Use cautionVehicle recall · NHTSA · Published January 4, 2021
Navistar 2021 International LT: Parking Brake Air Leak Risk
Navistar recalls 2021 International LT trucks with potential air leak in parking brake causing crash risk. Owners notified via mail; free repairs available.
Navistar is recalling certain 2021 International LT trucks because a hole in the parking brake diaphragm could cause an air leak, making the brake engage unexpectedly and increasing crash risk. Affected vehicles need inspection and repair to prevent unintended braking. Read more at govinfonow.com/recall/80486-navistar-2021-international-lt-parking-brake-air-leak-risk.
“Navistar 2021 International LT: Parking Brake Air Leak Risk.” GovInfoNow, updated August 18, 2026. https://govinfonow.com/recall/80486-navistar-2021-international-lt-parking-brake-air-leak-risk. Based on NHTSA recall #21V226000 (https://www.nhtsa.gov/recalls?nhtsaId=21V226000).
Navistar, Inc. recalled certain 2021 International LT and RH vehicles on Jan. 4, 2021, according to the National Highway Traffic Safety Administration (NHTSA). A hole in the diaphragm may cause an air leak that engages the parking brake, increasing crash risk. Dealers will inspect and replace spring brake chambers free of charge.
How to tell if you have it
International LT, 2021
International RH, 2021
What to do
Navistar will notify owners, and dealers will inspect and, as necessary, replace the spring brake chambers, free of charge. Owner notification letters were mailed on May 28, 2021. Owners may contact Navistar customer service at 1-800-448-7825.
The hazard
A hole in the diaphragm may cause an air leak, causing the parking brake to engage and increasing the risk of a crash. The spring inside the spring brake chamber may allow the pressure plate to shift and wear a hole through the diaphragm.
Context
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 Nova Bus LFS Recall: Parking Brake Air Leak Hazard (2026-09-22), International 2023-2026 LT Vehicles: Service Brakes Risk of Unexpected Movement (2025-11-20), and Honda 2020 Acura ILX Brake Recall: Reduced Stop Distance Risk (2025-11-12).
How to tell if you have this one
Check if your 2021 International LT or International RH truck was mailed a notification letter dated May 28, 2021. The recall covers specific models from the 2021 model year.
Brand
Navistar
Category
Vehicle
Based on the official NHTSA remedy
What to do — step by step
Contact Navistar Customer Service
Call 1-800-448-7825 to confirm your vehicle is affected and schedule a repair.
Get Free Repair
Dealers will inspect and replace the spring brake chamber at no cost if needed.
Official remedy
What NHTSA says to do
Navistar will notify owners, and dealers will inspect and, as necessary, replace the spring brake chambers, free of charge. Owner notification letters were mailed on May 28, 2021. Owners may contact Navistar customer service at 1-800-448-7825. Navistar's number for this recall is 21502.
How this recall unfolded
Recall timeline
Owners were mailed letters 5 months after NHTSA received the defect report.
1NHTSA received the defect report
2Owner letters mailed
Dates from the agency record only; steps without a date are left out.
Subject: Recall 21V226000 — Navistar 2021 International LT: Parking Brake Air Leak Risk
Hello,
I own a Navistar 2021 International LT: Parking Brake Air Leak Risk that is covered by recall 21V226000 from Navistar.
The official recall notice states: Navistar will notify owners, and dealers will inspect and, as necessary, replace the spring brake chambers, free of charge. Owner notification letters were mailed on May 28, 2021. Owners may contact Navistar customer service at 1-800-448-7825. Navistar's number for this recall is 21502.
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.