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April 15, 2021 Service bulletin

Certain 2020 Model Year Super Duty F250-F600 Vehicles Equipped with a 10R140 Transmission

Ford technical service bulletin 21B03-S2 for 2020 Ford F-250 SD, 2020 Ford F-350 SD and 2020 Ford F-450 SD and others.

Bulletin number
21B03-S2
Component
Power train
Summary
Certain 2020 Model Year Super Duty F250-F600 Vehicles Equipped with a 10R140 Transmission - Number One Planetary and Ring Gear Assembly Additional vehicles are now eligible for this repair. Vehicles with a 4.30 axle gear ratio, Vehicles with a 4.10 axle gear ratio, Vehicles with a 4.88 axle gear ratio, Emergency vehicles and wrecker vehicles.

Owners of these vehicles have filed 133 complaints in the transmission category.

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