CATEngine Parts

121-3101 4Pcs Fuel Injector — Cat 3054 315

This set of four fuel injectors is essential for the precise delivery of fuel into the engine's combustion chambers, ensuring efficient power generation and emissions control. Manufactured to strict quality standards, these injectors offer reliable performance and optimal spray patterns compared to worn originals. Operators may notice rough idling, reduced engine power, or increased exhaust smoke when these injectors begin to fail.

4Pcs Fuel Injector – Part No 121-3101 – 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 Set (4 pcs)
MaterialSteel and brass
ApplicationEngine fuel system
Service LifeReplace every 3,000 hours or as needed
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Early signs of injector failure include a noticeable increase in engine vibration or a slight hesitation during acceleration. If ignored, the engine may start to misfire, leading to significant power loss and increased black smoke from the exhaust. Continued operation with faulty injectors can cause engine damage and poor fuel economy.

Installation Tip

Ensure the injector seats in the cylinder head are perfectly clean and free from carbon buildup before installation. Avoid overtightening the injector hold-down clamps, as this can damage the injector body or the cylinder head.

Service Note

When replacing fuel injectors, always inspect the fuel lines for leaks and replace the fuel filter and water separator.