CATEngine Parts

119-3061 Fuel Injector Sleeve — Cat 3114 3116

This fuel injector sleeve, also known as an injector cup or seat, provides a sealed mounting point for the fuel injector within the cylinder head, ensuring precise fuel delivery into the combustion chamber. Manufactured to exact OEM tolerances, it prevents fuel leaks and maintains proper injector alignment, unlike a corroded or damaged sleeve which can cause poor sealing and injector misfire. Observable symptoms of a failed injector sleeve include hard starting, rough idling, loss of engine power, and potentially coolant entering the fuel system.

Fuel Injector Sleeve – Part No 119-3061 – 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 Sleeve
MaterialHardened steel alloy
ApplicationFuel injection system
Service LifeReplace on failure or during major engine overhaul
CompatibilityCAT 3114, 3116, 3126 engines, M3 excavators
ConditionNew — OEM specification aftermarket

Failure Symptoms

A leaking fuel injector sleeve may initially cause hard starting or rough idling, especially when the engine is cold. If left unaddressed, fuel or combustion gases can leak into the cooling system, leading to overheating and potential engine damage.

Installation Tip

Ensure the injector bore in the cylinder head is perfectly clean and free of any debris or old sealant before attempting to install the new sleeve. Never attempt to drive the sleeve in without using the proper installation and removal tools, as this can damage the cylinder head.

Service Note

Inspect the fuel injectors for any signs of damage or wear when replacing the injector sleeves.