CATCooling System

3709333 Core As-Aftercooler — Cat 789

This is an aftercooler core, a critical component within the engine's cooling system responsible for reducing the temperature of the intake air charge. It is manufactured to meet stringent OEM specifications, ensuring superior performance and durability compared to a worn or damaged unit which would exhibit reduced heat transfer capabilities. Operators may notice a significant loss of engine power, increased exhaust temperatures, and potential overheating warnings when this component fails.

Core As-Aftercooler – Part No 3709333 – 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 TypeAftercooler Core
MaterialAluminum and Steel
ApplicationEngine cooling system
Service LifeReplace as needed based on inspection
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A common initial symptom of aftercooler failure is a noticeable reduction in engine power and acceleration. If left unaddressed, the engine may begin to run hotter, leading to increased fuel consumption and potential damage to internal components. Continued operation with a compromised aftercooler can result in severe engine overheating and costly repairs.

Installation Tip

Ensure the mounting surfaces on both the engine and the aftercooler are perfectly clean and free of debris before installation. Overtightening the mounting bolts can distort the core, leading to leaks or premature failure.

Service Note

Inspect radiator hoses and clamps for signs of wear or leakage when replacing the aftercooler core.