Bosch 0445120385 & 0445120386 CRI 2.4 Injectors: Pressure Ceiling, Rate Shaping & Euro 6 Cylinder Balance
1. Product:0445120385 / 0445120386
2. Compatible Equipment: Diesel Fuel Injection Systems
3. Manufacturer: Aftermarket OEM Replacement
4. Condition: Brand New, Fully Tested
5. Origin: ABOSEDE Diesel
6. Shipping period: 3-5 business days
7. Payment terms: T/T, Western Union, PayPal
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Product Introduction
The 0445120385 and 0445120386 are often listed together because they share nozzle geometry and CRI 2.4 architecture. That does not make them interchangeable. The difference is control valve dynamics and pressure ceiling. The 0445120385 is calibrated for 1,800 bar systems. The 0445120386 supports 2,000 bar and has lower inductance for faster pull-in. In Euro 6 diesel engines, these differences affect injection rate shaping, pilot stability, cylinder balance, and emissions consistency. This guide compares both units by application, electrical data, hydraulic behaviour, validation requirements, and installation control points.
🔍 Why 0445120385 and 0445120386 Are Not Interchangeable
Both injectors use a 7-hole × 0.192 mm nozzle and a 152° spray angle. Both can deliver multiple pilot events per cycle. The 0445120385 operates at 1,800 bar with coil resistance around 0.70–0.80 Ω, pull-in current near 18.5 A, and inductance around 1.65 mH. The 0445120386 operates at 2,000 bar with resistance around 0.65–0.75 Ω, pull-in current near 19.5 A, and inductance around 1.55 mH. Lower inductance shortens pull-in time, which matters on higher-speed engines. Using the wrong unit can shift pilot quantity, alter combustion noise, and cause cylinder imbalance.
🚗 Application Map: BMW N57, Land Rover SDV6, Mercedes OM651
The 0445120385 is commonly referenced for BMW N57D30 3.0L diesel in F10, F11, F15, and F25 models, Land Rover 3.0L SDV6 306DT in Discovery 4 and L405 Range Rover, and Jaguar 3.0L V6 diesel in XF, XJ, and F-Pace. The 0445120386 is commonly referenced for Mercedes-Benz OM651 2.1L four-cylinder in W205, W447, and W906, Renault/Nissan 2.3L dCi M9T in Trafic and NV400, and Peugeot/Citroën 2.2L HDi DW12C in Boxer and Jumper. Confirm by VIN, engine code, OEM number, and connector keying. Pin count and connector family must be verified because listings sometimes mislabel them.
⏱️ Injection Rate Shaping and Six-Pilot Capability
Euro 6 combustion depends on multiple small injection events before the main event. Up to six pilot injections per cycle can reduce combustion noise and NOx. This only works if each pilot quantity is repeatable. The 0445120385 and 0445120386 use hydraulic damping to suppress pressure oscillations when the solenoid closes. That reduces secondary needle bounce, which can create unintended after-injection and particulate output. The 0445120386's faster pull-in supports shorter pilot durations, which is useful on higher-speed OM651 applications.