CATEngine Parts

254-4340 Fuel Injector — Cat 330D 336D

This is a high-pressure fuel injector designed to deliver a precise amount of fuel into the combustion chamber at the optimal time. Manufactured to strict tolerances, it ensures efficient fuel atomization and combustion, unlike a worn injector which may leak or spray erratically. Symptoms of a failing injector include rough idling, reduced engine power, increased fuel consumption, and black smoke from the exhaust.

Fuel Injector – Part No 254-4340 – 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
MaterialSteel alloy, NBR seals
ApplicationFuel injection system
Service LifeReplace every 3,000-5,000 hrs or as needed
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A failing fuel injector may initially cause a slight roughness in engine operation or a noticeable increase in exhaust smoke. If ignored, the injector can lead to uneven cylinder firing, significant power loss, and increased fuel waste. Continued operation risks severe engine damage due to improper combustion and potential component overheating.

Installation Tip

Ensure the injector bore is perfectly clean and free of any carbon deposits or debris before seating the new injector. Avoid reusing old seals or copper washers, as this can lead to fuel leaks or poor sealing.

Service Note

Inspect the fuel filter, fuel lines, and engine control module for any related issues when replacing a fuel injector.