VolvoEngine Parts

85003864 — Def Urea Pump 85002754 85003864 85003865 0444042250 For Mack Mp8 Volvo D13 Engine Fh13 Fh4 Vnl Truck

This DEF urea pump is a key component of the Selective Catalytic Reduction (SCR) system, responsible for injecting Diesel Exhaust Fluid (DEF) into the exhaust stream to reduce NOx emissions. It precisely meters and pressurizes the DEF for optimal catalyst performance. A malfunctioning pump can lead to increased emissions, engine derating, and illuminated warning lights on the dashboard, potentially causing the vehicle to be non-operational.

Def Urea Pump 85002754 85003864 85003865 0444042250 For Mack Mp8 Volvo D13 Engine Fh13 Fh4 Vnl Truck – Part No 85003864 – 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 Urea Pump
MaterialComposite and metal
ApplicationDiesel Exhaust Fluid (DEF) injection system
Service LifeReplace as indicated by diagnostic codes or performance issues
CompatibilityMack/Volvo specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Illuminated check engine or DEF warning lights, along with reduced engine power (derating), are typical symptoms of a failing DEF pump. If the issue persists, the vehicle may enter a reduced speed mode or become inoperable, preventing further use until repaired. Emissions test failures can also result from a faulty pump.

Installation Tip

Ensure the DEF tank and lines are clean before installing the new pump to prevent contamination. Bleed the system according to the manufacturer's procedure after installation.

Service Note

When replacing the DEF pump, it is essential to inspect the DEF filter, lines, and injector for any signs of blockage or contamination.