Bosch 4-Pin Common Rail Diesel Connector | High-Precision Injector Wiring Plug For CRDI Systems | Durable Automotive Electrical Interface
1. Product:Bosch 4-Pin Common Rail Diesel Connector
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
In modern diesel common rail systems, performance is no longer dictated solely by injectors or pumps-it is governed by signal accuracy. The Bosch 4-pin connector acts as a critical electrical bridge between the ECU and injector/actuator units, ensuring that microsecond-level signals are transmitted without distortion.
Unlike traditional low-pressure systems, common rail platforms operate above 2000 bar injection pressure, where timing deviations of even 1 ms can affect combustion efficiency.
➡ This makes the connector not just a plug-but a precision communication node.
Structural Engineering: More Than Plastic Housing
The Bosch 4-pin connector is engineered with a multi-layer architecture:
Terminal Core: High-conductivity copper alloy with tin plating
Sealing System: Elastomer seals for IP-rated protection (water, oil, dust)
Locking Mechanism: Secondary lock + click-fit retention
Housing Material: Heat-resistant PA66 or equivalent
Bosch connectors are designed to operate between −40°C to +120°C, ensuring stability across extreme environments.
✔ Result: Stable signal transmission under vibration, heat, and chemical exposure.
Compatible Bosch 4-Pin Injectors List
| No. | Bosch Injector Part Number | Connector Type | Application Note |
|---|---|---|---|
| 1 | 0445120104 | 4-Pin | Common Rail Diesel System |
| 2 | 0445120207 | 4-Pin | High-Pressure CRDI Injector |
| 3 | 0445120194 | 4-Pin | Passenger Vehicle Diesel |
| 4 | 0445120195 | 4-Pin | Light Commercial Diesel |
| 5 | 0445120270 | 4-Pin | Heavy Duty Engine |
| 6 | 0445120271 | 4-Pin | Commercial Vehicle |
| 7 | 0445120085 | 4-Pin | Early CR System |
| 8 | 0445120286 | 4-Pin | Euro IV / V Diesel |
| 9 | 0445120287 | 4-Pin | Advanced CRDI Platform |
| 10 | 0445120288 | 4-Pin | Multi-Injection System |
| 11 | 0445120298 | 4-Pin | High Precision Injector |
| 12 | 0445120299 | 4-Pin | Commercial Diesel Engine |
| 13 | 0445120300 | 4-Pin | Heavy Load Application |
| 14 | 0445120301 | 4-Pin | Industrial Diesel System |
| 15 | 0445120302 | 4-Pin | Off-Road Equipment |
| 16 | 0445120303 | 4-Pin | Construction Machinery |
| 17 | 0445120385 | 4-Pin | High Efficiency Injector |
| 18 | 0445120386 | 4-Pin | Emission-Control Diesel |
| 19 | 0445120374 | 4-Pin | Euro V Platform |
| 20 | 0445120375 | 4-Pin | Advanced Combustion System |
| 21 | 0445120642 | 4-Pin | Latest Generation CR Injector |
All listed injectors are designed for Bosch common rail diesel systems (CRDI)
Compatible with 4-pin electrical connector interface
Ensure matching pin configuration before installation
Suitable for high-pressure diesel injection environments (up to 2000+ bar system)
System Integration Perspective
Instead of viewing the connector as a spare part, consider it part of the electronic injection ecosystem:
ECU → Connector → Injector → Combustion Chamber
Each connection point introduces potential signal loss. The Bosch 4-pin connector minimizes this through:
Low contact resistance
Stable pin alignment
Anti-vibration locking
✔ Ensures accurate injector opening duration
✔ Supports precise diesel atomization