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Discover the precision-engineered BY612600012685 Nozzle Assembly, the critical component responsible for delivering perfectly atomized fuel into the combustion chamber of SHACMAN heavy-duty diesel engines. This genuine OEM assembly is the final link in the high-pressure fuel injection system, dictating engine power, fuel economy, and emissions control. As a premier supplier of Shacman truck parts, we emphasize that the BY612600012685 is manufactured to microscopic tolerances, providing perfect compatibility and ensuring optimal spray pattern, timing, and fuel dosage.
Its robust construction withstands extreme pressures and temperatures, making it indispensable for performance tuning, emission system compliance, and engine overhauls. Understanding its function is paramount for maintaining peak engine performance, reducing smoke, and ensuring your truck operates with maximum efficiency and power output throughout its demanding service life.
Nozzle Assembly
Форсунка в сборе
Precision-Ground Sacrifice Nozzle Tip: The BY612600012685 features a multi-hole (e.g., 5 or 7 hole) nozzle tip manufactured from high-grade tool steel, laser-drilled and precision-ground to create an exact, consistent fuel spray pattern for optimal air-fuel mixing and combustion.
Calibrated Needle Valve and Spring Assembly: Equipped with a lapped needle valve and a precisely calibrated spring that controls the exact opening pressure (e.g., 220-250 bar), ensuring timely fuel injection start and sharp cut-off to prevent dribbling.
Robust Steel Body with Advanced Coating: Constructed with a hardened steel body featuring wear-resistant coatings on critical surfaces to withstand fuel corrosion, cavitation erosion, and extreme thermal cycling within the cylinder head.
Integrated Sealing and Heat Dissipation Design: Engineered with multiple copper seals and washers that ensure high-pressure integrity while also transferring heat from the nozzle tip to the cylinder head, preventing carbon buildup and overheating.
The table below provides detailed technical specifications for the BY612600012685 Nozzle Assembly. This information is critical for verifying compatibility and ensuring it meets the precise injection requirements of your SHACMAN engine.
| Parameter | Value / Description |
|---|---|
| OEM Part Number | BY612600012685 |
| Product Name | Nozzle Assembly |
| Brand | SHACMAN |
| Injector Type | Mechanical, Sacrifice Nozzle |
| Nozzle Holder Type | Standard or Reduced Dimensions (Application Specific) |
| Opening Pressure | 220 – 250 Bar (3190 – 3625 PSI) |
| Nozzle Hole Configuration | 5 or 7 Holes (Precision Drilled) |
| Spray Cone Angle | 150° – 160° (Engine Specific) |
| Flow Rate at 100 Bar | Approx. 450 – 550 cc/min (Calibrated) |
| Thread Size (for Holder) | M22 x 1.5 or similar |
| Seal Types | Copper Washers, O-rings (High-Temp) |
| Maximum Operating Pressure | Up to 1200 Bar (Peak in common rail systems) |
| Compatible SHACMAN Models | F2000, F3000 series with specific mechanical or early common rail fuel systems (WP10, WP12 engines) |
Always confirm BY612600012685 compatibility with your specific engine model, fuel system type, and calibration code using your Vehicle Identification Number (VIN) or official SHACMAN technical documentation.
The BY612600012685 Nozzle Assembly is installed in the cylinder head of a SHACMAN diesel engine, one per cylinder. It works in conjunction with the fuel injection pump (or common rail) and the injector body to deliver fuel to the combustion chamber.
Its primary function is to atomize high-pressure fuel into a fine, conical mist at the precise moment of injection. This ensures thorough mixing with compressed air in the cylinder, leading to complete and efficient combustion. The BY612600012685’s spray pattern, hole size, and opening pressure are precisely calibrated to optimize power, minimize fuel consumption, and reduce particulate emissions.
For maintenance teams, using a matched set of genuine BY612600012685 assemblies is crucial for engine balance. It ensures each cylinder contributes equally to power output, preventing misfires, rough idle, and excessive smoke. Replacing worn nozzles restores lost performance and efficiency.
For operators, this component directly influences drivability, fuel costs, and emissions compliance. A properly functioning set of nozzle assemblies delivers maximum power when needed, optimal economy during cruise, and clean exhaust under all load conditions.
1. Ensure the engine is cold and the work area is immaculately clean to prevent contamination of the fuel system or cylinder bore.
2. Disconnect the fuel lines and electrical connectors (if applicable) from the injector. Carefully remove the old injector and nozzle assembly from the cylinder head.
3. Thoroughly clean the injector bore in the cylinder head using specialized brushes and solvent. Remove all carbon deposits and old copper seal fragments.
4. Install new copper sealing washers onto the new BY612600012685 assembly. Lightly lubricate the assembly’s exterior with clean diesel fuel.
5. Carefully insert the new nozzle assembly into the cylinder head bore by hand, ensuring it is straight. Do not drop it.
6. Install and torque the retaining clamp or bolts to the exact specification in the correct sequence. Overtightening can distort the nozzle body.
7. Reconnect all fuel lines and electrical connections. Prime the fuel system to remove air. Start the engine and check for leaks at the fuel connections and around the nozzle seat (exhaust smoke color).
• Monitor engine performance for symptoms of nozzle failure: hard starting, excessive black or white smoke, loss of power, rough idle, or increased fuel consumption.
• Have injectors and nozzles professionally tested and calibrated at recommended intervals (typically every 150,000 – 300,000 km) using a pop tester to check opening pressure and spray pattern.
• Always replace nozzle assemblies in complete sets per engine to maintain cylinder balance. Mixing old and new nozzles degrades overall performance.
• Use only ultra-clean, high-quality diesel fuel and maintain strict fuel filter replacement schedules. Contaminants are the primary cause of nozzle wear.
• Keep detailed records of nozzle replacements and test results. This history is invaluable for diagnosing recurring fuel system issues.
• For fleets, establish a relationship with a certified fuel injection shop that can properly test, clean, and calibrate BY612600012685 assemblies.
Installation of the BY612600012685 requires cleanliness and precision. Contamination or incorrect torque can lead to immediate failure, cylinder damage, or poor engine performance. Professional installation is strongly recommended.
Choosing the genuine BY612600012685 Nozzle Assembly guarantees the material quality, geometric precision, and performance calibration that aftermarket nozzles cannot reliably match. SHACMAN engineers these components with exact hole diameters, spray angles, and needle valve clearances tailored to their engines’ combustion chamber design and air swirl.
Aftermarket nozzles may have inconsistent hole sizes, improper spray angles, or use inferior steel that erodes quickly, leading to poor atomization, dribbling, and altered engine timing. The genuine BY612600012685 is batch-tested for flow rate, spray pattern, and opening pressure to ensure every unit meets the strict OEM specification for optimal combustion.
Investing in OEM nozzles ensures your engine performs as designed, maintains optimal fuel economy and power, and meets emission standards. It provides predictable performance and longevity that protects your investment in the entire fuel injection system.
The BY612600012685 is highly regarded by SHACMAN fuel injection specialists and engine tuners for its consistency and reliability. Its precise calibration allows engines to achieve rated power and torque outputs while maintaining clean exhaust emissions.
Fleet maintenance reports show that trucks using genuine, professionally calibrated nozzle assemblies like the BY612600012685 experience more consistent fuel mileage across vehicles and require fewer unscheduled repairs related to injection system faults.
Operators and mechanics report noticeable improvements in throttle response, engine smoothness, and a reduction in exhaust smoke after replacing worn nozzles with a matched set of BY612600012685 assemblies, confirming their direct impact on drivability.
The BY612600012685 plays a critical role in environmental protection by enabling clean and complete combustion. A properly atomizing nozzle minimizes the production of unburned hydrocarbons (HC), carbon monoxide (CO), and particulate matter (soot).
By optimizing fuel efficiency, the nozzle assembly directly reduces the carbon footprint of the vehicle. Less fuel burned per kilometer means lower overall CO2 emissions.
Preventing nozzle dribble and poor combustion also avoids the release of raw fuel into the exhaust system and environment. Using genuine, durable components supports sustainable operation by extending service intervals and reducing waste from premature failures.
Each BY612600012685 assembly undergoes stringent quality control, including microscopic inspection of nozzle holes, dimensional checks of critical components, and sample testing on flow benches to verify spray pattern and opening pressure.
As a genuine SHACMAN component, the BY612600012685 is backed by the manufacturer’s warranty against defects in materials and workmanship, providing assurance of its quality and performance when installed correctly.
Purchasing from authorized distributors guarantees you receive an authentic, traceable part that has passed all OEM quality checks and is eligible for full warranty support.
While the initial cost of a set of genuine BY612600012685 nozzles is a significant investment, their long-term value is exceptional. They restore lost fuel economy, often paying for themselves through diesel savings over their service life.
Their reliability prevents costly collateral damage to pistons, rings, and exhaust after-treatment systems that can occur from poor combustion. For fleet operations, standardizing on OEM nozzles ensures predictable performance, simplifies tuning, and protects the substantial investment in the engine.
This proactive approach to fuel system maintenance with genuine parts maximizes engine life, optimizes operating costs, and ensures compliance with performance and emission standards, delivering superior total cost of ownership.
The BY612600012685 Nozzle Assembly is engineered for specific SHACMAN engine families, fuel system types (e.g., in-line pump, rotary pump, early common rail), and cylinder head configurations. Compatibility is defined by physical dimensions, thread type, opening pressure, and flow rate.
Using the correct OEM number BY612600012685 is absolutely essential to ensure the nozzle fits the injector body and cylinder head, and that its flow characteristics match the engine’s calibration. An incorrect nozzle can cause severe engine damage or poor performance.
Always verify fitment using your vehicle’s VIN, engine serial number, injector code, or through direct consultation with an authorized SHACMAN fuel injection specialist. Never guess when selecting this critical component.
The BY612600012685 Nozzle Assembly is the definitive component for unlocking your SHACMAN engine’s true potential. Its role in precise fuel metering and atomization is the cornerstone of power, economy, and clean operation.
Choosing the genuine BY612600012685 is an investment in engineering excellence, operational performance, and long-term reliability. Trust SHACMAN’s OEM specifications to deliver the precision, durability, and perfect calibration your heavy-duty engine demands.
Equip your next fuel system overhaul or performance upgrade with confidence. Select the authentic BY612600012685 Nozzle Assembly for guaranteed compatibility, superior combustion, and dependable power delivery throughout your truck’s service life.
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