CATFuel System

9N3299 Nozzle Assem — Cat 613B Engine: 3208

This nozzle assembly is a vital part of the fuel injection system, responsible for atomizing and delivering fuel into the combustion chamber at high pressure. Manufactured to precise specifications, it ensures optimal fuel spray patterns and combustion efficiency, unlike a worn nozzle that may produce poor atomization or incorrect spray angles. Operators may notice rough engine operation, black smoke, or a loss of power when this assembly begins to fail.

Nozzle Assem – Part No 9N3299 – 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 Injection Nozzle Assembly
MaterialHardened Steel Alloy
ApplicationFuel Injection System
Service LifeReplace based on performance diagnostics
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Early indications of a failing nozzle assembly include uneven engine running, a noticeable drop in fuel economy, and increased exhaust emissions. If ignored, poor atomization will lead to incomplete combustion, carbon buildup on engine components, and potential cylinder damage. Continued operation with faulty nozzles can result in significant engine performance degradation and increased repair costs.

Installation Tip

Ensure the nozzle seat in the cylinder head is perfectly clean and free of carbon deposits before installing the new assembly. Avoid overtightening the nozzle retaining nut, as this can distort the nozzle body.

Service Note

Replace all nozzle assemblies in the affected cylinder bank at the same time to ensure balanced fuel delivery and engine performance.