Firm up your truck's front end and tame body motion with the Monroe Gas-Magnum Front Suspension Shock Absorber 34686. Engineered for hardworking full-size trucks and vans, it's a direct-fit front replacement for the 2002 Ford E-550 Econoline Super Duty, 2003 Ford E-550 Super Duty, and 1999-2004 Ford F-250, F-350, F-450 and F-550 Super Duty.
Firm control without a harsh ride: Full-displaced valving on compression cycles delivers controlled ride and handling, with up to twice the fluid capacity of standard 1-in. bore shocks so it works efficiently with less effort.
- 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.
- Consistent ride: OE all-weather fluid contains 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.
- Larger reserve: A bigger 2-in. reserve tube holds more oil for greater capacity and longer service life.
Backed by Monroe's Limited Lifetime Warranty and Feel the Difference Guarantee. Sold individually; replacing both front shocks together as a matched pair is recommended for balanced handling. See the Buyer's Guide tab for engine-level fitment.
Interchange: 813051 · HD12140650 · TS3431441B · 342501 · 342502 · 2C2Z18124CA · 3U2Z18124BAA · 58455 · 58809 · 77809 · G63809 · 9150701 · 344077 · KG5441 · FD109 · ASH387 · ASH408 · ASHV871 · SH61655 · 76686 · S5441 · RS5267 · RS55267 · 310237 · 12140126
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
Will this shock fit my truck?
It's a front direct-fit for the 2002 Ford E-550 Econoline Super Duty, 2003 E-550 Super Duty, and 1999-2004 Ford F-250, F-350, F-450 and F-550 Super Duty. Check the Buyer's Guide tab to confirm.
Is this a front or rear shock absorber?
Front. It's cataloged as a front suspension shock absorber for the listed applications.
How many do I need?
Each is sold individually. Replacing both front shocks together as a matched pair is recommended for even, balanced handling.
What makes the Gas-Magnum different?
It uses a nitrogen gas-charge plus a larger bore and 2-in. reserve tube for up to twice the fluid capacity of standard 1-in. bore shocks, giving firm control without a harsh ride.
What are signs my shocks may need replacing?
Excessive bouncing, nose dive when braking, poor handling, uneven tire wear, or fluid leaking from the shock body can be signs it may be time to replace them.
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