Keep your hardworking truck under control with the Monroe Gas-Magnum Front Suspension Shock Absorber 34755, a gas-charged shock engineered for midsize and full-size trucks and vans. It installs as a direct-fit front replacement for the 1991-2002 Chevrolet C3500HD and 1991-2002 GMC C3500HD — see the Buyer's Guide tab for engine-level details. Designed to deliver firm control without a harsh ride, the Gas-Magnum dampens suspension movement so the tire stays in contact with the road.
- Designed for trucks and vans: features full-displaced valving on compression cycles to help deliver controlled ride and handling for full-size trucks and vans.
- Built to last: heavy-duty nitrocarburized rod (non-dust-shield units only) and a sintered iron piston enhance durability, while a self-lubricating fluid seal reduces friction against the piston rod to reduce wear.
- Larger bore: with up to twice the fluid capacity of standard 1-in. bore shocks and a bigger 2-in. reserve tube, it holds more oil to work efficiently for controlled ride and longer service life.
- Nitrogen gas-charge: helps maintain tire-to-road contact by reducing aeration and shock fade, and OE all-weather fluid handles extreme temperatures for smooth rod reaction.
Backed by Monroe's Limited Lifetime Warranty and Feel the Difference Guarantee.
Interchange: 58812 · G63812 · KG54307 · 32363 · 76755
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
Does this shock fit my vehicle?
It's a direct-fit front replacement for the 1991-2002 Chevrolet C3500HD and 1991-2002 GMC C3500HD. Check the Buyer's Guide tab to confirm the fit for your exact vehicle.
Is the Monroe 34755 a front or rear shock?
The 34755 is a front suspension shock absorber for the listed applications.
What makes the Gas-Magnum different from a standard shock?
It uses a larger bore and a bigger 2-in. reserve tube for up to twice the fluid capacity of standard 1-in. bore shocks, plus a nitrogen gas-charge to reduce aeration and shock fade.
What are signs my shock may need replacing?
Excessive bouncing, reduced ride control, uneven tire wear, or fluid leaking from the shock body are common signs. Diagnose the cause before replacing, as symptoms can have other sources.
Should I replace shocks in pairs?
Replacing both shocks on the same axle together is recommended for balanced, even ride control. This listing is for one shock absorber.
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