VolvoEngine Parts

21644771 — Urea Injector 21318197 21644771 F00Bh40294 For Volvo Engine D11 D13 Truck Fh Fm Vm Fmx Fm4 Fm13 Fh4 Fh13

This urea injector, also known as a Diesel Exhaust Fluid (DEF) injector, is a critical component of the selective catalytic reduction (SCR) system, precisely injecting DEF into the exhaust stream to reduce NOx emissions. It is manufactured to meet stringent OEM performance and durability standards, ensuring accurate DEF atomization and delivery compared to a clogged or leaking injector which can lead to emission control faults. Operators may observe engine derating, illuminated DEF warning lights, or increased exhaust emissions when this injector malfunctions.

Urea Injector 21318197 21644771 F00Bh40294 For Volvo Engine D11 D13 Truck Fh Fm Vm Fmx Fm4 Fm13 Fh4 Fh13 – Part No 21644771 – 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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Parts Trading Company  ·  Mumbai, Est. 1956  ·  Same-day dispatch  ·  Ships worldwide  ·  GST invoice included

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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 TypeUrea Injector (DEF Injector)
MaterialStainless Steel, Brass
ApplicationSelective Catalytic Reduction (SCR) System
Service LifeReplace as needed based on diagnostic codes
CompatibilityVolvo D11, D13 Engines (FH, FM, VM, FMX)
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first sign of a failing urea injector is typically an illuminated DEF warning light or an engine check light, often accompanied by a reduction in engine power (derating). If the issue persists, the SCR system's ability to reduce NOx emissions will be compromised, potentially leading to failed emissions tests or further engine performance restrictions. Continued operation without addressing the fault can result in significant downtime and costly repairs to the aftertreatment system.

Installation Tip

Ensure the DEF supply line and the exhaust port where the injector mounts are completely clean and free of any DEF residue or contamination before installation. Do not apply any lubricants to the injector threads, as this can interfere with proper sealing and function.

Service Note

Inspect the DEF tank level and quality, check the DEF dosing control module for any fault codes, and verify the SCR catalyst is functioning correctly.