Keep every hardworking mile under control with the Monroe Gas-Magnum Front Suspension Shock Absorber 34839. It installs as a direct-fit replacement for full-size Chevrolet and GMC G-series vans, including the 1975-1995 Chevrolet G20 and G10, the 1975-1996 Chevrolet G30, and the 1979-1996 GMC G3500 — see the Buyer's Guide tab for the full list of applications.
- Gas-Magnum design: engineered for full-size trucks and vans to deliver firm control without a harsh ride, with up to twice the fluid capacity of standard 1-in. bore shocks.
- Built to last: a heavy-duty nitrocarburized rod (non-dust-shield units only) and sintered iron piston aid durability, while a self-lubricating fluid seal reduces friction against the piston rod to reduce wear.
- Nitrogen gas-charge: helps maintain tire-to-road contact by reducing aeration and shock fade for improved ride and handling.
- Larger bore and 2-in. reserve tube: hold more oil for greater capacity, letting the shock work efficiently for controlled ride.
OE all-weather fluid contains modifiers to handle extreme temperatures, and full-displaced valving on compression cycles helps deliver controlled ride and handling. Backed by Monroe's Limited Lifetime Warranty and Feel the Difference Guarantee. Sold individually — replace both front shocks together for balanced ride control.
Interchange: 52017 · 530134 · AT10 · AT11 · TS3432241B · E70041 · 10634 · 58357 · 344068 · GM125 · 210200 · 33076 · 37090 · SH82006 · 76839 · 66839 · 12140395
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What vehicles does the Monroe 34839 shock fit?
It's a front shock absorber for full-size Chevrolet and GMC G-series vans, including the 1975-1995 Chevrolet G10 and G20, the 1975-1996 Chevrolet G30, and the 1979-1996 GMC G3500. Check the Buyer's Guide tab for the complete list.
Is this a front or rear shock?
It is cataloged as a front suspension shock absorber for the listed applications.
How many should I buy?
It's sold individually as one shock. Replacing both front shocks together as a matched pair is recommended for balanced ride control.
What are signs my shock absorbers may need replacing?
Common signs include excessive bounce over bumps, nose-diving under braking, uneven tire wear, or fluid leaking from the shock body. Diagnose the cause before replacing.
What makes the Gas-Magnum different from a standard shock?
It uses a larger bore and 2-in. reserve tube with up to twice the fluid capacity of standard 1-in. bore shocks, plus a nitrogen gas-charge to reduce aeration and shock fade.
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