Rear Shock Absorber for 2021-2025 Ford F-150 - KYB 5550021

$111.99

KYB Suspension Shock Absorber 5550021 - view 2

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Part number: 5550021

UPC: 197244053616

Condition: New

Weight: 6.50 LBS

Item Package Quantity: 1

$111.99

Current Stock: 53

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KYB Suspension Shock Absorber P/N:5550021

$111.99

Description

Help restore rear-axle control on a bouncy, fading ride with the KYB Gas-a-just Shock Absorber (MPN 5550021), a high-pressure monotube gas unit that installs as a direct-fit rear replacement for the 2021-2025 Ford F-150. KYB offers it as an OE monotube replacement to help restore your truck's original capabilities.

Two working chambers: an air-free hydraulic piston and valve area for responsiveness and control, plus a high-pressure nitrogen gas area with a floating piston for a comfortable ride during normal driving and added performance on demand.
High-pressure monotube design: separates the gas and oil for fade-free operation and instant response.
Triple chrome plated piston rod: an ultra-smooth rod helps reduce seal wear, since fluid leaking can be a cause of shock failure.
Higher gas pressure: responds quickly to help improve steering response, and helps keep electronic safety systems performing as the manufacturer intended.

This suspension shock absorber mounts at the rear position; it is sold individually, and replacing both rear shocks together is recommended for even ride control.

Interchange: ML3Z18125AQ

Installation instructions1

Manufacturer's description

Product specs

Vehicles it fits

Interchange numbers

This part cross-references / interchanges with the following part numbers:

ML3Z18125AQ

Buyer's Q&A

Frequently Asked Questions

What vehicle does this KYB shock fit?

It is a direct-fit rear replacement for the 2021-2025 Ford F-150. See the "Vehicles it fits" section to confirm your exact configuration.

What is a monotube gas shock?

It uses a high-pressure design that separates the gas and oil for fade-free operation and instant response, with an air-free hydraulic chamber and a nitrogen gas chamber.

Is this a front or rear shock?

It is cataloged for the rear position. It is sold individually, and replacing both rear units together is recommended.

What are signs this shock may need replacing?

Excessive bounce, a harsh or unsettled ride, reduced control, or fluid leaking from the shock body can indicate wear. Diagnose the cause before replacing.

Does this shock help with steering response?

Its higher gas pressure responds quickly to help improve steering response and helps keep electronic safety systems performing as the vehicle manufacturer intended.