KYB 553333 Shock Absorber - Rear

KYB Gas-a-just Rear Shock for PT Cruiser

The KYB Gas-a-just 553333 is a rear suspension shock absorber for 2001-2010 Chrysler PT Cruiser models. Built as a monotube design, it delivers quick response, consistent damping, and improved control for vehicles that see daily driving, towing, or heavier wheel and tire setups.

Gas-a-just Product Line

KYB Gas-a-just shocks use separate gas and oil chambers to reduce fade and maintain stable damping performance. The design is tuned for responsive handling while still delivering a controlled ride during normal driving, making it a practical upgrade for a Chrysler PT Cruiser rear suspension service.

Key Features

• Up to 25% more damping performance than original equipment shocks
• Monotube construction separates gas and oil for fade-resistant operation
• High-pressure nitrogen chamber provides instant response when road conditions change
• Triple chrome plated piston rod helps reduce seal wear and fluid leakage
• Valving and components are designed specifically for the PT Cruiser
• Supports steering response and suspension control on vehicles with added load demands
• Includes dust cover

Detailed Description

KYB 553333 is engineered for the rear of the Chrysler PT Cruiser from 2001 through 2010. Its monotube layout uses an air-free hydraulic working chamber for control and a separate high-pressure gas chamber for consistent performance, helping the shock react quickly without the fade associated with aeration. This makes it a strong choice for PT Cruiser owners looking to restore rear suspension control or replace worn OE shocks with a more responsive design.

This part cross-references Monroe Shocks & Struts (e.g., 5989) for the same application.

What It Helps Address

• Excessive rear bounce after bumps
• Reduced damping control from worn shock absorbers
• Unstable ride quality with heavier tires and wheels
• Delayed steering response caused by weak suspension control
• Fluid leakage related to seal wear

Installation Notes and Tips

Fits 2001-2010 Chrysler PT Cruiser, rear. Verify compressed length, extended length, and mount style before installation: compressed length 11.81 in., extended length 17.71 in., stroke length 5.9 in. Lower mount type is E2(12X40) and upper mount type is E2(12X60). Confirm the vehicle is equipped for rear shock replacement and inspect related suspension components during service.

Quality Assurance

KYB is known for OE-focused suspension engineering, and the Gas-a-just line is built with high-pressure monotube construction for consistent damping and response. Part number 553333 is a direct-fit rear shock absorber for the listed Chrysler PT Cruiser applications.