Vehicle recall 21V390000 · May 25, 2021
Ford F-350 SD, F-450 SD and 2 more models
The front wheel hub extenders may be improperly attached to the front rotor hub assemblies, which could result in separation of the wheels and wheel extenders from the vehicle.
Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.
Do not drive affected vehicles until they are repaired. This is the manufacturer’s safety advisory for this recall.
- Summary
- Ford Motor Company (Ford) is recalling certain 2021 F-350, F-450, F-550, and F-600 vehicles equipped with dual rear wheels and front wheel hub extenders. The front wheel hub extenders may be improperly attached to the front rotor hub assemblies, which could result in separation of the wheels and wheel extenders from the vehicle.
- Consequence
- A detached wheel and wheel extender can increase the risk of a crash.
- Remedy
- Owners are instructed not to drive their vehicles until the torque of the wheel extender nuts can be verified. Dealers will inspect and tighten the front wheel hub extender nuts, free of charge. Owner notification letters were mailed on June 18, 2021. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 21S26.
- Notes
- 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.nhtsa.gov.
Recall details
- NHTSA campaign
- 21V390000
- Reported to NHTSA
- May 25, 2021
- Filed by
- Ford Motor Company
- Manufacturer campaign
- 21S26
- Owner notification
- June 18, 2021
- Vehicles potentially affected
- 17,616
- Initiated by
- the manufacturer
- Components
- Power train › Axle hubs
Vehicles covered
As listed by NHTSA. A recall usually covers only some vehicles of each model and year, often a production date range.
- Ford F-350 SD (2021): 2021
- Ford F-450 SD (2021): 2021
- Ford F-550 SD (2021): 2021
- Ford F-600 SD (2021): 2021
Has your Ford been repaired?
Recalls here come from NHTSA’s records for the model and year. Not every vehicle of a model is included in every recall, and this site can’t see whether a repair has been done. Only a VIN lookup can tell you that.
NHTSA’s VIN search doesn’t show recalls that were already repaired, recalls more than 15 years old, or some small manufacturers’ recalls. Recall repairs are free.