Retainer not properly seated/fmvss 121
Defect Summary
Navistar, inc. (navistar) is recalling certain 2021 international lt, rh, mv, and hv vehicles equipped with bendix pressure switches. a retainer was not properly seated in the sc-3 single check valve and may not provide source air isolation when pressure is applied. as such, these vehicles fail to comply with the requirements of federal motor vehicle safety standard number 121, "air brake systems."
Safety Consequence
Unintended spring brake application may occur, increasing the risk of a crash.
Corrective Action
Navistar will notify owners, and dealers will replace the sc-3 check valves, 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 21503.
Similar Recalls
Other recalls from International Motors, Llc or involving N/A.
FAQ: Recall 21V227000
Your rights, the repair process, and what each field on this page means.
What is recall 21V227000?
NHTSA recall 21V227000 was issued by International Motors, Llc on April 1, 2021. It addresses: Retainer not properly seated/fmvss 121. The recall affects approximately 845 vehicles, with the defect involving the N/A component.
How do I get this recall repaired?
Contact any authorized International Motors, Llc dealer and reference NHTSA recall ID 21V227000 or the manufacturer campaign number 21503. Under federal law, the repair is completely free regardless of vehicle age or owner history.
Is my vehicle included in this recall?
The only way to confirm is to look up your 17-character VIN at nhtsa.gov/recalls. NHTSA's tool will tell you if VIN-by-VIN this exact recall applies.
How long do I have to get a recall repair done?
There is no expiration on most federal safety recalls. Even if your vehicle is years old and you bought it used, the manufacturer is required to perform the repair at no cost.
Where does the data on this page come from?
All information on this page is sourced directly from the U.S. Department of Transportation public dataset for NHTSA recalls. Last refreshed: 2026-05-22. For the most current official notice, visit nhtsa.gov/recalls.