CATCooling System

3n8449 3N7790, 7C3613 — Cat 320C 320D

This fan assembly is a crucial part of the engine's cooling system, designed to draw ambient air through the radiator to dissipate heat. It is manufactured to meet strict quality standards, providing effective cooling and durability compared to a worn or bent fan. Symptoms of failure include engine overheating, unusual noises from the engine bay, and a visible wobble or imbalance of the fan.

3N7790, 7C3613 – Part No 3n8449 – CAT Spare Part
Part Specifications
BrandCAT
CategoryCooling System
ConditionAftermarket — OEM Specification
DispatchSame-day from Mumbai (before 3 PM IST)
GST InvoiceAvailable — all orders
Export DocsCommercial invoice, packing list, COO

Compatible Models

Always verify with serial number before ordering.

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Installation & Application Notes

Flush cooling system with distilled water before refilling. Use pre-mixed coolant — never plain water, which causes corrosion. Pressure-test system after any cooling repair. Check thermostat by immersing in hot water — should open at rated temperature.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Part TypeFan Assembly
MaterialReinforced polymer or metal
ApplicationEngine cooling system
Service LifeReplace as needed based on inspection or failure
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A failing fan assembly may initially present as an audible imbalance, such as a rhythmic flapping or rattling noise, or increased vibration felt through the chassis. If ignored, this can lead to insufficient cooling, causing the engine temperature to rise, especially under load. The risk of radiator damage or premature engine wear increases significantly if the fan continues to operate in a compromised state.

Installation Tip

Ensure the fan mounting bolts are torqued to the manufacturer's specification to prevent loosening or damage to the fan hub. Do not use excessive force when aligning the fan with the pulley, as this can bend the fan blades.

Service Note

Inspect the fan belt for wear and proper tension, and check the radiator for any signs of damage or blockage.