CATEngine Parts

254-4339 Fuel Injector — Cat 330D

This fuel injector is a precision-engineered component that atomizes and delivers fuel directly into the engine's combustion chamber at high pressure. It is manufactured to meet Caterpillar's exact specifications for spray pattern, flow rate, and timing, ensuring optimal combustion efficiency and power output compared to a worn injector. Operators may notice rough engine idling, a decrease in fuel economy, increased exhaust emissions, or engine misfires when this fuel injector begins to fail.

Fuel Injector – Part No 254-4339 – 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 TypeFuel Injector
MaterialHardened steel and specialized alloys
ApplicationEngine fuel injection system
Service LifeReplace as needed based on performance diagnostics
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Initial symptoms of a faulty fuel injector often include rough engine running, particularly at idle, and a noticeable drop in fuel efficiency. If left unaddressed, this can lead to increased exhaust smoke, engine misfires, and potential damage to other engine components due to incomplete combustion. The equipment may experience a significant loss of power.

Installation Tip

Thoroughly clean the injector bore in the cylinder head before installing the new injector to ensure a proper seal. Avoid reusing old copper sealing washers, as they are designed for single use and can cause leaks.

Service Note

Inspect the fuel lines, fuel filter, and engine compression when replacing fuel injectors.