Belt pulley may fail causing engine overheat
Defect Summary
Cummins is recalling certain model isb6.7 diesel engines manufactured from february 16, 2010, through may 4, 2012, equipped with fan pulley part number 3914462 and installed on certain thomas built buses, inc. School buses. the subject fan pulley is part of the accessory drive system on the front of the engine. this system is used to drive such components as the refrigerant compressors, the radiator fan, and the engine water pump. the web of the pulley can fatigue over time, causing the pulley to fail.
Safety Consequence
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.
Corrective Action
Cummins will notify thomas built of this defect and the potential safety consequences, and will work with them to identify and notify the affected owners. cummins will install a new fan drive pulley, without charge, through cummins' service network. the recall began on november 27, 2012. notification to owners began on january 4, 2013. owners may contact cummins at 1-812-377-5000.
Similar Recalls
Other recalls from Cummins, Inc. or involving Engine And Engine Cooling.
FAQ: Recall 12E054000
Your rights, the repair process, and what each field on this page means.
What is recall 12E054000?
NHTSA recall 12E054000 was issued by Cummins, Inc. on November 29, 2012. It addresses: Belt pulley may fail causing engine overheat. The recall affects approximately 7,040 vehicles, with the defect involving the Engine And Engine Cooling component.
How do I get this recall repaired?
Contact any authorized Cummins, Inc. dealer and reference NHTSA recall ID 12E054000 or the manufacturer campaign number C1296. Under federal law, the repair is completely free regardless of vehicle age or owner history.
Is my vehicle included in this recall?
The only way to confirm is to look up your 17-character VIN at nhtsa.gov/recalls. NHTSA's tool will tell you if VIN-by-VIN this exact recall applies.
How long do I have to get a recall repair done?
There is no expiration on most federal safety recalls. Even if your vehicle is years old and you bought it used, the manufacturer is required to perform the repair at no cost.
Where does the data on this page come from?
All information on this page is sourced directly from the U.S. Department of Transportation public dataset for NHTSA recalls. Last refreshed: 2026-05-22. For the most current official notice, visit nhtsa.gov/recalls.