KYB 554386 Shock Absorber - Rear

Rear Shock Absorber for Ford Escape, Mazda Tribute, Mercury Mariner

KYB Gas-a-just 554386 is a rear monotube shock absorber built for drivers who want firmer control, quicker response, and consistent damping. It is an OE-style replacement for select Ford Escape, Mazda Tribute, and Mercury Mariner applications from 2008-2012.

Key Features

• Monotube design with separate gas and oil chambers for responsive damping and fade-resistant operation
• High-pressure nitrogen gas helps maintain control during normal driving and adds immediate performance when load or road conditions change
• Triple chrome plated piston rod helps reduce seal wear and fluid leakage concerns
• Designed for vehicles that tow, work, or use larger and heavier tires and wheels
• Restores designed handling and steering response for the Ford Edge platform family noted by KYB
• Dust cover included
• Lower mount type: E2(16X40); upper mount type: S1
• Compressed length: 14.8 in; extended length: 23.54 in; stroke length: 8.74 in

Product Details

The KYB Gas-a-just line focuses on monotube shock absorber construction, which uses an air-free hydraulic working area for control and a separate high-pressure gas chamber for fast response. That layout helps the shock react quickly to suspension movement while maintaining consistent performance under demanding conditions. Part number 554386 is a rear suspension shock absorber for 2008-2012 Ford Escape, 2008-2011 Mazda Tribute, and 2008-2011 Mercury Mariner applications.

This part cross-references Ford OE numbers 9L8Z18125A and CL8Z18125A for the same application.

What It Helps Address

• Excessive rear bounce or oscillation
• Reduced steering response from worn rear damping
• Shock fade during repeated suspension movement
• Fluid leakage related to seal wear
• Loss of control when carrying loads or using heavier wheels and tires

Installation Notes and Tips

Fits 2008-2012 Ford Escape, rear. Fits 2008-2011 Mazda Tribute, rear. Fits 2008-2011 Mercury Mariner, rear. Verify mount style, compressed length, extended length, and stroke length before installation. Replace shocks in matched axle pairs when the opposite side shows wear, and inspect rear mounts, bushings, and hardware condition during service.

Quality Assurance

KYB is a major OE suspension supplier, and the Gas-a-just design is engineered to deliver OE-style fitment with monotube performance characteristics for consistent rear suspension control.