Smooth out heavy-duty ride quality and keep the front tires planted with the Monroe Magnum Front Suspension Shock Absorber 66422, a gas-charged front shock built for class 3-6 commercial trucks and buses. Designed to handle the demands of high-mileage, severe-use vehicles, it drops in as a direct-fit replacement across the listed applications — including the IC Corporation CE School Bus, International 3000/3000FE/3000IC/3000RE, 3200, 3400, 4200/4200LP, 4300/4300LP, 4400/4400LP, 8500, DuraStar and MV607, plus the Nexus Ghost and Wraith. See the Buyer's Guide tab for the full year-by-year list.
A robust hydraulic lock-out on most applications helps prevent over-extension of air bags, piston top-out and seal damage. Backed by Monroe's 90-day Risk Free Ride Offer and Limited Commercial Warranty.
Interchange: HD12140572 · HD12150084 · 441831636422 · F343382 · F347304 · 4C4O18045AA · AA616 · 83163 · 9180184 · 10702 · ASH241 · AT810 · 3533356C1 · 3578105C1 · 3578105C2 · 3606770C1 · 6127088C1 · OE13402S · 316302
This part cross-references / interchanges with the following part numbers:
What does this shock absorber do?
It dampens suspension movement to control ride motion and help keep the front tires in contact with the road. Signs it may need replacing include excessive vibration, bouncing, or a rougher-than-normal ride.
Is this a front or rear shock?
The catalog lists the Monroe Magnum 66422 as a front suspension shock absorber.
Which vehicles does the 66422 fit?
It's a front shock for class 3-6 trucks and buses, including the IC CE School Bus, International 3000-8500 series, DuraStar and MV607, and the Nexus Ghost and Wraith. See the Buyer's Guide tab for exact years.
What makes the Magnum suited to commercial use?
It's gas-charged and designed for high-mileage, severe-use class 3-6 trucks and buses, with 10-stage valving tuned to each vehicle and all-weather fluid to help handle extreme temperatures.
Should I replace shocks in pairs?
Replacing the shocks on the same axle as a matched pair is a good practice for balanced ride control. This listing is for one shock; order the quantity your vehicle requires.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
