Keep body movement in check and help restore the factory ride control of your truck with the KYB Excel-G Rear Shock Absorber (MPN 3440098). This nitrogen gas-charged, twin-tube gas shock is a direct-fit replacement for the rear position on the 2017-2024 Ford F-250 Super Duty and 2017-2022 Ford F-350 Super Duty. KYB is a world-leading supplier of shocks and struts to new-vehicle manufacturers, and the Excel-G is built on the same OE assembly lines using the same OE-quality components — calibrated to restore original designed performance, not change it, earning it the OEA (Original Equipment for the Aftermarket) classification.
- Nitrogen gas-charged twin-tube design: the KYB Excel-G includes every quality component found in KYB's global OEM products and is a KYB-recommended OEM-replacement shock.
- Triple lip fluid seal: helps reduce the chance of oil and gas leaking out.
- Vehicle-specific damping valves: hand-assembled in-house to manage tire contact, steering response and body movement.
- Supports electronic safety systems: helps keep them performing as designed by maintaining suspension operation the vehicle manufacturer intended.
Excel-G is designed to help restore the designed control and handling of your truck and is a preferred choice of professional technicians.
Interchange: HC3Z18125B · HC3Z18125C
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What vehicles does this KYB shock fit?
It is a direct-fit rear replacement for the 2017-2024 Ford F-250 Super Duty and 2017-2022 Ford F-350 Super Duty. Check the Buyer's Guide tab to confirm your exact application.
What type of shock is the KYB Excel-G 3440098?
It is a nitrogen gas-charged, twin-tube gas shock built on KYB's OE assembly lines with OE-quality components, earning the OEA (Original Equipment for the Aftermarket) classification.
Is this a front or rear shock?
This is a rear-position shock absorber for the listed Ford Super Duty applications.
What interchange numbers does this shock replace?
It cross-references HC3Z18125B and HC3Z18125C. Matching any of these to your original part helps confirm the correct replacement.
Should I replace shocks in pairs?
Replacing both shocks on the same axle together is a good practice for balanced, even ride control. This listing is for a single shock, so order two if you are servicing both sides.
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