Ford · United States · High
Ford F-550 SD, F-350 SD +2 more: Power train — axle hubs
Affects Ford F-550 SD, F-350 SD, F-600 SD, F-450 SD · 2021 — about 18K vehicles.
The hazard
A detached wheel and wheel extender can increase the risk of a crash.
What to do
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.
Critical — crash/injury risk now
High — injury risk; see remedy
Moderate — fix at next service
Low — minor / informational