The BY612630090013 is a genuine Shacman High-Pressure Connector, a critical sealing and connection component within your truck’s common-rail diesel fuel system. This precision part is responsible for creating a secure, leak-proof union between high-pressure fuel lines, the fuel rail, and fuel injectors. Engineered to withstand extreme pressures exceeding 2,000 bar, the integrity of connector BY612630090013 is paramount for safe and efficient engine operation.
A failure in this small but vital component can lead to catastrophic high-pressure fuel leaks, immediate engine shutdown, and a serious safety hazard. Manufactured to exacting OEM tolerances from high-grade materials, the Shacman BY612630090013 connector ensures a perfect fit and reliable seal, protecting your engine’s performance and your operational safety.
| Parameter | Specification | Details |
|---|---|---|
| OEM Part Number | BY612630090013 | Genuine Shacman Reference |
| Product Name | High-Pressure Connector | Fuel Line Fitting / Union |
| Brand | Shacman | Original Equipment Manufacturer |
| Primary Material | High-Strength Alloy Steel | Hardened and corrosion-treated |
| Pressure Rating | Ultra-High Pressure (UHP) | Rated for common-rail systems (>1800 bar) |
| Sealing Type | Metal-to-Metal Conical Seat | Creates a seal via precision machining |
| Thread Type | Metric Fine Thread (e.g., M12x1.5) | Ensures secure, high-clamp force |
| Compatibility | Shacman Common-Rail Systems | Specific to rail and injector connections |
| SEO Description | Genuine Shacman High-Pressure Connector BY612630090013. OEM seal for fuel lines, rail & injectors. Ensures leak-proof performance at extreme pressures for safety and reliability. | |
In a modern diesel engine, fuel is pressurized to extreme levels—often above 2,000 bar—in a common “rail.” The High-Pressure Connector BY612630090013 is the critical interface that joins the high-pressure fuel lines to this rail and to the injectors. It is the gateway through which pressurized fuel flows.
Its sole purpose is to maintain a perfect, leak-free seal under these immense and pulsating pressures. Unlike a simple pipe thread, this connector uses a precision-machined conical sealing surface that mates with an identical seat, creating a robust metal-to-metal seal when torqued.
Standard pipe threads (NPT) or simple compression fittings cannot handle common-rail pressures. They will leak or fail catastrophically. The BY612630090013 uses a conical seat design (e.g., DIN 73378/ISO 8434-2) where the seal is made away from the threads, preventing stress fractures and ensuring containment.
Precision Machined Sealing Surfaces: The sealing cone on the BY612630090013 is ground to a microscopic finish. This ensures full 360-degree contact with the mating seat, leaving no path for high-pressure fuel to escape. This precision is unattainable with generic fittings.
Optimal Material Strength and Hardness: Made from specific alloy steel and heat-treated to achieve the perfect balance of strength and toughness. It must be hard enough to resist deformation but not brittle, preventing cracking under installation torque and vibration.
Corrosion-Resistant Plating: Often plated with zinc-nickel or similar corrosion-resistant coatings. This protects against rust from road spray and moisture, which could otherwise pit the sealing surface and create a leak path over time.
Guaranteed Dimensional Accuracy: As a genuine Shacman part, its thread pitch, cone angle, and overall dimensions are guaranteed to match the OEM fuel rail and injector inlets perfectly. This eliminates cross-threading risks and ensures correct sealing geometry.
1. Impeccable Cleanliness: Before installation, the fuel system must be depressurized. The connector’s threads and sealing cone, as well as the mating port, must be impeccably clean. A single grain of dirt can score the sealing surface and cause a leak.
2. Hand-Start and Proper Torque: Never force the connector. Start threading it by hand to ensure it is not cross-threaded. Then, using a calibrated torque wrench, tighten to the exact manufacturer’s specification (e.g., 30 Nm + 90° turn). This creates the necessary metal deformation for the seal.
3. Never Use Sealants or Teflon Tape: Sealants, pastes, or tape are strictly prohibited on high-pressure conical seat fittings. They can contaminate the fuel system, damage injectors, and interfere with the pure metal-to-metal contact required for the seal.
4. Post-Installation Pressure Test: After installation, the fuel system must be pressurized and held. A thorough visual and physical inspection for any weeping or dripping at the connector is mandatory before starting the engine.
High-pressure connectors are often considered a “one-time use” or “one-time torque” component. The controlled plastic deformation of the sealing surfaces during installation is what creates the seal. Reusing an old connector that has already been torqued may not re-form correctly, leading to a leak. For critical safety, always install a new BY612630090013.
A failing connector typically announces itself with a high-pressure fuel leak. This can range from a persistent smell of diesel, a fine mist or wetness around the rail/injector, to a more severe hissing spray. Even a small leak drastically reduces rail pressure.
Engine symptoms include immediate loss of power, rough running, difficulty starting, or failure to start. The engine control unit will detect low rail pressure and may log fault codes (e.g., P0087). Any sign of fuel near these fittings requires immediate shutdown and inspection.
This component is a primary safety device on your engine. A counterfeit or substandard fitting may have incorrect metallurgy, improper hardness, or imprecise machining. Under high pressure, it could crack, strip, or allow fuel to spray at supersonic velocity—an extreme fire and safety risk.
The genuine Shacman BY612630090013 is manufactured under strict quality controls, with material certifications and batch testing. It is burst-pressure tested far beyond operating limits. For a component where failure is not an option, the OEM part is the only responsible choice.
Not all high-pressure connectors are the same. The BY612630090013 is designed for specific Shacman engine models and their particular rail/injector design. Using an incorrect connector, even if it threads in, can have a different cone angle, seat depth, or thread length.
This can result in insufficient clamping force (leak) or bottoming out before the seal is made (leak). It can also protrude into the fuel passage, disrupting flow. Always verify the OEM number to ensure compatibility with your specific engine’s fuel system layout.
High-pressure connectors are not a routine service item but should be inspected whenever the fuel system is opened. During injector or rail replacement, it is considered best practice to install new connectors. Their condition should be checked for any signs of corrosion, thread damage, or scoring on the sealing cone.
If a leak is traced to a connector, both the connector AND the mating seat on the rail or injector should be inspected for damage. A damaged seat may require replacement of the larger assembly. Never attempt to “repair” a sealing cone with tools or abrasives.
A high-pressure diesel leak is one of the most dangerous failures on a truck. The fuel can auto-ignite on hot engine surfaces. The genuine BY612630090013 connector is your first and most important line of defense against this hazard, engineered to contain this immense energy safely.
Environmentally, a leak is a major contaminant. Using a reliable OEM connector prevents fuel waste and soil/water pollution, helping operations maintain environmental compliance and corporate responsibility standards.
The Shacman High-Pressure Connector (OEM: BY612630090013) is a masterpiece of precision engineering. It is a small, unsung component that bears the tremendous responsibility of sealing the world’s highest fluid pressures in a vehicle.
Do not compromise on the component that holds your fuel system together. For guaranteed safety, performance, and peace of mind, insist on the genuine Shacman BY612630090013 for every repair and maintenance procedure.
