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Cummins 3909890 Fan Support Assembly - Image 1
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Cummins 3909890 Fan Support Assembly


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MaterialDuctile Iron
Surface TreatmentCorrosion-Resistant Coating
Mounting TypeBolt-On to Front Gear Housing
FunctionCooling Fan Assembly Support and Alignment
Weight6.5 kg
Compatible Engine SeriesB Series, ISB, QSB
Manufacturer No.
390989039584125260996391343332859494938202526132249975963909889
OEM Part No.
390989039584125260996391343332859494938202526132249975963909889
Engine Part No.
Cummins ISB3.9Cummins ISB4.5Cummins ISB6.7Cummins QSB3.9Cummins 6BT5.9Cummins QSB6.7
Interchange No.
39584125260996391343332859494938202526132249975963909889
Fitment Vehicles
Komatsu PC200-8Dodge Ram 2500Dodge Ram 3500Heavy Duty TrucksHydraulic ExcavatorsGenerator SetsMarine Vessels

Cooling System - Industrial Encyclopedia

Genuine Cummins fan support bracket 3909890 engineered for ISB3.9, ISB4.5, ISB6.7, QSB3.9, 6BT5.9, and QSB6.7 diesel engines. Ensures precise cooling fan alignment and structural integrity under heavy-duty thermal cycling.