CATEngine Parts

374-3545 Aftercooler — Cat C18

This aftercooler is a heat exchanger designed to cool the compressed air from the turbocharger before it enters the engine cylinders, increasing air density for better combustion. It is constructed with high-quality materials to ensure efficient heat transfer and durability under high pressure and temperature conditions. Operators may notice a significant loss of engine power, increased exhaust gas temperatures, or overheating if the aftercooler is leaking or blocked.

Aftercooler – Part No 374-3545 – CAT Spare Part
Part Specifications
BrandCAT
CategoryEngine Parts
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

Inspect mating surfaces for wear before fitting. Use torque specs from service manual. Replace gaskets and seals as a set — reusing compressed gaskets causes oil leaks. Clean all oil passages with compressed air.

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

Part TypeAftercooler (Charge Air Cooler)
MaterialAluminum and Steel
ApplicationEngine Turbocharged Air System
Service LifeInspect every 1000 hrs, replace as needed
CompatibilityCAT C18, 345, 836H, 836G, 83
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first indication of an aftercooler issue is often a noticeable drop in engine power and performance, especially under load. If the aftercooler is leaking, you might observe white smoke from the exhaust due to coolant or oil contamination, or an increase in engine operating temperature. A severely compromised aftercooler can lead to significant engine damage and reduced operational capability.

Installation Tip

Ensure all mounting surfaces are clean and free of debris before installing the new aftercooler. Properly torque all connections according to the service manual to prevent air or coolant leaks.

Service Note

Inspect the turbocharger, intake piping, and engine coolant system for any leaks or blockages when replacing the aftercooler.