Keep hardworking trucks and vans planted with the Monroe Gas-Magnum Front Suspension Shock Absorber 34909, a front-position damper engineered for midsize and full-size trucks and vans. It's a direct-fit replacement for the 1961-1965 Ford F-100, 1978-1979 Ford F-150, 1961-1979 Ford F-250, 1979 Ford F-350, and 1988-1989 Mitsubishi Fuso FK — see the Buyer's Guide tab for engine-level details.
- Designed for trucks and vans: full-displaced valving on the compression cycle helps deliver firm control without a harsh ride.
- Built to last: a sintered iron piston and self-lubricating fluid seal reduce friction against the piston rod to limit wear (heavy-duty nitrocarburized rod on non-dust-shield units).
- Consistent ride: OE all-weather fluid uses special modifiers to handle extreme temperatures and help smooth rod reaction.
- Nitrogen gas-charge: helps maintain tire-to-road contact by reducing aeration and shock fade for improved ride and handling.
- Greater capacity: a larger bore and 2-in. reserve tube hold more oil — up to twice the fluid capacity of standard 1-in. bore shocks — so the shock works efficiently for a controlled ride and longer service life.
Backed by Monroe's Limited Lifetime Warranty and the Feel the Difference Guarantee. Sold individually; replacing both front shocks as a matched pair is recommended for balanced ride control.
Interchange: KG5429 · 32286 · 4094 · 76909 · 12140416
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What position does this shock mount in?
The Monroe Gas-Magnum 34909 is a front suspension shock absorber for the listed trucks and vans.
Which vehicles does the 34909 fit?
It fits the 1961-1965 Ford F-100, 1978-1979 Ford F-150, 1961-1979 Ford F-250, 1979 Ford F-350, and 1988-1989 Mitsubishi Fuso FK. Check the Buyer's Guide tab to confirm your vehicle.
How is the Gas-Magnum different from a standard shock?
It uses a larger bore and 2-in. reserve tube that hold more oil — up to twice the fluid capacity of standard 1-in. bore shocks — for controlled ride and longer service life.
What does the nitrogen gas-charge do?
The nitrogen gas-charge helps maintain tire-to-road contact by reducing aeration and shock fade, which supports improved ride and handling.
Do I need to replace both front shocks?
This listing is for one shock, sold individually. Replacing both front shocks together as a matched pair is recommended for even, balanced ride control.
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