Keep your hardworking Ford van or truck planted with the Monroe Gas-Magnum Rear Suspension Shock Absorber 34761, a nitrogen gas-charged shock engineered for midsize and full-size trucks and vans. It installs in the rear position as a direct-fit replacement for many vehicles, among them the 1999-2019 Ford E-350 Super Duty, 2003-2019 Ford E-450 Super Duty and 2026 Ford F-450 Super Duty — see the "Vehicles it fits" section for the full list.
- Designed for trucks and vans: full-displaced valving on compression cycles delivers controlled ride and handling in hardworking full-size trucks and vans.
- Built to last: a heavy-duty nitrocarburized rod (on non-dust-shield units) and sintered iron piston enhance durability, while a self-lubricating fluid seal reduces friction against the piston rod to cut wear.
- Consistent ride: OE all-weather fluid uses special modifiers to handle extreme temperatures and help reduce friction for smooth rod reaction.
- Larger capacity: a larger bore and bigger 2-in. reserve tube hold more oil — up to twice the fluid capacity of standard 1-in. bore shocks — and a nitrogen gas charge helps maintain tire-to-road contact by reducing aeration and shock fade.
Backed by Monroe's Limited Lifetime Warranty and Feel the Difference Guarantee. Worn shocks can show up as excessive bouncing, body roll, nose dive under braking, or uneven tire wear; if a failed rear shock is the cause, this replaces it. Sold individually — replacing both rear shocks together as a matched pair is recommended for balanced, even control.
Interchange: 813097 · 33176857 · HD12140601 · TS3331402B · 341582 · 8C2Z18125A · 8C2Z18125B · 8C2Z18125C · 8C2Z18125D · 58623 · 83178 · 91773 · G63623 · 344371 · 88051043 · FD125 · ASH1136 · SH81828 · 76761 · 173582 · 925067 · 30777 · 12140178 · JGT4168S
This part cross-references / interchanges with the following part numbers:
813097, 33176857, HD12140601, TS3331402B, 341582, 8C2Z18125A, 8C2Z18125B, 8C2Z18125C, 8C2Z18125D, 58623, 83178, 91773, G63623, 344371, 88051043, FD125, ASH1136, SH81828, 76761, 173582, 925067, 30777, 12140178, JGT4168S
Frequently Asked Questions
Is the Monroe 34761 a front or rear shock?
It is a rear suspension shock absorber for the listed applications.
What makes the Gas-Magnum design different?
It is a nitrogen gas-charged shock with a larger bore and 2-in. reserve tube — up to twice the fluid capacity of standard 1-in. bore shocks — for firm control without a harsh ride.
How many do I need to order?
This listing is for one shock. Replacing both rear shocks together as a matched pair is recommended for balanced, even control.
What are signs my shocks may need replacing?
Excessive bouncing, body roll, nose dive under braking, or uneven tire wear. Diagnose the cause first, since these symptoms can have other sources.
Will it fit my Ford?
It is a direct-fit replacement for applications such as the 1999-2019 Ford E-350 Super Duty, 2003-2019 Ford E-450 Super Duty and 2026 Ford F-450 Super Duty. Check the "Vehicles it fits" section for the full list.
