CATEngine Parts

111-3769 Fuel Injection Pump — Cat 3306

This is a high-pressure fuel injection pump, a critical component of the engine's fuel system that precisely meters and delivers diesel fuel to the combustion chambers. It ensures optimal fuel atomization and timing, differing from a worn pump by maintaining consistent pressure and flow rates. Operators may notice rough idling, a significant loss of engine power, or difficulty starting the engine when this part fails.

Fuel Injection Pump – Part No 111-3769 – 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 Injection Pump
MaterialHardened steel alloy
ApplicationEngine fuel injection system
Service LifeReplace based on performance degradation or 5,000-10,000 hours
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Initial signs of a failing fuel injection pump include a noticeable decrease in engine power and rougher idling. If left unaddressed, the engine may begin to stall under load or become increasingly difficult to start. Continued operation with a faulty pump risks uneven cylinder firing and potential internal engine damage.

Installation Tip

Ensure the engine is completely cool before beginning any work on the fuel system. Avoid overtightening fuel line connections, as this can strip threads or damage fittings.

Service Note

Always replace the fuel filter(s) when replacing the fuel injection pump to prevent contamination of the new component.