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Ford F-350 SD Recall 21V390: Front Wheel Extenders May Detach, Raising Crash Risk

NHTSA campaign 21V390, reported May 25, 2021, 17,616 vehicles potentially affected.

What this recall means for you

On certain heavy-duty trucks with dual rear wheels and front wheel hub extenders, the front wheel hub extenders may not be properly attached to the front rotor hub assemblies. If this happens, the wheels and wheel extenders could separate from the vehicle while it is being driven.

A detached wheel and wheel extender can significantly increase the risk of a crash. Do not drive your vehicle until the torque of the wheel extender nuts has been verified. Contact an authorized Ford dealer to have the front wheel hub extender nuts inspected and tightened.

The repair is free of charge at an authorized dealer. Owner notification letters were mailed on June 18, 2021. You can also contact Ford customer service at 1-866-436-7332, and check your vehicle identification number (VIN) for any open recalls.

Check whether this recall is open on your vehicle

The repair is normally free at an authorized dealer.

Official recall notice

Safety recall 21V390Ford Motor Company
Component
POWER TRAIN:AXLE HUBS
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.
Risk
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.

Affected vehicles

Ford F-350 SD2021
Ford F-450 SD2021
Ford F-550 SD2021
Ford F-600 SD2021