Urea Nozzle
Форсунка мочевины
Inyector de urea
The 612640130089 OEM Urea Nozzle is a precision-engineered dosing injector manufactured exclusively for the Shacman X5000 heavy-duty truck platform. This critical component atomizes the pressurized Diesel Exhaust Fluid into an ultra-fine mist and injects it directly into the hot exhaust gas stream upstream of the SCR catalyst, ensuring optimal mixing and even distribution of the urea solution across the catalyst face for maximum nitrogen oxide conversion efficiency under all engine load and speed conditions.
Constructed with a high-precision solenoid-actuated or piezoelectric valve mechanism, a hardened stainless steel nozzle body, and a precisely machined orifice plate, the urea nozzle delivers exceptional spray pattern consistency, rapid response to dosing commands, and long-term durability under the extreme thermal cycling and chemically aggressive environment of the exhaust aftertreatment system. The 612640130089 part features an integrated thermal isolation flange that protects the solenoid from exhaust heat and prevents the DEF from boiling inside the nozzle during hot shutdown conditions.
Installing a genuine OEM urea nozzle preserves the designed DEF spray characteristics and prevents the dosing inaccuracy that can cause poor NOx conversion, ammonia slip, and SCR system fault codes leading to engine derate. The 612640130089 identifier provides complete traceability to Shacman’s rigorous material specifications and precision manufacturing quality assurance standards for this emissions-critical dosing component.
| Parameter | Specification | Details |
|---|---|---|
| OEM Part Number | 612640130089 | Unique Shacman X5000 identifier |
| Product Name | Urea Nozzle | SCR system DEF dosing injector |
| Brand / Vehicle Model | Shacman X5000 | Heavy-duty truck series |
| Actuation Type | Solenoid or piezoelectric valve | Fast response and precise metering |
| Nozzle Body Material | Hardened stainless steel | Corrosion resistant and thermally durable |
| Spray Pattern | Ultra-fine atomized mist | Optimal mixing with exhaust gas flow |
| Thermal Protection | Integrated thermal isolation flange | Prevents DEF boiling during hot shutdown |
| Voltage | 24V DC | Standard heavy-duty truck electrical system |
| Application | SCR system exhaust dosing point | Injects atomized DEF upstream of SCR catalyst |
| Packaging | Protective sealed packaging | Shacman genuine labeled packaging |
The nozzle shears the pressurized DEF into microscopic droplets, creating a fine mist that evaporates rapidly in the hot exhaust stream and mixes thoroughly with the exhaust gases for uniform ammonia distribution across the SCR catalyst face.
The 612640130089 nozzle’s fast-acting solenoid opens and closes in milliseconds, enabling the precise, multi-pulse dosing strategies required to match DEF delivery to the engine’s rapidly changing NOx output across transient load conditions.
The thermal isolation flange and precise shut-off valve prevent DEF from weeping or boiling at the nozzle tip during hot engine shutdown, avoiding the crystalline deposit buildup that clogs the orifice and degrades the spray pattern over time.
The urea nozzle 612640130089 is installed in a dedicated mounting boss on the exhaust pipe, positioned upstream of the SCR catalyst at the precise location and angle specified by Shacman engineering to achieve optimal DEF spray distribution. Before installation, the mounting boss threads and sealing surface must be clean and free of any crystallized DEF deposits or corrosion. A new sealing gasket or O-ring is positioned on the nozzle, and the nozzle is threaded into the boss by hand to avoid cross-threading. The nozzle is then torqued to the exact factory specification. The DEF supply line is connected to the nozzle inlet, and the quick-connect fitting is verified to be fully engaged and locked. The electrical connector for the solenoid is engaged and locked. After installation, the SCR system must be primed to purge air from the lines, and the dosing function should be verified using a diagnostic scan tool to confirm correct spray pattern and DEF delivery rate before the vehicle is returned to service.
Each urea nozzle produced under OEM number 612640130089 is assembled from precision-manufactured components in a clean-room environment. The nozzle body is machined from hardened stainless steel to achieve the exact internal flow passages, orifice diameter, and sealing surfaces specified by Shacman engineering. The solenoid coil is wound with high-temperature rated wire and the plunger and spring are manufactured to precise tolerances that determine the nozzle’s opening and closing response time. The orifice plate is precision-laser-drilled to create the specific hole pattern that produces the designed spray angle and droplet size distribution.
After assembly, each nozzle undergoes a comprehensive functional test on a dedicated test stand. This testing verifies flow rate at specified pressure, spray pattern uniformity, solenoid response time, and internal leakage rate. The nozzle is visually inspected for any surface defects or contamination. It is then sealed in protective packaging with all ports capped to prevent contamination, and labeled with the 612640130089 part number for complete traceability throughout the supply chain.
The urea nozzle should be inspected if the vehicle displays SCR-related diagnostic trouble codes, particularly those indicating dosing quantity errors or NOx conversion efficiency below the threshold. White crystalline deposits around the nozzle tip or on the surrounding exhaust pipe indicate a leaking or weeping nozzle that must be replaced. A diagnostic scan tool can be used to command a dosing test and monitor the system pressure response to help determine if the nozzle is functioning correctly.
If the urea nozzle is diagnosed as clogged, leaking, or electrically faulty, it must be replaced with a new 612640130089 component. Attempting to clean a clogged nozzle with mechanical tools can damage the precision orifice and permanently degrade the spray pattern. When replacing the nozzle, the DEF supply line should be inspected for any contamination, and the DEF filter should be replaced if it is due for service. After nozzle replacement, the SCR system must be primed and the dosing function verified before the vehicle is returned to service. A malfunctioning urea nozzle that delivers an incorrect spray pattern can cause uneven ammonia distribution across the SCR catalyst, leading to poor NOx conversion and potential catalyst damage.
Procuring the authentic urea nozzle for your Shacman X5000 SCR system repair is a critical decision that impacts emissions compliance and engine performance. Use the inquiry button above to verify current stock availability and request a competitive quotation. We maintain strategic inventory of these precision dosing components to support both individual vehicle repairs and comprehensive fleet maintenance programs across all international regions.
To ensure you receive the exact factory-specified urea nozzle with correct spray pattern, flow rate, and electrical characteristics for your application, always reference the OEM part number 612640130089 in your purchase order. Our logistics team provides complete export documentation and test certification with every international shipment for emissions compliance verification.
Emissions-Critical Stock Available
Immediate dispatch for Shacman X5000 SCR dosing system service worldwide.
Choosing the genuine Urea Nozzle 612640130089 is a decision that directly impacts the SCR system efficiency and emissions compliance of your Shacman X5000 vehicle. Aftermarket nozzles with imprecise orifice geometry, incorrect spray angles, or inferior solenoid performance can deliver a poorly atomized DEF spray that does not mix adequately with the exhaust gases. This leads to uneven ammonia distribution on the SCR catalyst, causing areas of under-dosing that result in poor NOx conversion, and areas of over-dosing that cause ammonia slip and catalyst fouling. Both conditions trigger fault codes and engine derate.
The OEM nozzle’s specific orifice design, spray angle, droplet size distribution, and solenoid characteristics were validated through extensive flow bench testing, engine dynamometer testing, and vehicle durability evaluation. Shacman engineers specified this exact nozzle design to provide the DEF atomization and distribution that the X5000’s SCR catalyst requires to achieve its certified NOx conversion efficiency. The 612640130089 nozzle delivers the precise dosing performance that keeps the aftertreatment system functioning correctly and the engine operating at full rated power.
Professional fleet technicians and maintenance managers worldwide standardize on the 612640130089 urea nozzle for its guaranteed spray quality, precise metering, and proven durability in the field. This precision atomizing injector is the final metering point that determines how efficiently the SCR system converts harmful NOx emissions. Trust only the urea nozzle that Shacman engineered and certified for the demanding X5000 heavy truck platform.
The urea nozzle 612640130089 operates in an extremely hostile environment, mounted directly into the exhaust pipe where it is exposed to exhaust gas temperatures that can exceed 600 degrees Celsius. The thermal isolation flange and internal design features are specifically engineered to create a temperature gradient that keeps the solenoid and DEF supply at a safe operating temperature while the nozzle tip withstands the full exhaust heat. This thermal management is critical for preventing the DEF from boiling inside the nozzle body during hot engine shutdown, which would leave behind crystalline deposits that clog the precision orifice.
Using only high-quality DEF that meets ISO 22241 specifications is essential for maximizing urea nozzle life. Contaminated or off-specification DEF can contain dissolved minerals or organic compounds that leave deposits on the nozzle orifice and internal passages, gradually degrading the spray pattern and reducing the flow rate. The DEF tank and delivery system should be kept clean and free of debris, and the DEF filter should be replaced at the specified service intervals to protect the precision nozzle from contamination.
For our international customers, we take exceptional care in packaging the 612640130089 urea nozzle to prevent any contamination, orifice damage, or solenoid degradation during global transit and extended storage. Each nozzle is individually sealed in a protective VCI bag with all ports capped, and it is packed in a custom foam-lined, reinforced carton. Partner with our global supply network for a reliable source of genuine Shacman SCR system components, and keep your fleet’s aftertreatment systems dosing precisely and operating efficiently for full emissions compliance across every kilometer.
