VolvoEngine Parts

2888173 — Def Urea Dosing Valve Injector Doser 2888173 For Cummins Isb Isc Isl Isx L9 Engine Volvo Kenworth International Freightliner Cascadia Truck

This urea dosing valve injector is a critical component of the selective catalytic reduction (SCR) system, responsible for precisely injecting diesel exhaust fluid (DEF) into the exhaust stream. It ensures proper conversion of harmful NOx emissions into harmless nitrogen and water, meeting stringent environmental regulations. A worn or failed injector may lead to increased exhaust emissions, a visible check engine light, and potentially reduced engine performance or limp-home mode.

Def Urea Dosing Valve Injector Doser 2888173 For Cummins Isb Isc Isl Isx L9 Engine Volvo Kenworth International Freightliner Cascadia Truck – Part No 2888173 – Volvo Spare Part
Part Specifications
BrandVolvo
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 TypeDEF Dosing Valve Injector
MaterialSteel alloy and high-temperature polymer
ApplicationSelective Catalytic Reduction (SCR) system
Service LifeReplace as needed based on diagnostic codes or performance issues
CompatibilityCummins ISB, ISC, ISL, ISX, L9; Volvo
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first sign of a failing DEF dosing valve is often an illuminated check engine or SCR warning light on the dashboard. If ignored, the system may begin to inject incorrect amounts of DEF, leading to increased exhaust emissions and potential engine power reduction. Eventually, the vehicle may enter a restricted operating mode or refuse to restart after shutdown.

Installation Tip

Before installing, ensure the DEF lines are thoroughly flushed to remove any debris that could clog the new injector. Avoid overtightening the injector during installation, as this can damage the threads or the injector body.

Service Note

Inspect the DEF lines for leaks or blockages and check the DEF fluid quality when replacing the dosing valve.