CATFuel System

214-3879 Fuel Injector Nozzle — Cat 302 303

This fuel injector nozzle is responsible for precisely atomizing diesel fuel into the combustion chamber at extremely high pressure, ensuring efficient and complete burning. Manufactured with tight tolerances and high-quality materials, it delivers a consistent spray pattern superior to worn nozzles that may produce incomplete combustion or dribble fuel. Operators might experience rough engine starting, noticeable smoke from the exhaust (black or white), and a significant loss of engine power if the injector nozzles are faulty.

Fuel Injector Nozzle – Part No 214-3879 – CAT Spare Part
Part Specifications
BrandCAT
CategoryFuel System
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

Use clean, filtered fuel — fuel injection components have micron-level tolerances. Prime fuel system before cranking to avoid dry-start damage. Replace fuel filter whenever servicing injection components. Calibrate injectors after replacement if equipment has ECU.

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 Nozzle
MaterialHardened steel alloy
ApplicationDiesel engine combustion
Service LifeReplace every 3,000 hrs or as needed based on performance
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Initial symptoms of faulty fuel injector nozzles include difficulty starting the engine, especially when cold, and visible exhaust smoke (black indicates incomplete combustion, white suggests unburnt fuel). As the problem progresses, engine power will noticeably decrease, and fuel efficiency will suffer. Continued operation with bad nozzles can lead to increased engine oil dilution and potential damage to pistons and cylinder walls.

Installation Tip

Ensure the injector bore in the cylinder head is perfectly clean and free of carbon deposits before installing the new nozzle. Avoid using excessive force when tightening the injector hold-down clamp, as this can damage the injector body.

Service Note

Clean or replace the fuel filter and inspect the fuel pump when replacing fuel injector nozzles.