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Ford F-350 Rear Axle Driveshaft Separation
high How serious is it? About this label
Driveshaft separation can cause a loss of drive power or unintended vehicle movement, increasing the risk of a crash. The notice does not tell owners to stop driving.
Key facts
| NHTSA campaign number | 21V536000 |
|---|---|
| Reported to NHTSA | Jul 15, 2021 |
| Manufacturer | Ford Motor Company |
| Part affected | Power Train:axle Assembly |
| Vehicles covered | 2 model/year combinations, model years 2020–2021 |
| Do-not-drive advisory | No |
| Park-outside advisory | No |
| Repair | Free at any franchised dealer |
What's wrong, in plain English
On some F-350 Super Duty trucks with a 6.7L diesel engine and Dana 275 rear axle, the rear axle housing may not be strong enough to support the truck's weight. Over time it can deform, or bend out of shape, which may cause the driveshaft to separate. This separation can lead to a sudden loss of power to the wheels, or in some cases the truck may move on its own if it is left in park without the parking brake set.
What you should do
2. Contact a Ford dealer for an inspection; you can also call Ford customer service at 1-866-436-7332 (recall 21S31).
3. Any needed axle housing repair or replacement is free.
Where do I find my VIN, and what do I tell the dealer?
Your VIN is the 17-character code on the lower left of the windshield, on your registration and usually on your insurance card. Enter it at nhtsa.gov/recalls to see whether this recall is still open on your car. When you call the dealer, say you have an open safety recall and give them NHTSA campaign number 21V536000. More in how recalls work.
Affected vehicles (2)
Who to contact
Ford — official Ford recall lookup
Customer service: 1-866-436-7332
The bigger picture
- Ford Powertrain Recalls Involving Fluid Leaks and Wheel Detachment · all 56 Ford recalls in this area
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- Mar 3, 2026Ford F-350 driveshaft weld may fail suddenlycritical
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Official notice
- Component
- POWER TRAIN:AXLE ASSEMBLY
- Summary
- Ford Motor Company (Ford) is recalling certain 2020-2021 F-350 Super Duty pickup trucks equipped with 6.7L diesel engines and Dana model 275 rear axles. The rear axle housing may not support the load of the pickup truck and deform, which could result in driveshaft separation.
- Safety risk
- Driveshaft separation may result in a loss of drive power, or unintended vehicle movement if the vehicle is in park without the parking brake applied, increasing the risk of a crash.
- Remedy
- Dealers will inspect the axle housing for deformities, and repair or replace the housing, as necessary, free of charge. Owner notification letters were mailed on September 3, 2021. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall 21S31.
Verify your specific vehicle by VIN at nhtsa.gov. Recall repairs are free of charge by law.