CATEngine Parts

177-4754 Fuel Injector — Cat 3126B 3126E

This is a fuel injector designed to precisely meter and atomize diesel fuel into the combustion chamber of Caterpillar engines. It is manufactured to meet stringent OEM quality standards, ensuring optimal fuel delivery for efficient combustion and power, unlike a clogged or leaking injector. Operators may experience rough idling, reduced engine power, increased exhaust smoke, or poor fuel economy when this component begins to fail.

Fuel Injector – Part No 177-4754 – 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 and brass
ApplicationEngine fuel injection system
Service LifeReplace every 3,000 hrs or as needed
CompatibilityCAT 3126B, 3126E, 322C, 325C M3
ConditionNew — OEM specification aftermarket

Failure Symptoms

A failing fuel injector may first present as a rough or uneven engine idle, or a noticeable loss of engine power. If left unaddressed, the issue can lead to increased fuel consumption and excessive exhaust smoke, potentially causing damage to the exhaust system or aftertreatment components. Continued operation with faulty injectors risks incomplete combustion and reduced engine efficiency.

Installation Tip

Ensure the injector seat in the cylinder head is perfectly clean and free of carbon deposits before installing the new injector. Avoid applying excessive force when tightening the injector hold-down clamp.

Service Note

Inspect the fuel filter and fuel lines for contamination or damage when replacing a fuel injector.