From the world leader of diesel fuel system design
The common rail system is a major advancement in diesel technology. Bosch launched its common rail system for passenger car diesel engines in 1997. Today, Bosch is the world leader in diesel fuel system design and the OE supplier for 100% of class 1-3 light duty vehicles in North America.
Common rail technology provides diesel engines with:
Bosch manufactures two types of injectors for common rail – solenoid and piezo. Bosch injectors are the standard for the industry and provide superior performance and durability under most operating conditions.
Bosch diesel fuel injectors fall into three categories:
Precision spray holes for long service life and optimum performance
Patented carbon coating of the nozzle needle for friction reduction and wear resistance resulting in long life
Precision engineered with high-strength steel designed to withstand the high pressure and rapid operational movement
Precision matched to withstand high pressures, ensuring superior injection performance
Precision wound magnet coil for instantaneous injector performance within the engines optimal performance range
Superior wear resistance for reduced ball seat erosion and long life
*When application demands
High quality steel with special inclusion reduction technology for long life
All Bosch new common rail injectors come with a 2 year, 100,000 mile warranty.
Glow Plug Technical Guide
Common Rail Systems CRS2
Common Rail Systems CRS3
Download the printable brochures for more information.
The key cause of injector failures are:
Poor fuel filtrationA common problem with diesel injectors today is ball seat erosion. The heart of the common rail injector is the magnetic valve through which fule passes at extremely high pressure. The passage opening is sealed using a small ball that is only 1mm in size. A proper seal is critical for proper injector performance. Abrasive contaminants can erode and damage the ball seat causing the ball not to seal properly leading to improper injection.
To ensure exact performance within the designed service life of the injector, use only OE filters or filters having the same OE micron rating and follow the recommended OE filter change interval. Using anything less can cost you more in the long run.
Fuel contaminationRepair statistics show that the majority of diesel engine problems stem from contaminated fuel. One of the most common problems with diesel injectors is corrosion, which is caused by water in the fuel.
How does water get into the fuel? A vented cap allows air to enter the storage tank to equalize pressure as the fuel flows out. The outside air contains moisture and this moisture condenses into water inside the tank.
Always purchase fuel from a reputable service provider and use a proper fuel/water separator.
Incorrect installationMissing sealing rings, incorrect tightening torque, incorrect cleaning of nozzle can cause poor performance, misfiring, black smoke and check engine light (MIL) to come on.
Always follow the engine manufacturer's maintenance procedures.
The old adage "you get what you pay for" applies here. Bosch tests all remanufactured parts to OE specifications. Cheaper alternatives can potentially cut corners. It is best to spend more and get a quality part that won't leave you stranded or worse – cause expensive damage to your engine.
Bosch diesel injectors are the standard for the industry and provide superior performance and durability under most operating conditions. 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. The two technologies are not compatible – a solenoid injector can't replace a piezo injector and vice versa.
An important part of every diesel tune up
Often superior to the OE injectors that they replace
100% New for exact precision
© Robert Bosch GmbH