2021 Oshkosh S-Series Recall: Auxiliary axles may not have been properly secured and may detach
NHTSA campaign 21V322000 · Suspension · filed May 6, 2021 · verified Jul 30, 2026
The defect
Oshkosh Corporation (Oshkosh) is recalling certain 2021 S-Series vehicles. The auxiliary axles may not have been properly secured and may detach.
The risk
A detached axle may cause a loss of vehicle control, increasing the risk of a crash.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →The fix — what to do
A technician will inspect and, as necessary, replace any improperly installed fasteners, free of charge. Owner notification letters were mailed on May 26, 2021. Owners may contact Oshkosh customer services at 1-888-686-7278.
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.
Affected vehicles
Related recalls
More Oshkosh S-Series recalls
- 2024–2025 Oshkosh S-Series — Front axle housing wall thickness may not be sufficient and…
- 2022–2024 Oshkosh S-Series — Throttle pedal assembly may contain an oversized magnet…
- 2019–2022 Oshkosh S-Series — Incorrectly installed alternator electrical cable clamps…
- 2019–2022 Oshkosh S-Series — U-bolts securing the front axle may fail
- 2019–2022 Oshkosh S-Series — Fuel tubes between the fuel rail and the injector for…
Other campaigns involving Oshkosh vehicles
Source: NHTSA recall database, campaign 21V322000. Data last verified Jul 30, 2026.