Liwei M1003 P152 Diesel Injector Nozzle – High-Atomisation Replacement for Compact Diesel Combustion Chambers
1. Product:M1003 P152
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
While rail pressure and injection duration are determined by the engine management system, the injector nozzle is the component that directly influences how effectively that pressure is converted into useful work. The Liwei M1003 P152 is a precision-ground nozzle engineered to meet the flow and atomisation requirements of Bosch and Denso common rail injectors used in compact, high-swirl diesel engines. This nozzle features a 7-hole configuration with 0.175 mm diameter orifices and a 148° spray angle – a geometry that produces a droplet SMD of approximately 19 µm, providing the fine atomisation required for the smaller combustion bowls of 1.6L to 2.2L diesel engines. The defining metric of the M1003 P152 is its orifice flow consistency – a maximum hole-to-hole variation of less than 1.5%, ensuring a symmetrical spray pattern that delivers even fuel distribution across the combustion chamber.
█ Application Coverage – Compatible Injector Platforms
The M1003 P152 is designed to replace nozzles in the following common rail injector families:
Bosch CRI 2.0 / 2.2 – Injectors with 7-hole × 0.175 mm nozzle geometry
Denso G2 / G3 – Injectors requiring a 0.175 mm orifice configuration
Vehicle Applications – VW/Audi 1.6/2.0 TDI, Mercedes OM651, BMW N47, PSA/Ford 1.6/2.0 HDi, and similar platforms
The nozzle is a direct replacement for Bosch part numbers 0445110414, 0445110423, and Denso nozzles with the 7 × 0.175 mm configuration. It is supplied as a bare nozzle for installation into the injector body – the needle and nozzle must be lapped together as a matched set during assembly.
▐ Technical Specifications – Dimensional and Flow Data
| Parameter | Specification |
|---|---|
| Nozzle Type | Inward-opening, differential pressure |
| Number of Holes | 7 |
| Orifice Diameter | 0.175 mm |
| Spray Angle | 148° |
| Needle Diameter (guide) | 4.0 mm |
| Needle-to-Nozzle Clearance | 3 – 5 µm |
| Material | High-speed steel (M42-grade) |
| Surface Coating | DLC (diamond-like carbon) on guide, 1.2 µm |
| Surface Hardness | 60 – 64 HRC |
| Surface Finish (guide) | Superfinished (Ra ≤ 0.08 µm) |
| Max. Rail Pressure Compatibility | 1,800 bar (26,100 psi) |
| Hydraulic Opening Pressure | 215 ± 10 bar |
| Static Flow @ 100 bar (nominal) | 750 cc/min |
| Seat Angle | 60° (conical) |
| Seat Diameter | 3.6 mm |
| Needle Lift | 0.20 mm |
| Matching Requirement | Lapped to specific injector body |
The finer 0.175 mm orifices deliver a droplet SMD of 19 µm, improving combustion efficiency and reducing particulate emissions, but require fine fuel filtration (2 µm absolute) to prevent blockage.
◆ Construction Details – The Precision-Atomisation Design
→ M42 High-Speed Steel: Manufactured from cobalt-containing steel, providing hot hardness up to 650°C.
→ DLC Coating: The needle guide receives a 1.2 µm DLC coating, reducing friction and extending service life in high-soot environments.
→ Superfinished Guide Surface: The guide is superfinished to Ra ≤ 0.08 µm, ensuring smooth needle movement.
→ Flow-Balanced Orifices: The 7 holes are laser-drilled and flow-balanced to a hole-to-hole variation of less than 1.5%, ensuring symmetrical spray.