The problem
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.
The risk
A detached wheel and wheel extender can increase the risk of a crash.
The fix
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.
Recall details
| NHTSA campaign | 21V-390 (21V390000) |
|---|---|
| Manufacturer number | 21S26 |
| Manufacturer | Ford Motor Company |
| Component | Power train › Axle hubs |
| Report date | May 25, 2021 |
| Owners notified | June 18, 2021 |
| Vehicles affected | 17,616 |
| Initiated by | Manufacturer |
Vehicles covered
Owner complaints about the transmission & drivetrain
Frequently asked questions
Is the recall 21V-390 repair free?
Yes. Ford dealers will fix the problem at no cost: 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.
How do I know if my car is included?
Not every vehicle of the listed model years is affected — the recall covers 17,616 vehicles built in a certain window. Check your 17-character VIN with our VIN recall check or at nhtsa.gov/recalls.
Is it safe to drive?
No — the manufacturer says owners should not drive affected vehicles until the repair is done. Contact a dealer to arrange towing.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.