Katerina Swanson
Bosch is a well-known and trusted manufacturer of fuel injectors, and its name has become synonymous with quality. Bosch injectors are produced to meet OE specifications and are guaranteed to provide OE performance. With over 75 years of experience in the industry, Bosch is the leading OE supplier of diesel fuel systems for diesel passenger cars, SUVs, vans, and pickup trucks. Bosch manufactures two types of injectors for common rail – solenoid and piezo – which differ in the speed and precision with which they inject diesel fuel. Bosch injector part numbers are traditionally 10 digits in length and begin with 04, but they can also start with 09 if they are factory remanufactured or F0 for late model common rail components.
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What You'll Learn
Bosch part numbers are 10 digits long, beginning with 04 or 09
Bosch part numbers are easily identifiable by their length and starting digits. All Bosch part numbers are 10 digits long and begin with either the number 04 or 09. This consistent and distinct feature makes them quickly recognizable as Bosch fuel injector part numbers.
The first two digits, whether 04 or 09, provide initial insight into the fuel injector's flow rate characteristics. The 04 series denotes a higher flow rate, indicating a higher-performance injector, while the 09 series indicates a lower flow rate, suggesting a more standard or specialized application. This distinction is key to understanding the injector's compatibility with different engine types.
The subsequent eight digits in the part number sequence offer a detailed specification of the fuel injector's design, performance, and functionality. Each digit contributes valuable information that helps identify the injector's specific characteristics and intended use. This detailed coding system ensures a precise understanding of the injector's capabilities and compatibility.
Recognizing the distinct part number format of Bosch fuel injectors is a crucial first step in identification. It not only confirms the injector's brand but also provides initial insights into its flow rate characteristics. This knowledge forms the foundation for further investigation, allowing for a more precise determination of the injector's type, performance, and compatibility with various engine systems. Thus, the 10-digit part number, starting with 04 or 09, serves as a gateway to accessing comprehensive information about Bosch fuel injectors.
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Bosch's two injector types: solenoid and piezo
Bosch is the leading OE supplier of diesel fuel systems for diesel passenger cars, SUVs, vans, and pickup trucks. Bosch injectors are produced to meet OE specifications, guaranteeing performance and compliance with emission specifications. Bosch manufactures two types of injectors for common rail – solenoid and piezo.
Solenoid injectors operate at 160 microseconds, while piezo injectors operate at 100 microseconds. The two technologies are not compatible – a solenoid injector cannot replace a piezo injector and vice versa. The difference between the two injectors is the speed and precision with which they inject diesel fuel. The piezo actuator in the piezo injector is integrated into the housing, making the injector slimmer and requiring less installation space. The robust piezo principle also prepares the injector for different fuel qualities.
The CRI3 piezo injector injects into the cylinder the precise amount of fuel required for economical combustion, regardless of the driving situation. The third-generation piezo injectors enable a high degree of freedom when designing the injection characteristic and allow up to ten individual injections per injection cycle. The injection process is highly flexible and can be controlled via a piezo actuator made of several hundred layers of piezo ceramic. When voltage is applied, the ceramic expands by a few thousandths of a millimeter, setting the jet needle in motion.
Bosch injector part numbers are traditionally 10 digits in length, beginning with "04". However, part numbers can also begin with "09" for factory remanufactured parts or "F0" for late-model common rail components. The part number will be located on the component, either on a parts ID tag, a sticker, or printed on the plastic moulding.
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Bosch's early fuel injection system was called Jetronic
The D-Jetronic was a refinement of the Electrojector fuel delivery system by the Bendix Corporation in the late 1950s. Bendix licensed the design to Bosch, and it became the first widely successful precursor of modern electronic common rail systems. It featured constant pressure fuel delivery to the injectors and pulsed injections. The D-Jetronic used analogue circuitry, with no microprocessor or digital logic, and about 25 transistors in the ECU.
The L-Jetronic, a variation of the Jetronic system, was often called Air-Flow Controlled (AFC) injection. It measured airflow into the engine using a moving vane or volume air flow sensor (VAF). This system was used in 1980s-era European cars and BMW K-Series motorcycles. The L-Jetronic used custom-designed integrated circuits, resulting in a simpler and more reliable engine control unit (ECU) than the D-Jetronic. Lucas, Hitachi Automotive Products, and NipponDenso licensed some of Bosch's L-Jetronic concepts and technologies to produce similar fuel injection systems for Asian car manufacturers.
Bosch also developed the K-Jetronic, a mechanical fuel injection system that injects fuel continuously and does not require any form of drive. The system uses an electrically driven fuel pump to develop the necessary pressure for injection. The amount of fuel injected is based on the amount of air drawn into the engine, and the injection valves are controlled by an electronic control unit (ECU).
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Bosch's injectors are produced to OE specifications
Bosch is the leading original equipment (OE) supplier of diesel fuel systems for diesel passenger cars, SUVs, vans, and pickup trucks. Bosch injectors are produced to OE specifications, ensuring consistent quality and performance. The company's end-of-line testing uses the exact OE test specifications, guaranteeing OE performance and compliance with all emission standards.
Bosch manufactures two types of injectors for common rail systems: solenoid and piezo. The difference lies in their speed and precision of diesel fuel injection. Solenoid injectors operate at 160 microseconds, while piezo injectors work at 100 microseconds. It is important to note that these two technologies are not interchangeable. Bosch injector part numbers are traditionally 10 digits long, starting with "04". However, remanufactured parts may begin with "09", and late-model common rail components may start with "F0".
To identify Bosch fuel injectors, you can refer to the part number, which is typically located on the component. It may be on a parts ID tag riveted to the housing, a parts sticker, or printed on the plastic moulding. Additionally, aftermarket scan tools like the Autel MX808 or Autel AP200 can be used to determine injector type.
Bosch's commitment to OE specifications and rigorous testing ensures the reliability and performance of their injectors. By adhering to OE standards and using authorised Bosch suppliers, vehicle owners can maintain the optimal performance of their diesel engines.
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Bosch is the leading OE supplier of diesel fuel systems
Bosch's injectors are designed to heat up quickly and retain their glow, even at extremely low temperatures. This feature ensures that modern diesel engines are instantly ready to go. Additionally, a controlled post-glow phase helps achieve low emissions and a quiet engine. Bosch's intelligent energy management system also relieves strain on the electrical system and battery.
The company's remanufactured diesel injectors are produced in the same facility as their new diesel injectors, guaranteeing the same high standards and performance. Bosch's commitment to continuous improvement means their products are manufactured with the latest upgrades to components and specifications. Their end-of-line testing uses exact OE test specifications, ensuring OE performance and compliance with emission standards.
Identifying Bosch fuel injectors can be done by locating the Bosch part number on the component. These part numbers are traditionally 10 digits in length, beginning with "04". However, they can also start with "09" for factory-remanufactured parts or "F0" for late-model common rail components. The part number can be found on a parts ID tag, sticker, or printed on the plastic moulding of the component.
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Frequently asked questions
Bosch part numbers are traditionally 10 digits in length beginning with "04". They can also begin with "09" if they are factory remanufactured or "F0" for late model common rail components. The Bosch part number will be located on the component either on a parts ID tag riveted to the housing, on a parts sticker, or printed onto the plastic moulding of the component.
Bosch is a global leader in the development and manufacturing of diesel fuel injection systems and components for more than 75 years. Bosch authorized dealers offer a two-year warranty that covers parts and labor on select products. Bosch is also known for its quality, as their products are produced to OE specifications.
Bosch manufactures two types of injectors for common rail – solenoid and piezo. The difference between the two injectors is the speed and precision with which they inject diesel fuel. Solenoid injectors operate at 160 microseconds, and piezo injectors operate at 100 microseconds.
You can identify the injector by using aftermarket scan tools like the Autel MX808 or the Autel AP200. Alternatively, you can manually identify the injectors by removing engine covers and checking their part number. All of these injectors will be labeled with a Bosch number (10 digits) and the BMW number in its short format (7 digits).
The earliest Bosch injector is the Jetronic, which was the Bosch name for its early fuel injection system.
