Smooth out the ride and isolate the cab from the frame with the Monroe Magnum Cab Suspension Shock Absorber 66126, a gas-charged cab shock built for hardworking commercial trucks. It installs as a direct-fit replacement for the 2000-2018 International 9900I and 2000-2009 International 9900IX (see the Buyer's Guide tab for engine-level details). This is a CAB-position shock — it mounts in the cab suspension, not the chassis suspension.
- Cab isolation: Gas-charged design with velocity-sensitive valving helps isolate the cab from the frame for a smoother, more comfortable ride (most applications).
- Built for severe use: Designed to handle the demands of high-mileage, severe-use vehicles with cab suspensions.
- Consistent control: All-weather fluid with additives helps resist extreme temperatures and reduce oil breakdown, while a larger 2-in. reserve tube holds more fluid (when required).
- Durable build: Shouldered and bonded bushing with sleeve helps protect against bushing walkout, with arc welds up to 360° for durability.
A nitrogen gas-charge helps maintain tire-to-road contact by reducing aeration and shock fade for improved ride and handling. Backed by Monroe's 90-day Risk Free Ride Offer and Limited Commercial Warranty.
Interchange: A83051 · HD12140537 · 44183051 · AMS66126 · 83051 · 8160849 · SA66126 · 12010154 · 12010254 · M83051 · 2585145C1 · 2589922C1 · 317532
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What vehicles does the Monroe 66126 fit?
It's a direct-fit replacement for the 2000-2018 International 9900I and the 2000-2009 International 9900IX. Check the Buyer's Guide tab to confirm fitment for your truck.
Is this a chassis shock or a cab shock?
It's a CAB-position suspension shock absorber. It mounts in the cab suspension to isolate the cab from the frame, not in the chassis/axle suspension.
Is the 66126 gas-charged?
Yes. It uses a nitrogen gas-charge that helps maintain tire-to-road contact by reducing aeration and shock fade for improved ride and handling.
What are signs this cab shock may need replacing?
Common signs include a rougher or bouncier cab ride, excessive cab movement over bumps, or a leaking shock body. Diagnose the cause before replacing.
What warranty comes with this shock?
It comes with Monroe's 90-day Risk Free Ride Offer and a Limited Commercial Warranty.
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