Affected vehicles may experience rear driveline disconnection. The recall applies to Ford F-350 Super Duty trucks.  - Photo: Ford Motor Co. 

Affected vehicles may experience rear driveline disconnection. The recall applies to Ford F-350 Super Duty trucks. 

Photo: Ford Motor Co. 

Ford is issuing a safety recall for approximately 34,939 Ford F-350 Super Duty vehicles with 6.7L engine and single rear wheel axle for a rear axle housing spring seat interface weld issue.

Affected vehicles may experience rear driveline disconnection. Customers may experience vibration and/or shaking while driving at highway speeds, and/or shuddering upon acceleration. In the event of a disconnected driveshaft, customers may experience loss of motive power while driving or loss of transmission park function if the parking brake is not applied, increasing the risk of a crash.  

This action affects 34,855 vehicles in North America, with the remaining balance in Ford’s International Markets Group. 

Vehicles were built at Kentucky Truck Plant between Aug. 6, 2020 and May 15, 2021. 

Ford is not aware of any accidents or injuries related to this condition.

Owner notifications will begin the week of Aug. 16. Dealers will inspect rear axle to determine if deformation is present. If the axle is deformed, the axle housing will be replaced. If axle is not deformed, the dealer will perform a weld repair on the spring seats. 

The Ford reference number for this recall is 21S31.

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