Urea Pump E5700-1205340 for Yuchai
Applicable models:Yuchai
Reference part number:E5700-1205340，E57001205340，WLDSB4010，WLDSB4010
| Rated output : | |
| Pulley : | |
| Size : | |
| Weight : | Net weight 3.9 |
| Packaging : | Neutral kraft paper packaging |
| Spot/Pre sale : | presale |
| Warranty : | 1 year |
| Product number : |
| Type : | urea pump |
| Specification : | |
| Pulley : | |
| Brand : | nuojin |
| Number : | E5700-1205340 |
| Quality : | renovate |
| Delivery time : | 30DAYS |
About the E5700-1205340 Urea Pump
The E5700-1205340 urea pump is the dosing module of the SCR system. It draws diesel exhaust fluid from the tank, pressurises it and delivers a measured quantity to the dosing injector ahead of the catalyst.
Every unit is checked before packing. Mounting points, connectors and fluid or air paths are verified against the original.
Specification Summary
- Integrated pump, pressure sensor and control electronics
- Sealed fluid path for diesel exhaust fluid
- Filter included in the suction path
- Direct replacement for the original module
Reference Numbers and Cross References
Match the unit by any of these numbers:
- E5700-1205340
- E57001205340
- WLDSB4010
Application Notes
The module is used on Yuchai applications. Match the part number and the connector layout; dosing modules are not interchangeable between engine families.
Fitment follows the assembly, not the badge. Two vehicles of the same model year can use different units.
Failure Modes
Fluid quality decides life. Contaminated or diluted AdBlue crystallises in the pump and blocks the filter, and the pump then runs dry against a rising pressure error.
Pressure faults follow: the module cannot hold the commanded pressure, the ECM logs a dosing fault and the engine derates. Sensor drift inside the module produces the same symptoms.
Fault Symptoms
- NOx efficiency or dosing fault code stored
- Engine derate or torque limitation
- White crystal deposits around the dosing injector
- Rough running after cold start
- Diesel exhaust fluid consumption higher or lower than normal
Checking Before Replacement
Check fluid quality and the tank filter. Contaminated AdBlue will destroy a new module in a short time.
Confirm the fault is inside the unit and not in the circuit around it.
Installation Notes
Flush the lines, fit a new filter and clean the tank neck before fitting the module. Prime the system with the diagnostic routine, clear the codes and run a dosing test. Keep the fluid path clean: any grit that enters will end up in the pump.
Related Parts to Check at the Same Time
- Urea filter
- Dosing injector
- NOx sensor
- Urea tank and lines
Quality Control and Supply
Hejian Nuojin Auto Parts Co., Ltd. checks function, dimensions and interfaces on each batch, then packs in neutral cartons. Each unit carries a one-year warranty against manufacturing defects.
Frequently Asked Questions
How do I confirm this is the right unit?
Read the number from the old part and compare the key interfaces: connectors, brackets, pulley or pipework.
Can it be fitted without special tools?
Standard hand tools cover most of the job. Refrigerant work needs recovery and charging equipment, and urea systems need a diagnostic routine to prime.
What else should be replaced at the same time?
Everything that touches the new unit: filter and lines for a urea pump, clutch and seals for a gearbox, drier and expansion valve for a compressor.
Why did the original fail?
Contamination, heat and wear account for most failures. Clean installation and correct consumables prevent a repeat.
