KYB 553603 Shock Absorber - Rear

Overview of KYB Gas-a-just Suspension Shock Absorber 553603

The KYB Gas-a-just 553603 suspension shock absorber is engineered for Cadillac CTS models, providing reliable damping performance. Designed to restore original handling and ride quality, this shock absorber features precise dimensions and mounting types tailored for a direct fit.

• Compressed length: 18.54 inches
• Extended length: 22.54 inches
• Stroke length: 4.00 inches
• Lower mount type: Special
• Upper mount type: S1
• Includes dust cover for protection
• Equipped with B-stop and R-stop bumpers
• No internal rebound spring

Details on KYB Gas-a-just Product Line

The Gas-a-just line by KYB is designed to provide consistent gas-charged shock absorbers that maintain vehicle stability and control. This product line focuses on delivering a balance between comfort and performance, making it suitable for Cadillac CTS owners seeking to replace worn shocks with a reliable, OEM-style component. The 553603 part number represents a specific fitment within this line, ensuring compatibility and proper function.

Technical Description and Features

The KYB Gas-a-just 553603 shock absorber features a compressed length of 18.54 inches and an extended length of 22.54 inches, with a stroke length of 4.00 inches. Its special lower mount and S1 upper mount types are designed to match the mounting points on Cadillac CTS vehicles precisely. The inclusion of a dust cover helps protect the shock shaft from debris and extends service life. Additionally, the shock absorber includes both B-stop and R-stop bumpers to limit suspension travel and prevent damage. This model does not include an internal rebound spring, which is typical for this product line.

Common Applications and Problem Solving

• Restores proper damping and ride control on Cadillac CTS models
• Replaces worn or leaking shock absorbers causing poor handling
• Eliminates excessive bouncing or bottoming out during driving
• Improves vehicle stability and braking response
• Prevents premature tire wear due to suspension issues

Installation Notes and Tips

When installing the KYB Gas-a-just 553603 shock absorber on a Cadillac CTS, ensure the vehicle is securely lifted and supported. Verify the special lower mount and S1 upper mount types align correctly with the vehicle’s suspension points. It is recommended to replace shocks in pairs to maintain balanced handling. Inspect related suspension components for wear during installation and replace as necessary. The included dust cover should be positioned properly to protect the shock shaft from contaminants.

Quality Assurance and Warranty

KYB manufactures the Gas-a-just 553603 shock absorber to meet or exceed OEM specifications for Cadillac CTS vehicles. The product undergoes rigorous quality control to ensure durability and consistent performance. KYB typically offers a limited warranty on their shock absorbers; please refer to KYB’s official documentation for specific warranty terms related to part number 553603.