CATEngine Parts

0r-3591 6 Pcs Fuel Injector — Cat 3306

This is a set of six high-quality fuel injectors designed to deliver precise fuel atomization into the combustion chambers of Caterpillar 3306 series engines. Manufactured to exacting standards, these injectors ensure optimal fuel efficiency and power output, outperforming worn injectors that cause poor spray patterns. Operators may experience rough idling, black smoke from the exhaust, and a noticeable loss of engine power when fuel injectors begin to fail.

6 Pcs Fuel Injector – Part No 0r-3591 – 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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Parts Trading Company  ·  Mumbai, Est. 1956  ·  Same-day dispatch  ·  Ships worldwide  ·  GST invoice included

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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
ApplicationFuel Injection System
Service LifeReplace as needed based on performance
CompatibilityCAT 3306, 3306B, 3306C
ConditionNew — OEM specification aftermarket

Failure Symptoms

Failing fuel injectors can initially cause uneven engine running, such as rough idling or misfires, and increased exhaust smoke. If left unaddressed, fuel delivery will become inconsistent, leading to significant power loss and potential engine overheating. Continued operation with faulty injectors risks internal engine damage due to poor combustion and fuel dilution of oil.

Installation Tip

Ensure the injector bore in the cylinder head is perfectly clean and free of any carbon deposits before installing new injectors. Never lubricate the injector body or nozzle tip with engine oil; use only the specified assembly lubricant if required.

Service Note

When replacing fuel injectors, it is advisable to inspect the fuel filter and fuel lines for any contamination or blockages.