Thomas Built School Buses Recalled for Engine Fan Pulley Defect
Daimler Trucks North America is recalling 2011-2013 Thomas Built school buses equipped with specific Cummins diesel engines due to a fan pulley defect that can cause engine overheating and vehicle disablement.
What this means for you
Real risk of harm even if no illness or injury has been reported yet. Stop using the product and follow the agency's guidance.
Our severity reasoning: The recall involves a mechanical defect that can disable a school bus, posing a risk of injury to occupants who must exit the vehicle, but no specific injuries or fatalities are reported in the source text.
Plain-English summary
Daimler Trucks North America (DTNA) is recalling certain model year 2011 through 2013 Thomas Built school buses manufactured between March 2010 and July 2012. The recall affects vehicles equipped with Cummins ISB6.7 diesel engines manufactured from February 16, 2010, through May 4, 2012, that contain a specific fan pulley (part number 3914462). This pulley is part of the accessory drive system on the front of the engine, which drives components such as the refrigerant compressors, radiator fan, and engine water pump.
The web of the fan pulley can fatigue over time, causing the pulley to fail. If this occurs, the fan belt may lose engagement of the water pump, allowing the cooling system to overheat. This may result in exceeding temperature limits, potentially disabling the school bus. If the school bus is occupied when it becomes disabled, the occupants would need to exit the vehicle and be transferred to another vehicle, putting them at risk of injury.
Cummins will notify owners of the recall. Repairs will be performed by Cummins authorized service facilities, where a new fan drive pulley will be installed free of charge. The safety recall began on January 4, 2013. Owners may contact Cummins at 1-812-377-5000 or DTNA at 1-800-547-0712. 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.safercar.gov.
The recalled product
- Product
- THOMAS BUILT, THOMAS BUILT BUSES SAF-T-LINER C2
- Brand
- THOMAS BUILT
- Manufacturer
- Daimler Trucks North America
- Category
- Vehicle — School Bus
- Affected units
- 6,296
Is your product affected?
Check your packaging against the codes below. If any of them match, the product is part of this recall.
Model numbers (1)
- SAF-T-LINER C2
Distribution
Distributed nationwide across the United States.
Related recalls
Same brand · THOMAS BUILT
- Severe
- HighThomas Built Minotour School Bus Seat Barrier Recall
NHTSA · 2013-10-30
- Severe2013 Thomas Built Minotour School Bus Floor Bond Recall
NHTSA · 2013-09-18
- High
- HighThomas Built 161TS School Buses Recalled for Seat Cushion Defect
NHTSA · 2010-04-09
Same manufacturer · Daimler Trucks North America
See all →- SevereDaimler Recalls Thomas Built Buses Due to Intake Manifold Sensor Defect
NHTSA · 2014-02-21
- SevereDaimler Trucks Recalls 2008-2015 Vehicles Due to Intake Manifold Defect
NHTSA · 2014-02-21
- Severe
- HighThomas Built Buses Recalls 2014-2015 Saf-T-Liner EFX School Buses
NHTSA · 2013-12-20
- High
Same hazard · mechanical failure
See all →- HighIMRIS ORT200 Operating Room Table Recalled for Mechanical Failure Risk
FDA (Devices) · 2026-09-02
- HighIMRIS ORT300 Operating Room Table Recalled for Mechanical Failure Risk
FDA (Devices) · 2026-09-02
- HighForest River Transit Buses Recalled for Wheelchair Lift Control Failure
NHTSA · 2026-09-01
- HighBlue Bird Recalls Vision School Buses Due to Wheelchair Lift Defect
NHTSA · 2026-08-31
- SevereMagic Tilt Watercraft Trailers Recalled Due to Winch Weld Failure
NHTSA · 2026-08-28