Use cautionVehicle recall · NHTSA · Published February 24, 2021
Navistar 2021 International LT Vehicles: Engine Recall Risk of Crash
Navistar recalls 2021 International LT trucks with Cummins X15 engines due to potential flywheel detachment causing crash risk. Owners must contact Navistar for free repairs.
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.
“Navistar 2021 International LT Vehicles: Engine Recall Risk of Crash.” GovInfoNow, updated August 18, 2026. https://govinfonow.com/recall/80487-navistar-2021-international-lt-vehicles-engine-recall-risk-of-crash. Based on NHTSA recall #21V112000 (https://www.nhtsa.gov/recalls?nhtsaId=21V112000).
Navistar, Inc. recalled 2021 International LT vehicles with Cummins X15 engines due to a detached flywheel hazard that can cause loss of drive power and eject driveline pieces, according to the National Highway Traffic Safety Administration (NHTSA) in a recall announced on 2021-02-24. Owners should contact Navistar customer service at 1-800-448-7825.
How to tell if you have it
International LT, 2021
What to do
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.
The hazard
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.
Context
GovInfoNow's records show Navistar, Inc. has 185 other recalls on record since 2008-11-24. Other recent recalls of similar products include Navistar 2024-2025 School Buses: Brake Caliper Detachment Risk (2024-10-02), Navistar 2025 CV Vehicles: Air Bags May Not Deploy in Crashes (2024-10-01), and Navistar 2025 International LT Vehicles: Fuel Pump Leak Risk (2024-10-01). Other recent recalls of similar products include Mack 2025 TerraPro Recall: Loose Steering Gearbox Risk (2026-08-06), Mack TerraPro (TE) 2022-2027 Trucks: Engine Starts in Gear Risk (2026-03-11), and Ford 2026 F-150 Power Train Recall: Risk of Loss of Control (2026-09-09).
How to tell if you have this one
Check if your 2021 International LT truck has a Cummins X15 engine. The recall began on March 29, 2021, and affects vehicles purchased from March 2021 onward.
Brand
Navistar
Category
Vehicle
Based on the official NHTSA remedy
What to do — step by step
Contact Navistar
Call Navistar customer service at 1-800-448-7825 to schedule a free repair for the engine.
Official remedy
What NHTSA says to do
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.
How this recall unfolded
Recall timeline
2 dated steps over 33 days.
1NHTSA received the defect report
2Recall began
Dates from the agency record only; steps without a date are left out.
Take action
Contact Navistar
We’ve drafted a message you can send Navistar to request your refund or repair — edit it as you like.
Subject: Recall 21V112000 — Navistar 2021 International LT Vehicles: Engine Recall Risk of Crash
Hello,
I own a Navistar 2021 International LT Vehicles: Engine Recall Risk of Crash that is covered by recall 21V112000 from Navistar.
The official recall notice states: 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.
I’m writing to arrange the remedy described in the recall (a refund, repair, or replacement as applicable). Could you please tell me the next steps to resolve this?
Thank you.
The facts (hazard, remedy, dates, manufacturer) are pulled from the official NHTSA recall record. The plain-language summary and step-by-step checklist are written by GovInfoNow to make the official notice easier to act on — they don’t replace it.
Plain-language summary written by qwen3:4b on August 18, 2026, from the official record above. Not reviewed by a person — if it conflicts with the NHTSA notice, the notice is correct. Report an error on this page.
GovInfoNow is an independent service and is not a government agency. We republish official NHTSA recall data; we don’t issue, amend or administer recalls.