Smooth out a bouncy, worn-out ride with the KYB shock absorber 3440098, a nitrogen gas-charged, twin-tube Excel-G rear damper. This KYB gas shock absorber is a direct-fit rear replacement for the 2017-2024 Ford F-250 Super Duty and 2017-2022 Ford F-350 Super Duty — see the "Vehicles it fits" section for engine-level fitment.
Part of KYB's Excel-G line (classified OEA, Original Equipment for the Aftermarket), it is built on the same KYB OE assembly lines with the same OE-quality components and calibrated to restore the vehicle's original designed performance rather than change it.
- Twin-tube, nitrogen gas-charged design: the KYB gas shock absorber Excel-G includes the same quality components found in KYB's global OEM products.
- Triple-lip fluid seal: reduces the chance of oil and gas leaking out.
- Vehicle-specific damping valves: hand assembled in-house to help manage tire contact, steering response, and body movement.
- Ride control focus: helps restore the designed control and handling, supporting stability, stopping, and lane-change response.
KYB recommends replacing shocks as a matched set for even, balanced ride control; this listing is for one rear shock. When comparing KYB shock absorber price, this is the professional technician's preferred OE-replacement choice.
Interchange: HC3Z18125B · HC3Z18125C
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
What vehicles does the KYB 3440098 shock fit?
It's a direct-fit rear shock for the 2017-2024 Ford F-250 Super Duty and 2017-2022 Ford F-350 Super Duty. Check the "Vehicles it fits" section to confirm your exact configuration.
Is this a gas shock absorber?
Yes. The KYB Excel-G 3440098 is a nitrogen gas-charged, twin-tube design that uses the same OE-quality components found in KYB's global OEM products.
What position does this shock install in?
This is a rear shock absorber for the listed Ford Super Duty applications.
Do I need to replace both rear shocks?
KYB recommends replacing shocks as a matched set for even, balanced ride control. This listing is for one shock, so order two to do the rear axle together.
What are signs my shock may need replacing?
Excessive bouncing, a floaty or unstable ride, nose dive when braking, or fluid leaking from the shock body are common signs. Have the suspension inspected to confirm the cause before replacing.
