Keep your truck planted and in control with the Monroe Gas-Magnum Suspension Shock Absorber 34731, a rear shock that installs as a direct-fit replacement for the 1983-1997 Ford F-350. Engineered for hardworking full-size trucks and vans, the Gas-Magnum uses full-displaced valving on compression cycles to deliver firm control without a harsh ride.
- High-capacity design: a larger bore and bigger 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 controlled ride and longer service life.
- Nitrogen gas charge: helps maintain tire-to-road contact by reducing aeration and shock fade for improved ride and handling.
- Built to last: a sintered iron piston and self-lubricating fluid seal reduce friction against the piston rod to reduce wear; a heavy-duty nitrocarburized rod is used on non-dust-shield units.
- Consistent ride: OE all-weather fluid contains modifiers to handle extreme temperatures and help ensure smooth rod reaction.
Backed by Monroe's Limited Lifetime Warranty and Feel the Difference™ Guarantee. Sold individually; replace both rear shocks together as a matched pair for balanced control.
Interchange: D8TZ18125D · 344078 · 76731
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
Will this shock fit my vehicle?
The Monroe Gas-Magnum 34731 is a direct-fit rear shock absorber for the 1983-1997 Ford F-350. Check the Buyer's Guide tab to confirm the exact fit for your vehicle.
Is this a front or rear shock?
It is a rear suspension shock absorber cataloged for the rear position on the listed Ford F-350 applications.
How many do I need?
This listing is for one shock, sold individually. Replacing both rear shocks together as a matched pair is recommended for balanced ride and handling.
What are signs my shocks may need replacing?
Common signs include excessive bouncing, nose-diving under braking, uneven or cupped tire wear, and reduced ride control. Diagnose the cause before replacing.
What makes the Gas-Magnum different from a standard shock?
Its larger bore and 2-in. reserve tube hold up to twice the fluid of standard 1-in. bore shocks, and a nitrogen gas charge helps reduce aeration and shock fade.
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