def doser injector / urea injector
DEF / AdBlue Injectors
OE-number matched DEF and AdBlue doser injectors with application, connector, sample-photo, and packing support.
Open category
SCR dosing and DEF injector sourcing solutions
DEF Injector & SCR Dosing Solutions for Diesel Aftertreatment Buyers
WEUP is not only a DEF / AdBlue injector supplier. We help distributors, repair networks, fleets, and private-label buyers source the right SCR dosing parts through OE matching, product range planning, quality checks, and export-ready packing.
OE/OEM number matching
SCR dosing range planning
Quality and packing workflow
Solution framework
From part number to sourcing plan, not just a product list.
A buyer may need one DEF injector today, but the real work is matching the part, confirming the application, arranging a reliable supply path, and preparing the right packing or resale program.
OE Matching Solution
Turn OE/OEM numbers, sample photos, connector views, and vehicle data into a clearer sourcing direction.
Product Range Planning
Combine injectors, dosing modules, urea pumps, valves, nozzles, and SCR parts around buyer demand.
Quality & Packing Workflow
Support each quote with flow, spray, sealing, connector, traceability, export packing, and label checks.
Buyer-Specific RFQ Path
Separate distributor, repair network, fleet, and OEM / ODM needs so the quote asks the right questions.
Product silo
Product categories support the solution, not the other way around.
Each product page is a buying path for OE matching, application confirmation, related-part bundling, quality workflow, and RFQ preparation.
dosing unit / metering module
SCR Dosing Modules
Module and metering-unit sourcing as part of a complete SCR dosing repair or distribution program.
Open category
AdBlue dosing pump / DEF pump assembly
Urea Pumps
Pump assemblies, fluid delivery parts, and related injector/module matching for one RFQ package.
Open category
DEF dosing valve / AdBlue dosing valve
Doser Valves & SCR Parts
Doser valves and fluid-control parts selected around the buyer's vehicle, fault, and replacement plan.
Open category
SCR urea spray nozzle
DEF Injector Nozzles
Nozzle-focused support for spray, atomization, clogging, crystallization, and replacement inquiries.
Open category
NOx sensor / connector / SCR service parts
NOx Sensors & SCR Parts
Related SCR service parts grouped with injector, pump, and module sourcing to reduce buyer search work.
Open categoryMatch by engine brand, OE number, and real part evidence.
Brand pages help buyers start from familiar search paths, while the RFQ process still confirms OE number, connector, application, and sample photos before quotation.
Cummins DEF Injectors
2888173 / 2888112 and related doser references
Paccar DEF Injectors
Paccar doser injector sourcing path
Volvo / Mack DEF Injectors
Includes 22391563-style cross-reference planning
Bosch DEF Injectors
0444043017 / 0444043107 and Bosch-style references
Detroit DEF Injectors
DD13 / DD15 sourcing and OE matching path
DAF / MAN Urea Injectors
European truck and engine search cluster
Applications
Application pages turn search intent into the right sourcing route.
Heavy-duty trucks, vans, passenger cars, and off-highway equipment often need different voltage, connector, packing, and stock-planning discussions.
Heavy-Duty Trucks
Commercial diesel truck repair and aftermarket replacement sourcing.
Buses & Coaches
City bus, coach, shuttle, and public-transport SCR dosing replacement sourcing.
Vans & Pickups
Light commercial diesel vehicles, Sprinter-style vans, and pickup SCR systems.
Passenger Cars
AdBlue injector route for Mercedes, BMW, Audi, VW, Skoda, Seat, and similar diesel cars.
Off-Highway Equipment
Construction, agricultural, and industrial diesel equipment service channels.
Buyer solutions
Different buyers need different sourcing support.
The site separates distributor range building, repair replacement matching, fleet maintenance supply, and OEM / ODM private-label programs instead of using one generic sales message.
Aftermarket Distributors
Build a sellable SCR dosing range with OE cross-reference, category planning, packing, and batch quotation support.
Repair Networks
Match replacement parts from OE number, sample photo, connector view, vehicle data, and repair workflow.
Fleet Maintenance Buyers
Organize repeat sourcing for vehicle groups, maintenance schedules, and frequently replaced SCR dosing parts.
OEM / ODM & Private Label
Prepare private-label packing, carton labels, catalog structure, and product selection for resale programs.
Quality and trust
Quality workflow is part of the solution promise.
For overseas buyers, the quote is not complete until matching, inspection, packing, labels, and shipment expectations are clear.
Flow consistency
Spray atomization
Sealing inspection
Connector fitment
Electrical checks
Batch traceability
Process proof before strong claims
Flow, spray, sealing, connector fitment, packing, and traceability information should be tied to real product evidence before strong claims are published.
Resources
Resources educate buyers before they send an RFQ.
Guides can explain symptoms, cleaning, replacement, OE lookup, SCR system structure, and sourcing from China, then lead buyers back to the closest product or solution page.
What is a DEF injector and how does it work
Planned blog article linking to /def-injectors and related category pages.
AdBlue vs DEF injector: what's the difference
Planned blog article linking to /def-injectors and related category pages.
How an SCR dosing system works
Planned blog article linking to /def-injectors and related category pages.
DEF injector vs dosing module vs urea pump
Planned blog article linking to /def-injectors and related category pages.
What is a urea doser valve or nozzle
Planned blog article linking to /def-injectors and related category pages.
Symptoms of a failing or clogged DEF injector
Planned blog article linking to /def-injectors and related category pages.
How to clean a DEF injector
Planned blog article linking to /def-injectors and related category pages.
How to replace a DEF doser injector
Planned blog article linking to /def-injectors and related category pages.
DEF injector crystallization explained
Planned blog article linking to /def-injectors and related category pages.
SCR / DEF fault codes and what they mean
Planned blog article linking to /def-injectors and related category pages.
DEF injector cost and replacement guide
Planned blog article linking to /def-injectors and related category pages.
How to source DEF injectors from China
Planned blog article linking to /def-injectors and related category pages.
OEM vs aftermarket DEF injectors
Planned blog article linking to /def-injectors and related category pages.
How to start a private-label SCR parts line
Planned blog article linking to /def-injectors and related category pages.
How to vet a DEF injector manufacturer
Planned blog article linking to /def-injectors and related category pages.
MOQ, lead time and export packing for SCR parts
Planned blog article linking to /def-injectors and related category pages.
Cummins DEF injector replacement guide 2888173
Planned blog article linking to /def-injectors and related category pages.
Mercedes Sprinter AdBlue injector replacement
Planned blog article linking to /def-injectors and related category pages.
Ford 6.7 PowerStroke DEF injector guide
Planned blog article linking to /def-injectors and related category pages.
Bosch DEF doser injectors 0444043017 explained
Planned blog article linking to /def-injectors and related category pages.
Volvo / Mack DEF injector cross-reference
Planned blog article linking to /def-injectors and related category pages.
Euro 5 vs Euro 6 SCR / AdBlue systems
Planned blog article linking to /def-injectors and related category pages.
DEF injector cross-reference / OE lookup guide
Planned blog article linking to /def-injectors and related category pages.
What is DEF diesel exhaust fluid
Planned blog article linking to /def-injectors and related category pages.
How DEF injectors reduce NOx emissions
Planned blog article linking to /def-injectors and related category pages.
DEF system maintenance and prevention
Planned blog article linking to /def-injectors and related category pages.
How to RFQ: send OE number, sample photo, application, and quantity.
Buyers usually search by real part data, not internal model names. The RFQ form turns product needs into a practical matching and sourcing conversation.
OE/OEM number
Sample photo
Vehicle / engine
Connector shape
Country / market
Buyer type
Estimated quantity
Packing needs