CATEngine Parts

10r-7221 Fuel Injector — Cat

This fuel injector is designed to precisely meter and spray diesel fuel into the combustion chamber of a Caterpillar C9 engine, ensuring efficient power generation. Manufactured to meet stringent Caterpillar quality benchmarks, it guarantees accurate fuel delivery and atomization, unlike a worn injector that might leak or provide an improper spray pattern. Operators may notice rough engine operation, increased exhaust emissions, or a noticeable drop in engine performance when this injector begins to fail.

Fuel Injector – Part No 10r-7221 – 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 alloy
ApplicationFuel injection system
Service LifeReplace as a set every 100,000-150,000 miles
CompatibilityCAT C9 Engine
ConditionNew — OEM specification aftermarket

Failure Symptoms

A failing fuel injector on a C9 engine may initially cause uneven running, such as rough idling or hesitation during acceleration. If left unaddressed, this can lead to reduced engine power, increased fuel consumption, and excessive smoke from the exhaust. Continued operation with a faulty injector risks uneven cylinder wear and potential damage to other engine components.

Installation Tip

Ensure the injector seat in the cylinder head is perfectly clean and free of any carbon deposits before installing the new injector. Avoid rotating the injector during installation, as this can damage the sealing surfaces.

Service Note

Inspect the fuel filter, fuel lines, and the engine's electronic control unit (ECU) for any related fault codes or issues.