Firm up your Super Duty's rear ride with the KYB Excel-G rear shock absorber (P/N 344413), a gas shock designed to restore your truck's original ride control and handling. This KYB shock absorber drops in as a direct-fit rear replacement for the 2003-2004 Ford F-250 Super Duty, 2003-2004 Ford F-350 Super Duty, and the 2008-2010 and 2015-2016 Ford F-450 Super Duty — see the Buyer's Guide tab for engine-level details.
The Excel-G is KYB's OEA (Original Equipment for the Aftermarket) line, made on the same KYB OE assembly lines with the same OE-quality components and calibrated to restore original designed performance, not change it.
- Nitrogen gas-charged twin-tube design: a KYB gas shock absorber Excel-G built with the quality components KYB's global OEM products include.
- 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 the vehicle manufacturer intended.
- Triple-lip fluid seal: reduces the chance of oil and gas leaking out.
KYB builds strong, thick strut bodies and brackets to minimize flex and help maintain correct alignment. Sold individually; replacing both rear shocks together is recommended for balanced ride control.
Interchange: 9C3Z18125C · G63810 · 34687
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
Will this KYB gas shock absorber fit my Ford Super Duty?
It's a direct-fit rear shock for the 2003-2004 Ford F-250 and F-350 Super Duty, and the 2008-2010 and 2015-2016 Ford F-450 Super Duty. Check the Buyer's Guide tab to confirm your exact vehicle.
Is this a front or rear shock absorber?
This KYB Excel-G 344413 is cataloged as a rear shock absorber for the listed Ford Super Duty applications.
What is the KYB Excel-G design?
It's a nitrogen gas-charged, twin-tube design built on KYB's OE assembly lines with OE-quality components, calibrated to restore the vehicle's original designed performance.
Do I need to replace both rear shocks?
This listing is for one shock, sold individually. Replacing both rear shocks together is recommended for balanced, even ride control.
What numbers does this KYB shock absorber replace?
It cross-references interchange numbers 9C3Z18125C, G63810 and 34687. Match your original part number to confirm compatibility.
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