0445020517 BO-SCH CP4 COMMON RAIL PUMP 5303387 FOR ISF3.8

0445020517 Bo-sch CP4 Common Rail High Pressure Pump

0445020517 is a common rail high pressure fuel pump designed for electronically controlled diesel fuel systems. The same product number may be written as 0 445 020 517, 0445 020 517 or 0445-020-517. Its main function is to draw fuel from the low-pressure supply circuit, compress it and deliver a stable high-pressure fuel supply to the common rail.

The pump belongs to the Bo-sch CP4 family. Its specific catalogue designation is CR / CP4N1 / L50 / 20-S, confirming that this is a CP4N1 pump rather than a CP3 pump. The product GTIN / EAN is 4047025270106.

The strongest associated Cum-mins number is 5303387. Cum-mins dealers and diesel-parts suppliers also list 5303387RX as a remanufactured fuel pump reference. The RX suffix should therefore remain in a separate Reman Reference field and should not be used to describe a new genuine pump.

Bo-sch’s Chinese OEM common-rail application table directly connects 0445020517 with the Cum-mins “LDA 3.8L-Avalon” application. In the international diesel-parts market, the same pump is commonly sold for Cum-mins ISF3.8 engines. Because the terminology differs between the Bo-sch project name and aftermarket application descriptions, the old pump number remains the safest ordering standard.

The fuel metering valve associated with this pump is commonly identified by Bo-sch numbers 1462C00992 and 0928400821. Cum-mins number 5298424 is linked to this valve rather than to the complete pump. Keeping the valve and complete-pump numbers in separate database fields prevents customers from ordering a complete high-pressure pump when they only require the fuel control actuator.

External appearance alone cannot confirm compatibility. Before shipment, compare the part number, drive end, mounting holes, fuel inlet, high-pressure outlet and metering-valve connector with the customer’s old pump.

Product Specifications

Main Features

• Genuine / original common rail high-pressure pump
• Bo-sch CP4N1 pump design
• Cum-mins reference number 5303387
• Trade designation CR / CP4N1 / L50 / 20-S
• Suitable for matched Cum-mins 3.8-litre applications
• Fuel metering valve references available
• Pump-number inspection before shipment
• Original or protected export packing available

Applications

Application Notice

Please confirm the old pump number before ordering.

Do not identify the pump only by:

• Cum-mins 3.8L engine name
• Foton truck model
• External pump appearance
• Metering valve number 5298424
• Market reference 5293310

The final confirmation should be based on the pump label, engine serial number and physical pump configuration.

Packing And Delivery

The genuine pump can be supplied with original packing or protected export packing according to stock and supply channel. The fuel inlet and high-pressure outlet should remain sealed during storage and international transportation.

The pump must be protected against dust, moisture and metal contamination. Do not remove the protective caps before installation.

Order Confirmation

Please provide:

1. Old pump number
2. Cum-mins reference number
3. Engine model
4. Vehicle or equipment model
5. Pump-nameplate photo
6. Metering-valve connector photo
7. Drive-end and mounting photos
8. Engine serial number
9. Required quantity
10. New genuine or reman requirement

FAQ

Is 0445020517 a fuel pump or an injector?

0445020517 is a common rail high pressure fuel pump. It is not a diesel fuel injector.

What is the full Bo-sch number?

The formatted number is 0 445 020 517.

What pump family does it belong to?

It belongs to the CP4 / CP4N1 pump family. Its trade number is CR / CP4N1 / L50 / 20-S.

Is 5303387 related to 0445020517?

Yes. 5303387 is the strongest Cum-mins cross-reference associated with the pump.

What does 5303387RX mean?

5303387RX is a related Cum-mins remanufactured fuel pump reference. It should not be presented as a new genuine pump number.

Is 5298424 a fuel pump number?

No. It is associated with the fuel metering valve or control actuator used on the pump.

Does 0445020517 fit an ISF3.8 engine?

ISF3.8 is a common market application reference. Final compatibility should be confirmed from the old pump label.