CATEngine Parts

243-5063 Aftercooler — Cat

This aftercooler is a heat exchanger designed to cool the intake air charge after it leaves the turbocharger and before it enters the engine cylinders. By reducing intake air temperature, it increases air density, allowing for more efficient combustion and improved engine power and fuel economy. Operators may notice a significant loss of engine power, increased exhaust gas temperatures, and potentially higher fuel consumption if the aftercooler is leaking or its cooling efficiency is compromised.

Aftercooler – Part No 243-5063 – 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 TypeEngine Aftercooler
MaterialAluminum or copper alloy
ApplicationEngine intake air cooling
Service LifeReplace as needed based on inspection
CompatibilityCAT C7, C9 Engines
ConditionNew — OEM specification aftermarket

Failure Symptoms

A failing aftercooler typically presents as a noticeable reduction in engine power and responsiveness, especially under load. Operators might also observe increased exhaust smoke or higher than normal exhaust gas temperatures. If the aftercooler develops leaks, it can lead to oil contamination in the intake or coolant system, potentially causing severe engine damage.

Installation Tip

Ensure all sealing surfaces for the coolant and air connections are perfectly clean and smooth before assembly. Overtightening clamps or bolts can damage the aftercooler core or mounting flanges.

Service Note

Inspect the turbocharger for oil leaks or excessive shaft play, and clean the engine's primary radiator and cooling fins.