KYB 5550014 Suspension Shock Absorber - Rear

KYB Gas-a-just Rear Shock Absorber

The KYB Gas-a-just shock absorber, part number 5550014, is a rear suspension shock for select Dodge Durango and Jeep Grand Cherokee applications. It uses a monotube design with separate hydraulic and high-pressure gas chambers to deliver responsive damping and consistent ride control during everyday driving and harder suspension demands.

Key Features

• Monotube construction for direct response and stable damping
• Air-free hydraulic piston and valve area for control and responsiveness
• High-pressure nitrogen gas chamber with floating piston for ride comfort and instant performance on demand
• Rear shock absorber for select Dodge Durango and Jeep Grand Cherokee models
• Compressed length: 16.53 in; extended length: 22.52 in; stroke length: 5.99 in
• Upper mount type: S1 (12 mm); lower mount type: Special

Product Details

KYB Gas-a-just shocks are built around a monotube layout that separates the working chambers, helping the shock react quickly while maintaining consistent damping. For rear suspension service on the Dodge Durango and Jeep Grand Cherokee, this design supports controlled body motion and steady ride quality without the fade associated with aeration in conventional twin-tube designs. Part number 5550014 is also referenced for OE-style replacement applications, including Mopar cross references 68069846AH and 68299126AA.

Compatible With 2020-2025 Dodge Durango, rear, w/ Normal Suspension (Except Load Leveling Suspension); Gas-a-just. Compatible With 2016-2021 Jeep Grand Cherokee, rear, Eco Suspension w/o Air Suspension, w/o Electronic Suspension, w/o Load Leveling Suspension; Gas-a-just. Compatible With 2011-2019 Dodge Durango, rear, Except Load Leveling and w/o Sport Suspension; Gas-a-just. Compatible With 2011-2015 Jeep Grand Cherokee, rear, Sport Suspension w/o Air Suspension, w/o Electronic Suspension, w/o Load Leveling Suspension; Gas-a-just.

What It Helps Address

• Rear suspension bounce or excessive oscillation
• Reduced damping control from worn shock absorbers
• Ride inconsistency during normal driving and load changes
• Body motion over bumps, dips, and uneven pavement
• Loss of suspension response from aging OE shocks

Installation Notes and Tips

Verify rear fitment by model year, suspension package, and notes before installation. This shock is specific to applications with normal, eco, or sport suspension configurations listed above and excludes load leveling, air suspension, and electronic suspension where noted. Confirm the upper mount type S1 (12 mm) and special lower mount style match the vehicle before removal of the original part. Professional installation and a post-installation road test are recommended to confirm proper ride height and damping behavior.

Quality Assurance

KYB is a long-established suspension manufacturer known for OE-level shock absorber engineering. The Gas-a-just line uses a monotube design to maintain consistent damping performance under changing road conditions, and part number 5550014 is built to match the listed rear applications for Dodge Durango and Jeep Grand Cherokee service.