International Lt, International Rh, model year 2021. Filed by Navistar, Inc. and reported to NHTSA on 1 April 2021. 615 vehicles potentially affected.
What the notice says Navistar, Inc. (Navistar) is recalling certain 2021 International LT and International RH vehicles. The spring inside the spring brake chamber may allow the pressure plate to shift and wear a hole through the diaphragm.
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.
Navistar's own number for this recall: 21502. That is the number on the owner letter and on the dealer paperwork. 21V226 is the number NHTSA gave the same campaign, and the number this page is filed under. They are one recall, written two ways.
What owners ask about this recall
- Which vehicles does recall 21V226 cover?
- International LT, International RH, model year 2021.
- What is wrong with them?
- Navistar, Inc. (Navistar) is recalling certain 2021 International LT and International RH vehicles. The spring inside the spring brake chamber may allow the pressure plate to shift and wear a hole through the diaphragm.
- What can happen if it is not put right?
- A hole in the diaphragm may cause an air leak, causing the parking brake to engage and increasing the risk of a crash.
- Is there a fix yet?
- Yes, and it is free. 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.
- What should I do now?
- Check your own vehicle by its VIN with NHTSA, which is the record to act on. Navistar calls this recall 21502, which is the number on the owner letter and the dealer paperwork.
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 hole in the diaphragm may cause an air leak, causing the parking brake to engage and increasing the risk of a crash.”
affected
in the notice
caught
| Campaign | 21V226 |
|---|---|
| Filed by | Navistar, Inc. |
| System at fault | Parking Brake |
| Reported to NHTSA | 1 April 2021 |
| Model years | 2021-2021 |
| Vehicles named | INTERNATIONAL LT, INTERNATIONAL RH |
What the notice says today
The consequence
A hole in the diaphragm may cause an air leak, causing the parking brake to engage and increasing the risk of a crash.
The remedy
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.
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 175 notices in the record whose component field names parking brake. Across that group the median wait before owners were written to was 49 days.
Last checked . No change has been recorded in the wording.
The models named here, across their whole recall history
How to cite this record
Quoting the wording on this page means quoting a version, so the date belongs in the citation:
CarsMultiverse, recall 21V226, wording as read on 16 September 2026. https://carsmultiverse.com/recall/21v226/
The cross-border matches used on this site are deposited as a citable dataset: doi:10.5281/zenodo.22087136. The recall wording itself is published by the national authority named above and is theirs, not ours.
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 21V226 on 23 August 2026, they were:
- Defect summary
e15d0ca0 - Consequence
60d8fd09 - Remedy
f241f080
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 21V226 · how the whole register is watched
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Owners of these cars
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