International Lt, model year 2021. Filed by Navistar, Inc. and reported to NHTSA on 24 February 2021. 7 vehicles potentially affected.
What the notice says Navistar, Inc. (Navistar) is recalling certain 2021 International LT vehicles equipped with a Cummins X15 engine. The capscrews that attach the flywheel to the crankshaft may have been improperly torqued, allowing the flywheel to detach.
Is your vehicle included? Check with your VIN at NHTSA, or ask a dealer. This page is an independent copy of the notice, kept so you can see what changed after it was published. It is not the authority, and the authority’s own text is the one to act on.
What owners ask about this recall
- Which vehicles does recall 21V112 cover?
- International LT, model year 2021.
- What is wrong with them?
- Navistar, Inc. (Navistar) is recalling certain 2021 International LT vehicles equipped with a Cummins X15 engine. The capscrews that attach the flywheel to the crankshaft may have been improperly torqued, allowing the flywheel to detach.
- What can happen if it is not put right?
- A detached flywheel can cause loss of drive power, increasing the risk of a crash. Additionally, driveline pieces may be ejected from the engine compartment, increasing the risk of injury.
- Is there a fix yet?
- Yes, and it is free. Navistar will work with the engine manufacturer Cummins Inc. to notify owners, and Cummins dealers will properly tighten the capscrews and inspect for possible damage, repairing any damage found, free of charge. The recall began on March 29, 2021.
- What should I do now?
- Check your own vehicle by its VIN with NHTSA, which is the record to act on.
Answered from the register this site holds. NHTSA is the record to act on.
What the authority says can happen if this is not fixed: “A detached flywheel can cause loss of drive power, increasing the risk of a crash. Additionally, driveline pieces may be ejected from the engine compartment, increasing the risk of injury.”
affected
in the notice
caught
| Campaign | 21V112 |
|---|---|
| Filed by | Navistar, Inc. |
| System at fault | Engine |
| Reported to NHTSA | 24 February 2021 |
| Model years | 2021-2021 |
| Vehicles named | INTERNATIONAL LT |
What the notice says today
The consequence
A detached flywheel can cause loss of drive power, increasing the risk of a crash. Additionally, driveline pieces may be ejected from the engine compartment, increasing the risk of injury.
The remedy
Navistar will work with the engine manufacturer Cummins Inc. to notify owners, and Cummins dealers will properly tighten the capscrews and inspect for possible damage, repairing any damage found, free of charge. The recall began on March 29, 2021. Owners may contact Navistar customer service at 1-800-448-7825.
What it said before
This campaign is in the register but not yet in the dated wording archive, so we cannot yet say whether its text has moved. It enters the archive on the next pass.
This is one of 116 notices in the record whose component field names engine. Across that group the median wait before owners were written to was 50 days.
The models named here, across their whole recall history
The recall record and its wording are published by the US National Highway Traffic Safety Administration and are US Government public domain. The dated archive, the comparison and any before-and-after above are CarsMultiverse. How fresh every engine behind this page is, is public on the status page. To check a specific vehicle, use NHTSA’s own VIN lookup.
Other Navistar notices we hold
- 24V750: 2024-2025 IC Bus EVSB and 2024-2025 CESB school buses
- 24V735: 2025 International CV
- 24V734: 2025 International HX and International LT
- 24V556: 2025 International HV, HX, LT, MV, and RH
- 24V463: 2025 IC Bus CE school buses
- 24V462: 2025 International HV, LT, MV, and RH trucks
- 24V375: 2024-2025 IC Bus CE school buses
- 24V341: 2024-2025 IC Bus CE SBUS school buses equipped with Intellipark Park Valve Modules (PVM)
All 179 Navistar campaigns we hold · Every manufacturer in the record
The fingerprint of this notice
We take a SHA-256 of each of the three blocks of text the authority publishes and keep the first eight characters. As we last read campaign 21V112 on 23 August 2026, they were:
- Defect summary
d0b96241 - Consequence
12ec4ba1 - Remedy
168c39ea
We first read this notice on 21 August 2026. It has not moved since. If it ever does, these characters will not match, and the change will be dated here.
The wording we hold for 21V112 · how the whole register is watched
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