BOSCH CB18 Fuel Injection PumpElement (Repair Kit)

The Bosch CB18 fuel transfer pump is a core precision component within the Bosch common rail diesel injection system,representing a signifcant technological achievement tailored for the global light -duty diesel engine market.As a key element of theBosch CRS1.3 economy common rail system, the CB18 high- pressure pump was developed through close collaboration with partnersand achieved through localized production. It is meticulously engineered to meet stringent emission regulations while delivering¥.pumps wth the precision of modern electronic common rail technology.Its drive ratio is identicalto that of traditional mechanicalinjection systems, making engine modifications and upgrades remarkably straightforward. The CB18 fuel pump is capable ofgenerating system pressures of up to 1400 to 1600 bar, ensuring optimal fuel atomizationwithin the cylinders and therebyenhancing combustion efficiency. It complies with China's Stage Illand IV emission standards, as well as European Stage Illstandards, embodying a perfect synersy of high effciency and environmental responsibility. Whether deployed in passenger cars orlight commercial vehicles.the Bosch CB18 fuel pump.with its renowned reliability. precision manufacturing, and exceptionaldurability, stands as a robust guarantee for diesel engines to maintain powerful performance and stable operation.

 

 

 

 

Type: Twin-plunger (CB18)

Drive Ratio: 1:2

HousingMax

Pressure: 1600 bar (up to 2000 bar for some variants)

Flow Rate: Up to 1000 L/min
Power Support: Up to 110 k

WCommon OE Nos: 0445025040,0445025027,0445025021

Material: Hardened alloy steel/High-speed steel

Weight: Approx. 0.5 kg

 

 

 

High Pressure: 1600 bar for superior atomization
Fuel Efficient: Optimized combustion reduces consumption
Precise Metering: Accurate fuel control across all loads
Durable Build: Hardened alloys resist wear
Eco-Friendly: Meets China Stage Il/IV & Euro III
Easy Fit: Same drive ratio as mechanical pumps

 

 

Do not disassemble precision internal components
Internal parts include matched plunger and delivery valve
Repair requires authorized Bosch service center
Must be calibrated on test bench (e.g., CRS-708S) after repair
Regular inspection of high-pressure lines advised
Always test flow and pressure after service

 

How to spot CB18 pump failure?
Hard start, no start, low power, black/white smoke, high fuel use. Diagnostic codes: low rail pressure, metering unit errors.

 

What does the Fuel Metering Unit do?
It controls fuel flow to plungers, regulating rail pressure. If stuck closed = no start. If stuck open = rough run, smoke, limp mode.

 

Why calibrate after replacing pump?
Precision parts need bench testing (CRS-708S) to verify pressure, flow, and leakage meet Bosch specs. Uncalibrated = poor performance.

 

Distributor stocking tips?
Match OE numbers (e.g., 0445025040 for 4JB1). Source from authorized channels. Check packaging and certificates. Clarify warranty (6-12 months).

 

Why "1500 RPM power cut"?
ECU limp mode. Common causes: low rail pressure (bad pump, clogged filter, metering unit fault), high coolant temp, intake issues. Test fuel system first.

 

 

To make your purchasing experience smooth and easy, we offer a variety of secure payment options:

We're here to make your order process worry-free - choose the payment method that works best for you!

 

 

Hot Tags: bosch cb18 fuel injection pumpelement (repair kit), China bosch cb18 fuel injection pumpelement (repair kit) manufacturers, suppliers, factory