CATHydraulic Parts

2027475 Lifter As-Unit Injector — Cat 140H 143H

This is a unit injector, a critical component within the engine's fuel system responsible for precisely metering and injecting fuel directly into the combustion chamber. Manufactured to strict tolerances, it ensures optimal fuel atomization and timing, unlike a worn injector that may cause poor spray patterns or incorrect delivery. Engine misfires, a noticeable loss of power, increased exhaust smoke, and rough idling are common symptoms of a failing unit injector.

Lifter As-Unit Injector – Part No 2027475 – CAT Spare Part
Part Specifications
BrandCAT
CategoryHydraulic 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

Flush hydraulic lines before fitting new components. Use only manufacturer-specified hydraulic fluid. Check O-rings and backup rings for correct orientation. Bleed air from system after installation.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Part TypeUnit Injector Assembly
MaterialSteel Alloy
ApplicationEngine Fuel Injection System
Service LifeReplace based on engine performance diagnostics
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A noticeable decrease in engine power and increased fuel consumption are early indicators of injector issues. As the problem progresses, the engine may begin to misfire, run rough, and produce excessive exhaust smoke. Continued operation with faulty injectors can lead to increased internal engine wear and potential damage to other fuel system components.

Installation Tip

Ensure the injector bore in the cylinder head is meticulously clean before installation to prevent leaks and ensure proper sealing. Avoid rotating the injector during installation, as this can damage the sealing surfaces.

Service Note

Inspect the fuel lines, seals, and the engine's camshaft for wear when replacing unit injectors.