CATEngine Parts

243-6741 Cylinder Head Assembly — Cat 3406 C12

This is a CAT Cylinder Head Assembly, a critical component of the engine's combustion system responsible for sealing the cylinders and housing valves. It is manufactured to meet the high-pressure and temperature demands of CAT engines, ensuring efficient combustion and emissions control. Operators may experience a loss of engine power, rough idling, coolant loss into the cylinders, or white exhaust smoke if this assembly fails.

Cylinder Head Assembly – Part No 243-6741 – 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 TypeCylinder Head Assembly
MaterialCast Iron, Steel Alloys
ApplicationEngine Combustion System
Service LifeReplace as needed based on inspection and engine condition
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A failing cylinder head assembly might initially manifest as coolant loss without an external leak or a rough-running engine. If ignored, the problem can progress to internal coolant contamination, oil dilution, and a significant loss of compression and power. The ultimate risk is severe engine damage due to overheating or internal component failure.

Installation Tip

Ensure the cylinder head mounting surfaces on both the head and the engine block are perfectly clean and flat before installation. Always use new head bolts and torque them in the specified sequence and stages.

Service Note

When installing a new cylinder head assembly, always replace the head gasket and inspect the engine block deck for flatness.