Keep heavy-duty suspensions damped and under control with the Monroe Magnum Shock Absorber 66605, a gas-charged front or rear unit built for class 3-6 commercial trucks and buses. It installs as a direct-fit replacement for listed applications including the 1987-1996 Chevrolet W6500 Tiltmaster, the 2003-2018 IC Corporation RE School Bus, the 1990-2004 International 3800, and the 1989-1996 Isuzu FSR — see the Buyer's Guide tab for the full list.
- Gas-charged design: Nitrogen gas-charge helps maintain tire-to-road contact by reducing aeration and shock fade for more consistent ride and handling.
- 10-Stage valving: Tuned to each vehicle, with a larger 1-3/8-in. bore for more efficient damping control on most applications.
- All-weather fluid: Contains special additives to assist with extreme temperatures and help reduce oil breakdown, while a 2-in. or 2-1/4-in. reserve tube holds more fluid.
- Durable build: Shouldered and bonded bushing with sleeve helps protect against bushing walkout, with arc welds up to 360°.
A PTFE-coated bearing reduces friction between the rod and rod guide, and a nitrocarburized piston rod is designed for longer service life on most applications. A robust hydraulic lock-out helps prevent over-extension of air bags, piston top-out, and damage to the seal assembly on most applications. Backed by Monroe's 90-day Risk Free Ride Offer and Limited Commercial Warranty.
Interchange: A83613 · HD12140526 · 540395C92 · 44183613 · 727761 · 83613 · SA66605 · 1516301670 · 345601 · 881646 · 600164 · 600164MT · M83613 · 660164 · 6605 · 2504419C1 · AMS600164 · 57306605 · 315540 · 61300112 · 3919567
This part cross-references / interchanges with the following part numbers:
A83613, HD12140526, 540395C92, 44183613, 727761, 83613, SA66605, 1516301670, 345601, 881646, 600164, 600164MT, M83613, 660164, 6605, 66605, 2504419C1, AMS600164, 57306605, 315540, 61300112, 3919567
