CATEngine Parts

371-3974 6 Pcs Fuel Injector — Cat 320D

This set of six fuel injectors is a critical component of the engine's fuel system, precisely delivering fuel into the combustion chambers for efficient power generation. Manufactured to exact specifications, these injectors ensure optimal spray patterns and fuel atomization, outperforming worn or clogged injectors. Operators may experience rough engine idling, reduced power, increased fuel consumption, or black smoke from the exhaust when these injectors begin to fail.

6 Pcs Fuel Injector – Part No 371-3974 – 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 (6 pcs)
MaterialSteel alloy and precision nozzles
ApplicationEngine fuel injection system
Service LifeReplace based on engine performance and diagnostic codes
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Initial symptoms of failing injectors include uneven engine running, a noticeable loss of power, or increased exhaust emissions. If left unaddressed, poor fuel atomization and delivery will lead to reduced fuel efficiency and potential engine misfires. Continued operation with faulty injectors can cause excessive heat in the combustion chamber, potentially damaging pistons and cylinder heads.

Installation Tip

Ensure the fuel system is properly bled of air after installation to prevent starting issues. Avoid overtightening the injector hold-down clamps, as this can distort the injector body or cylinder head.

Service Note

Replace the fuel filter and inspect the fuel lines and seals for leaks when installing new fuel injectors.