KYB 553386 Suspension Shock Absorber - Rear

KYB Gas-a-just Rear Shock Absorber

The KYB Gas-a-just 553386 is a monotube rear shock absorber built as an OE-style replacement for the Mercedes-Benz GLK platform. It is engineered to restore original control and handling while delivering quick response under load, making it a practical choice for daily driving, towing, and vehicles with larger wheels and tires.

Key Features

• Monotube OE replacement design for direct suspension service
• Separate hydraulic and high-pressure nitrogen chambers for consistent damping response
• High-pressure monotube construction helps reduce fade during repeated suspension movement
• Triple chrome plated piston rod helps reduce seal wear and fluid leakage
• Faster steering response from higher gas pressure
• Supports electronic safety systems by helping the suspension operate as designed
• Rear application for Mercedes-Benz GLK250 and GLK350

Product Details

Gas-a-just is KYB’s monotube shock line for drivers who want OE-style replacement performance with firmer response when the vehicle is working harder. The design uses an air-free hydraulic working area for control and a separate nitrogen gas chamber with a floating piston for immediate damping action. For Mercedes-Benz GLK applications, KYB 553386 helps restore the rear suspension behavior expected from the factory, especially on vehicles that tow, carry extra load, or run heavier tire and wheel packages. This part cross-references Monroe Shocks & Struts 172286 for the same application.

What It Helps Address

• Excessive rear-end bounce over bumps
• Reduced steering response from worn rear damping
• Fluid leakage caused by worn shock seals
• Fade during repeated suspension compression and rebound
• Loss of factory ride control on Mercedes-Benz GLK250 and GLK350 models

Installation Notes

Fits 2013-2015 Mercedes-Benz GLK250, rear. Fits 2010-2015 Mercedes-Benz GLK350, rear. Replace the suspension strut and coil spring assembly according to the manufacturer’s instructions. Verify rear suspension condition, mounting points, and related wear items before installation. Confirm the part number 553386 against the vehicle’s original equipment specification before service.

Quality Assurance

KYB manufactures the Gas-a-just line as an OE monotube replacement designed to match the original suspension architecture used on the vehicle. Part number 553386 is built to support consistent damping response and long-term seal durability in rear suspension service.