VolvoFuel System

23899645 Unit Injector — Volvo FH12 FH16

This is a unit injector, also known as a pump-nozzle, that combines the fuel pump and injector functions into a single component for each cylinder. It is built to meet rigorous OEM quality standards, offering reliable atomization and precise fuel delivery superior to worn injectors that may leak or spray unevenly. Observable symptoms of a failing unit injector include rough engine running, excessive smoke from the exhaust, a significant loss of engine power, and increased fuel consumption.

Unit Injector – Part No 23899645 – Volvo Spare Part
Part Specifications
BrandVolvo
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 TypeUnit Injector (Pump-Nozzle)
MaterialHardened steel and precision seals
ApplicationIndividual cylinder fuel injection
Service LifeReplace as needed based on performance diagnostics
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A failing unit injector may initially manifest as a slight roughness in engine idle or a subtle increase in exhaust smoke. As the condition worsens, the engine will experience a noticeable power loss, misfires, and potentially audible knocking sounds. Continued operation with faulty injectors can lead to unbalanced cylinder loads and potential damage to other engine components.

Installation Tip

Thoroughly clean the injector bore in the cylinder head before installing the new unit injector to prevent damage to seals. Ensure the electrical connector is securely seated to avoid intermittent operation.

Service Note

Inspect the wiring harness and connectors for the unit injector system for any signs of damage or corrosion during replacement.