverage details.