Description
Engineered to meet the stringent demands of BMW’s advanced TwinPower Turbo diesel engine platforms (including N47, N57, B47, and B57 series), this INA Common Rail Diesel Injector delivers ultra-precise fuel metering and high-pressure atomization. Operating under extreme rail pressures, it ensures optimal diesel fuel-air mixing, maximizing thermal efficiency, restoring low-end torque, and minimizing particulate emissions. Built with OE-grade internal valving and high-durability solenoid/piezoelectric actuation components, this injector eliminates diesel knock, rough idling, and engine power hesitation. It is a reliable replacement product for global auto parts importers, diesel fuel injection specialists, and European commercial vehicle fleet managers.
Technical Parameters
| Category | Specifications & Technical Details |
| Structural Design | High-pressure common rail fuel injection structure integrating a micron-level multi-hole nozzle, internal high-frequency servo valve, precision control piston, high-sensitivity solenoid / piezo actuator, and built-in high-pressure filter. |
| Core Material | Constructed with a high-strength carburized alloy steel housing, high wear-resistant nitride steel needle valve assembly, and FKM / Viton O-ring seals resistant to high-pressure diesel and biodiesel corrosion. |
| Energy Transmission | Ultra-high pressure hydraulic pulse direct injection transmission — controlled by the ECU via solenoid / piezo pulses to achieve multiple injection events per cycle, including pilot, main, and post injections. |
| Circuit & Insulation System | High-speed response electrical drive interface with dielectric withstand strength exceeding 500V DC. Built-in high electromagnetic compatibility (EMC) suppression design enables precise execution of microsecond-level commands from BMW DDE (Digital Diesel Electronics) engine computers. |
| Protection & Durability | Capable of withstanding extreme common rail pressures up to 2,000–2,500 bar. Excellent resistance to deposit coking and low-sulfur diesel (ULSD) lubricity degradation. Stable operation in high-temperature, high-pressure engine environments from -40°C to +150°C. |
Applicable Car Brands & Models
Typical warning signs include excessive black or white exhaust smoke, loud engine knocking (diesel clatter), rough idling, hard starting when cold, loss of engine power under load, and active Check Engine Light fault codes related to fuel pressure or cylinder misfires.
Yes. Modern BMW DDE systems require the specific IMA/QR calibration code printed on the injector to be programmed into the Engine Control Unit (ECU) using a diagnostic tool. This ensures precise fuel quantity adjustment for each cylinder.
Operating at pressures up to 2,500 bar, the injector breaks diesel fuel into micro-droplets. This superior atomization creates a more homogenous air-fuel mixture, resulting in cleaner combustion, higher thermal efficiency, reduced soot accumulation, and extended DPF (Diesel Particulate Filter) life.
Minimum Order Quantity (MOQ) depends on specific part number availability. For high-demand BMW SKUs in stock, the MOQ starts at 10–20 units. Typical lead times are 3–5 business days for stock items and 15–30 days for bulk factory production orders.
