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2021 Oshkosh S-Series recalls

Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.

7 recalls found in NHTSA data as of September 22, 2026

For the 2021 Oshkosh S-Series. These apply to the model and year, not to one particular vehicle: check your VIN to see whether yours is included and whether it has been repaired.

Has your Oshkosh been repaired?

Recalls here come from NHTSA’s records for the model and year. Not every vehicle of a model is included in every recall, and this site can’t see whether a repair has been done. Only a VIN lookup can tell you that.

NHTSA’s VIN search doesn’t show recalls that were already repaired, recalls more than 15 years old, or some small manufacturers’ recalls. A Oshkosh dealer can also check your VIN. Recall repairs are free.

2021 Oshkosh S-Series recalls, newest first

May 26, 2022NHTSA 22V3780001,316 vehicles potentially affected

Electrical system › Alternator/generator/regulator

Summary
Oshkosh Corporation (Oshkosh) is recalling certain 2019-2022 S-Series 2.0 Concrete Mixers. Incorrectly installed alternator electrical cable clamps may rub against the vehicle frame or hydraulic hose, possibly damaging the alternator cables.
Consequence
Damaged alternator electrical cables can increase the risk of a fire.
Remedy
Oshkosh will provide instructions on how to inspect the wiring, reposition the clamps, and properly secure the cables. The repair can be performed by the owner or an Oshkosh service center, free of charge. Owner notification letters were mailed on June 23, 2022. Owners may contact Oshkosh's customer service at 1-888-686-7278.

This recall on nhtsa.gov

January 11, 2022NHTSA 22V0090001,268 vehicles potentially affected

Suspension › Multiple axle

Summary
Oshkosh Corporation (Oshkosh) is recalling certain 2019-2022 S-Series vehicles. The u-bolts securing the front axle may fail.
Consequence
Bolt failure may allow the front axle to shift or detach, increasing the risk of a crash.
Remedy
Oshkosh will provide new u-bolts, free of charge. Owner notification letters were mailed February 24, 2022. Owners may contact Oshkosh customer service at 1-888-686-7278.
Components
Suspension › Multiple axle; Suspension › Front › Springs › Leaf spring assembly › U-bolt, leaf spring to axle

This recall on nhtsa.gov

January 11, 2022NHTSA 22V0080001,608 vehicles potentially affected

Fuel system, diesel › Fuel injection system › Fuel rail

Summary
Oshkosh Corporation (Oshkosh) is recalling certain 2019-2022 S-Series vehicles. The fuel tubes between the fuel rail and the injector for cylinders 4, 5 and 6 may be susceptible to cracking, resulting in a high pressure fuel leak.
Consequence
A high pressure fuel leak in the presence of an ignition source may increase the risk of a fire.
Remedy
On engines with 75 miles or less, dealers will install vibration isolators to the fuel tubes. Engines with more than 75 miles will receive new fuel tubes with vibration isolators. Repairs will be performed free of charge. Owner notification letters are expected to be mailed February 1, 2022. Owners may contact Oshkosh customer service at 1-8088-686-7278.

This recall on nhtsa.gov

November 2, 2021NHTSA 21V851000697 vehicles potentially affected

Steering › Hydraulic power assist › Pump

Summary
Oshkosh Corporation (Oshkosh) is recalling certain 2020-2021 S-Series vehicles. A machining defect may cause pressure to build in the power steering pump and break the shaft seal, resulting in a loss of power steering assist.
Consequence
A loss of power steering assist increases the risk of a crash.
Remedy
Owners will inspect and replace the power steering pump as necessary. Owners may perform this work themselves or reach out to one of our service centers to perform the inspection and repair work free of charge. Owner notification letters were mailed on December 15, 2021. Owners may contact Oshkosh customer service at 1-888-686-7278.

This recall on nhtsa.gov

June 27, 2021NHTSA 21V482000897 vehicles potentially affected

Electrical system › Wiring › Fuses and circuit breakers

Summary
Oshkosh Corporation (Oshkosh) is recalling certain 2019-2022 S-Series vehicles. These vehicles were manufactured with 10 amp Anti-Lock Brake System (ABS) fuses, instead of the required 15 amp ABS fuses.
Consequence
The incorrectly sized fuse may blow during an ABS braking event, increasing the risk of a crash.
Remedy
Oshkosh will provide owners new fuses, a new fuse label, and installation instructions, free of charge. Owner notification letters were mailed on July 29, 2021. Owners may contact Oshkosh customer service at 1-888-686-7278.

This recall on nhtsa.gov

May 6, 2021NHTSA 21V32200047 vehicles potentially affected

Suspension › Multiple axle

Summary
Oshkosh Corporation (Oshkosh) is recalling certain 2021 S-Series vehicles. The auxiliary axles may not have been properly secured and may detach.
Consequence
A detached axle may cause a loss of vehicle control, increasing the risk of a crash.
Remedy
A technician will inspect and, as necessary, replace any improperly installed fasteners, free of charge. Owner notification letters were mailed on May 26, 2021. Owners may contact Oshkosh customer services at 1-888-686-7278.

This recall on nhtsa.gov

February 26, 2021NHTSA 21V12500019 vehicles potentially affected

Power train › Automatic transmission › Internal › Shaft › Output

Summary
Oshkosh Corporation (Oshkosh) is recalling certain 2020-2021 S-Series vehicles. The rear axle output shaft may not have been heat-treated properly, which could cause the shaft to fracture.
Consequence
A fractured rear output shaft may cause the shaft or interaxle driveline to detach from the vehicle, increasing the risk of a crash or injury.
Remedy
Oshkosh will notify owners, and owners will be instructed to inspect the output shaft, and if necessary, order a new one and replace it, free of charge. The recall began on March 31, 2021. Owners may contact Oshkosh customer service at 1-888-686-7278.
Components
Power train › Automatic transmission › Internal › Shaft › Output; Power train › Manual transmission › Internal › Shaft › Output

This recall on nhtsa.gov

Owner complaints

No owner complaints about the 2021 Oshkosh S-Series were found in NHTSA’s complaint data.

Other Oshkosh S-Series years

Most recalled 2021 vehicles

  1. 2021 Ford F-150 (29 recalls)
  2. 2021 Lincoln Aviator (28 recalls)
  3. 2021 Ford Explorer (26 recalls)
  4. 2021 Blue Bird Vision School Bus (26 recalls)
  5. 2021 Tesla Model X (24 recalls)
All of 2021’s most recalled vehicles

Questions

Does the 2021 Oshkosh S-Series have any recalls?
7 recalls found in NHTSA data as of September 22, 2026, covering: electrical system, suspension, fuel system, diesel, steering, power train. Recalls apply to the model and year; whether a particular vehicle is included, and whether it has been repaired, depends on its VIN.
How do I check if my 2021 Oshkosh S-Series recall has been fixed?
Enter your 17-character VIN at nhtsa.gov/recalls, or ask a Oshkosh dealer. Recall repairs are free. NHTSA's VIN search doesn't list recalls that were already repaired.
How many complaints have owners filed about the 2021 Oshkosh S-Series?
0 complaints filed with NHTSA. Complaints are unverified reports from the public that NHTSA uses to decide what to investigate.