Recall 21V112 affects 7 2021 International Lt vehicles for improperly torqued flywheel capscrews that can detach the flywheel. Repair is free.
International is recalling 7 2021 Lt vehicles because improperly torqued capscrews can let the flywheel detach from the crankshaft. A detached flywheel can cause loss of drive power, and driveline pieces can be ejected from the engine compartment, which increases the risk of a crash or injury; International dealers will complete the repair free of charge.
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What's wrong?
The flywheel on the 2021 International Lt with a Cummins X15 engine is a heavy rotating disc bolted to the crankshaft. The crankshaft turns with the engine, and the flywheel helps transfer that rotation into the driveline through the clutch or automated transmission. The capscrews are the bolts that hold that flywheel joint together.
On affected trucks, those capscrews were not tightened to the required force during engine assembly. The assembly torque gun did not enforce a minimum torque setting, so a loose flywheel-to-crankshaft joint left the factory. As the engine runs, that loose joint lets the flywheel move until it detaches from the crankshaft.
Before failure, drivers with manual transmissions can notice noise, vibration, or difficult clutch operation. Drivers with automated transmissions can see a clutch fault lamp illuminate.
Who's affected?
| 2021 International Lt | Engine |
|---|---|
| Units affected | 7 |
| Field incidents | NHTSA has logged no field incidents to date. |
A matching year and model does not guarantee inclusion. Check your VIN to confirm whether your specific truck is included.
What's the safety risk?
A detached flywheel can cut drive power and increase crash risk. Driveline pieces can also be thrown from the engine compartment, creating an injury risk near the vehicle. Watch for noise, vibration, difficult clutch operation on manual transmissions, or a clutch fault lamp on automated transmissions. Schedule the repair soon. Repair is free at any franchised International dealer.
What should I do?
- Check your VIN to confirm your 2021 International Lt is included in this recall.
- Contact a franchised International dealer to arrange the free Cummins dealer flywheel capscrew inspection and tightening that keeps the flywheel attached to the crankshaft.
- Bring the recall notice if International mailed one. If not, reference recall number 21V112 when you call.
- Drive cautiously until the repair is complete, and pull over safely if the truck loses drive power or develops driveline noise.
What happens at the repair
At the dealer, an International technician properly tightens the capscrews that attach the flywheel to the crankshaft, then inspects for damage and repairs any damage found. The recall repair is free, including parts and labor. Out-of-pocket repairs already paid are handled through the manufacturer's limited engine warranty, not through a separate reimbursement program. Ask the service desk how warranty coverage applies if you have prior repair paperwork for this flywheel or engine issue.
| Reimbursement | Warranty coverage applies |
|---|
Timeline
| February 24, 2021 | NHTSA published the recall |
|---|---|
| February 26, 2021 | Dealer notification began |
| February 26, 2021 | Dealer notification ended |
| March 29, 2021 | Owner notification mailed |
| March 29, 2021 | Interim owner notification (was planned for this date) |
Frequently asked questions
What is recall 21V112?
Recall 21V112 covers 7 2021 International Lt vehicles with Cummins X15 engines. The flywheel capscrews were not torqued correctly, which can let the flywheel detach from the crankshaft. Cummins dealers will tighten the capscrews, inspect for damage, and complete needed repairs for free.
What should I do if my 2021 International Lt is on this recall?
Check your VIN to confirm your specific vehicle is included in recall 21V112. If it is, contact an International dealer, Cummins dealer, or Navistar customer service at 1-800-448-7825 to arrange the capscrew tightening and inspection. Reference recall 21V112 when you call.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to repair the defect at no cost. For recall 21V112, Cummins dealers will properly tighten the flywheel capscrews, inspect for possible damage, and repair any related damage found free of charge.
What is the safety risk?
A detached flywheel can cause loss of drive power, which raises crash risk. Driveline pieces can also be ejected from the engine compartment, which raises injury risk. If your VIN is included, arrange the free dealer repair before putting the vehicle back into regular service.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/21V112000 |
|---|---|
| International customer service | 1-800-448-7825 |
| NHTSA recall # | 21V112 |
| NHTSA recall # (full) | 21V112000 |
Source documents
-
Download Owner Notification Letter (PDF) - Download Recall Report (PDF)
- Download Recall Acknowledgement (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on May 24, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →