Smooth out rough hauls and keep your truck's front tires planted with the Monroe Gas-Magnum Shock Absorber 34750, a front-position gas-charged shock engineered for hardworking full-size trucks and vans. It installs at the front suspension of the 1975-1980 and 1984-1989 Dodge D100, 1977-1993 Dodge D150, 1975-1980 Dodge D200, 1981-1993 Dodge D250, 1975-1980 Dodge D300, 1981-1993 Dodge D350, 1975-1993 Dodge Ramcharger, 1975-1981 Plymouth Trailduster and more — see the Buyer's Guide tab for the full application and engine list.
- Larger bore, bigger reserve: 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 with less effort 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: 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.
- Consistent ride: OE all-weather fluid contains special modifiers to handle extreme temperatures and help ensure smooth rod reaction.
Signs a front shock may need replacing include excessive bounce, nose-dive under braking, uneven ride, or fluid leakage. Backed by Monroe's Limited Lifetime Warranty.
Interchange: 4039723 · TS3432321B · 341645 · 58359 · 77359 · KG5403 · DG121 · 32127 · 37093 · SH81096 · 76750 · 12140587
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
Where does this shock absorber mount?
It's a front-position shock for the listed Dodge and Plymouth trucks and vans. Shocks work in pairs, so replacing both front units together is recommended for balanced ride control.
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 on hardworking trucks and vans.
How is the Gas-Magnum different from a standard shock?
It uses a larger bore and a 2-in. reserve tube to hold more oil — up to twice the fluid capacity of standard 1-in. bore shocks — for efficient operation and longer service life.
What are signs my front shocks need replacing?
Common signs include excessive bouncing, nose-dive under braking, an uneven or harsh ride, and visible fluid leakage. Diagnose the cause before replacing.
Does it fit my vehicle?
It fits front applications on trucks like the 1977-1993 Dodge D150, 1975-1993 Ramcharger and 1975-1981 Plymouth Trailduster. Check the Buyer's Guide tab for the full list.
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