Restore the designed ride control, stability, and handling of your full-size GM truck with the KYB Excel-G Front Suspension Shock Absorber 344380. This nitrogen gas-charged, twin-tube shock is a direct-fit front replacement for the 1999-2006 Chevrolet Silverado 1500, 2007 Chevrolet Silverado 1500 Classic, 1999-2006 GMC Sierra 1500, and 2007 GMC Sierra 1500 Classic. KYB builds the Excel-G on the same OE assembly lines it supplies to new-vehicle manufacturers, using OE-quality components calibrated to restore original, designed performance rather than change it — the classification KYB calls OEA (Original Equipment for the Aftermarket).
- Nitrogen gas-charged twin-tube design: KYB's recommended OEM-replacement shock, built to help restore the vehicle's original control and handling.
- Triple-lip fluid seal: reduces 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 the suspension performing as the vehicle manufacturer intended so electronic safety systems work as designed.
Shocks wear as a set — replacing both fronts together supports even, balanced ride control.
Interchange: G63783 · 37149
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What vehicles does the KYB 344380 fit?
It is a front shock absorber for the 1999-2006 Chevrolet Silverado 1500, 2007 Silverado 1500 Classic, 1999-2006 GMC Sierra 1500, and 2007 GMC Sierra 1500 Classic. See the Buyer's Guide tab to confirm your vehicle.
Is this a front or rear shock?
This KYB Excel-G 344380 is cataloged as a front suspension shock absorber for the listed applications.
What type of shock is the Excel-G?
It is a nitrogen gas-charged, twin-tube shock built on KYB's OE assembly lines with OE-quality components, calibrated to restore the vehicle's original designed performance.
Should I replace shocks in pairs?
Shocks wear over time, so replacing both fronts together is recommended for even, balanced ride control. This listing is for one shock.
What does the triple-lip fluid seal do?
The triple-lip fluid seal is designed to reduce the chance of oil and gas leaking out of the shock, helping maintain consistent damping performance.
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