Cummins Fan Support 3958412 for B6.7 ISB6.7 ISF3.8 ISF4.5 QSB3.9 QSB4.5 CM2250

The Cummins Fan Support 3958412 is a critical engine cooling component engineered to securely mount and support the engine cooling fan on a wide range of Cummins diesel engines, including B6.7, ISB6.7, ISF3.8, ISF4.5, QSB3.9, and QSB4.5, including CM2250 emission platform engines.

Designed to maintain correct fan alignment and rotational stability, this fan support plays a vital role in preventing vibration, bearing failure, and premature fan or belt wear. Manufactured to OEM specifications using high-strength materials, it withstands continuous engine heat, rotational load, and vibration under heavy-duty operating conditions.

A failing fan support can lead to cooling inefficiency, abnormal noise, belt damage, and potential engine overheating. Replacing it with the 3958412 fan support restores proper cooling system operation, protects related components, and ensures long-term engine reliability. It is ideal for engine maintenance, cooling system repairs, and preventive service in commercial, industrial, and off-highway applications.

✔ PRODUCT FEATURES & COMPONENTS

• OEM-quality Fan Support Assembly – Part No. 3958412

• Provides stable mounting and alignment of engine cooling fan

• Precision-machined for smooth rotation and reduced vibration

• Heavy-duty construction resists heat, load, and engine vibration

• Direct-fit replacement for multiple Cummins engine platforms

• Helps prevent belt wear, fan wobble, and bearing failure

• Supports efficient airflow and consistent engine cooling

• Suitable for on-highway, off-highway, and industrial engines

✅ ENGINE COMPATIBILITY

• Cummins B6.7

• Cummins ISB6.7

• Cummins ISF3.8

• Cummins ISF4.5

• Cummins QSB3.9

• Cummins QSB4.5

• Cummins CM2250 platform engines

✅ VEHICLE & EQUIPMENT APPLICATIONS

• Heavy-duty trucks and buses

• Construction and industrial equipment

• Agricultural machinery

• Diesel generator sets

• Off-highway and commercial vehicles using Cummins engines

✅ KEY FEATURES & BENEFITS

• Proper Fan Alignment: Maintains correct fan positioning and balance

• Improved Cooling Efficiency: Ensures consistent airflow through radiator

• Reduced Vibration: Minimizes fan wobble and belt stress

• OEM Direct Replacement: No modification required

• Durable Construction: Designed for long service life in harsh environments

• Engine Protection: Helps prevent overheating and cooling system damage

• Reliable Performance: Supports stable engine operation under heavy load