VolvoHydraulic Parts

21577507 — Diesel Exhaust Fluid (Def) Pump 21577511 21577507 For Volvo Truck Mack

This is a Diesel Exhaust Fluid (DEF) pump, a critical component of the selective catalytic reduction (SCR) system responsible for reducing harmful emissions in Volvo and Mack vehicles. It is engineered to meet precise flow and pressure requirements, ensuring accurate DEF injection into the exhaust stream, unlike a failing pump that can lead to incorrect dosing or no dosing at all. Operators will typically observe a check engine light, a DEF system warning message, or increased exhaust emissions if this pump malfunctions.

Diesel Exhaust Fluid (Def) Pump 21577511 21577507 For Volvo Truck Mack – Part No 21577507 – Volvo Spare Part
Part Specifications
BrandVolvo
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.

WhatsApp for Price & Availability☎ Call Mumbai Office

Parts Trading Company  ·  Mumbai, Est. 1956  ·  Same-day dispatch  ·  Ships worldwide  ·  GST invoice included

const P = { partNo:'21577507', name:'Diesel Exhaust Fluid (Def) Pump 21577511 21577507 For Volvo Truck Mack', brand:'Volvo', brandSlug:'volvo', category:'Hydraulic Parts', catSlug:'hydraulic-parts', condition:'OEM Aftermarket', description:'This is a Diesel Exhaust Fluid (DEF) pump, a critical component of the selective catalytic reduction (SCR) system responsible for reducing harmful emissions in Volvo and Mack vehicles. It is engineered to meet precise flow and pressure requirements, ensuring accurate DEF injection into the exhaust stream, unlike a failing pump that can lead to incorrect dosing or no dosing at all. Operators will typically observe a check engine light, a DEF system warning message, or increased exhaust emissions if this pump malfunctions.', xref:['21577507'], models:["Volvo Truck"], specs:[{key:'Part No',val:'21577507'},{key:'Brand',val:'Volvo'},{key:'Category',val:'Hydraulic Parts'},{key:'Condition',val:'Aftermarket — OEM Specification'},{key:'Dispatch',val:'Same-day from Mumbai (before 3 PM IST)'},{key:'GST Invoice',val:'Available — all orders'},{key:'Export Docs',val:'Commercial invoice, packing list, COO'}], relatedParts:[{"partNo": "FPXQ2406299", "name": "Cylinder Head Gasket 20495935 For Volvo D9 D11 Tad114 Tad115 Truck A25", "slug": "FPXQ2406299"}, {"partNo": "LXFP210723030", "name": "Oil Pump 21769329 For Volvo B5Lh B5Rh Fe Fh Vm", "slug": "LXFP210723030"}, {"partNo": "1610568", "name": "Solenoid Valve Voe1594346 Voe1610568 Voe8143019 For Volvo F10 F12 Fh12", "slug": "1610568"}, {"partNo": "FPLJ2509268", "name": "Hydraulic Valve Voe 15135160 For Volvo Wheel Loader L110F L110G L110H ", "slug": "FPLJ2509268"}, {"partNo": "21356266", "name": "Control Valve 21985798 21356266 For Volvo Truck Fh4 Fm4 Nh16 Fm10 Fm11", "slug": "21356266"}, {"partNo": "FPCY2508001", "name": "Hydraulic Pump Voe14612544 For Volvo Excavator Ew140D", "slug": "FPCY2508001"}], reviews:[{name:'Customer',loc:'UAE',rating:5,text:'Excellent quality part. Fits perfectly.'}], faq:[{q:'What is the role of the DEF pump in the SCR system?',a:'The DEF pump draws fluid from the DEF tank and delivers it under pressure to the injector, where it is sprayed into the exhaust to reduce NOx emissions.'},{q:'How do I know if this pump (21577511) is the correct replacement for my truck?',a:'Verify the part number against your vehicle\'s service information and ensure your truck model is listed for compatibility with this specific DEF pump.'},{q:'What are the benefits of a genuine or OEM-spec DEF pump?',a:'An OEM-specification pump ensures accurate DEF delivery rates and proper system pressure, crucial for effective emissions control and avoiding costly aftertreatment system faults.'},{q:'What can cause a DEF pump to fail?',a:'Contamination of the DEF fluid, freezing and thawing cycles, or electrical issues can lead to premature failure of the DEF pump.'}], categoryDesc:'Volvo Hydraulic Parts from Parts Trading Company cover the full range of Volvo equipment. We supply OEM-specification aftermarket parts sourced from certified manufacturers. Our Mumbai warehouse stocks high-turnover Volvo parts for same-day dispatch before 3 PM IST.', aiSpecs:[{"key": "Part Type", "val": "DEF Pump"}, {"key": "Material", "val": "Corrosion-resistant alloys and plastics"}, {"key": "Application", "val": "Selective Catalytic Reduction (SCR) system"}, {"key": "Service Life", "val": "Replace as needed based on system diagnostics"}, {"key": "Compatibility", "val": "OEM specification (21577511)"}, {"key": "Condition", "val": "New \u2014 OEM specification aftermarket"}],};script src="/assets/js/product-page.js">

Related Volvo Parts

From the same category — may also be needed

FPXQ2406299
Cylinder Head Gasket 20495935 For Volvo D9 D11 Tad114 Tad115 Truck A25
LXFP210723030
Oil Pump 21769329 For Volvo B5Lh B5Rh Fe Fh Vm
1610568
Solenoid Valve Voe1594346 Voe1610568 Voe8143019 For Volvo F10 F12 Fh12
FPLJ2509268
Hydraulic Valve Voe 15135160 For Volvo Wheel Loader L110F L110G L110H
21356266
Control Valve 21985798 21356266 For Volvo Truck Fh4 Fm4 Nh16 Fm10 Fm11
FPCY2508001
Hydraulic Pump Voe14612544 For Volvo Excavator Ew140D

Browse all Volvo Hydraulic Parts →

Ship This Part To Your Location

DubaiSaudi ArabiaNigeriaKenyaSouth AfricaBangladeshMalaysiaGhanaQatarEgypt
India
MaharashtraGujaratTamil NaduRajasthanKarnatakaTelangana

Full shipping information on regional pages · Air freight 2–12 days · GST invoice for India

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 TypeDEF Pump
MaterialCorrosion-resistant alloys and plastics
ApplicationSelective Catalytic Reduction (SCR) system
Service LifeReplace as needed based on system diagnostics
CompatibilityOEM specification (21577511)
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first symptom of a failing DEF pump is often the illumination of the check engine or DEF system warning light. This can progress to the vehicle entering a reduced power mode or even refusing to start if the DEF system fault is not rectified. The ultimate consequence is non-compliance with emissions regulations and potential vehicle downtime.

Installation Tip

Ensure the DEF tank is clean and free of any sediment before installing the new pump to prevent immediate contamination. Properly prime the pump according to the manufacturer's procedure to avoid running it dry.

Service Note

Inspect the DEF tank for contamination and check the DEF lines for any blockages or leaks when replacing the DEF pump.