Settle the ride and keep the rear of your Super Duty planted with the KYB Excel-G Suspension Shock Absorber 344419, a direct-fit rear replacement for the 1999-2004 Ford F-250 Super Duty and 1999-2016 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 the vehicle's original designed performance rather than change it, which earns it the OEA (Original Equipment for the Aftermarket) classification.
- Nitrogen gas-charged twin-tube design: includes the same quality components found in KYB's global OEM products, and is a preferred choice of professional technicians.
- Triple-lip fluid seal: helps reduce the chance of oil and gas leaking out.
- Strong, thick bodies and brackets: minimize flex to help maintain correct alignment in all conditions.
- Vehicle-specific, hand-assembled damping valves: manage tire contact, steering response and body movement, helping restore designed control and handling and keep electronic safety systems performing as intended.
This is a rear-position shock. Replacing shocks in matched pairs across the axle is recommended for balanced ride control; sold individually — this listing is for one.
Interchange: 3C3Z18125LA · 3C3Z18125LD · 3C3Z18125MB · 3C3Z18125MC · 5C3A18125E · 5C3Z18125LB · 7C3Z18125M · 7C3Z18125MCA · BC3Z18125AA · BC3Z18125AB · BC3Z18125AE · BC3Z18125AF · F81Z18125CN · G63810 · 34687
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What vehicles does the KYB 344419 shock fit?
It's a direct-fit rear replacement for the 1999-2004 Ford F-250 Super Duty and 1999-2016 Ford F-350 Super Duty. See the Buyer's Guide tab to confirm your exact configuration.
Is this a front or rear shock?
This is a rear-position shock absorber for the listed Super Duty applications.
What type of shock is the Excel-G?
It's a nitrogen gas-charged, twin-tube design built on KYB's OE assembly lines with OE-quality components, classified as OEA (Original Equipment for the Aftermarket).
Do I need to replace both shocks?
They're sold individually and this listing is for one. Replacing shocks as a matched pair across the axle is recommended for balanced ride control.
What does the triple-lip fluid seal do?
The triple-lip fluid seal helps reduce the chance of oil and gas leaking out of the shock during service.
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