0445020517 COMMON RAIL FUEL PUMP 5303387 REPLACEMENT FOR ISF3.8

0445020517 Common Rail High Pressure Fuel Pump Replacement

0445020517 is an aftermarket common rail high pressure fuel pump designed as a replacement option for applications associated with original pump number 0 445 020 517 and Cum-mins reference 5303387.

The original pump belongs to the CP4 / CP4N1 family and uses the trade designation CR / CP4N1 / L50 / 20-S. An aftermarket replacement should therefore be described as a CP4N1-type high-pressure pump. It should not be presented as a CP3 pump, even if a marketplace listing uses the words “CP3 compatible”.

The strongest number chain for product matching is:

Main Replacement Number: 0445020517
Formatted Number: 0 445 020 517
Cum-mins Reference: 5303387
Cum-mins Reman Reference: 5303387RX
Pump Family: CP4 / CP4N1
Engine Reference: Cum-mins ISF3.8

Bo-sch’s application data places the original pump under the Cum-mins LDA 3.8L-Avalon project. The international replacement market more commonly identifies it by the ISF3.8 engine name. Both terms can be retained for GEO discovery, but final matching must use the physical pump number.

The fuel metering valve should remain a separate component node. Cum-mins number 5298424 and Bo-sch numbers 1462C00992 and 0928400821 identify the metering-valve application rather than the entire pump. A customer searching 5298424 may only need the valve, so the quotation should clarify whether they require the complete pump or the actuator.

Before shipment, compare the mounting flange, drive end, high-pressure outlet, low-pressure inlet and metering-valve connector. Similar-looking CP4 pumps can have different calibration, rotation, drive arrangements or control valves.

A new aftermarket pump normally does not require an old-core return. It must be supplied in standard packing and must not use Bo-sch Genuine, Cum-mins Genuine or factory-remanufactured wording.

Product Specifications

Product Advantages

• Cost-effective CP4N1 pump replacement
• Suitable for matched Cum-mins 3.8L applications
• Searchable through Bo-sch and Cum-mins number formats
• Main cross-reference 5303387
• New replacement normally requires no old core
• Standard export packing
• Single-piece and wholesale orders supported
• Pump-number and exterior inspection before shipment

Applications

Application Notice

Do not confirm this pump only by engine or vehicle model.

Please check:

• 0445020517 marking
• Cum-mins number 5303387
• Pump mounting flange
• Drive-end design
• Fuel inlet and outlet positions
• Metering-valve connector
• Engine serial number

Do not automatically include the following as complete-pump replacements:

• 5298424
• 0928400821
• 1462C00992
• 5293310
• B4.5 / ISB4.5
• 6B5.9
• QSX15

Packing And Delivery

Each aftermarket pump is supplied in standard packing with protective inner material and a strong export carton. Fuel ports should remain capped and sealed during storage and shipment.

Aftermarket products should not use original Bo-sch packaging, Cum-mins Genuine wording or remanufactured exchange terminology.

Order Confirmation

Before confirming an aftermarket order, check:

1. Old pump number
2. Cum-mins reference number
3. Engine model
4. Vehicle or equipment model
5. Pump-nameplate photo
6. Full pump photos
7. Metering-valve connector
8. Mounting and drive configuration
9. Required quantity
10. Original, reman or aftermarket requirement

FAQ

What replaces 0 445 020 517?

0445020517 and 0 445 020 517 are compact and formatted versions of the same pump number. A replacement should also match Cum-mins reference 5303387 and the physical pump configuration.

Is 5303387 the same as 0445020517?

5303387 is the strongest Cum-mins cross-reference associated with 0445020517.

Can a new aftermarket pump replace 5303387RX?

It may serve the same application after the original number and pump configuration are confirmed. However, 5303387RX specifically identifies a remanufactured product branch.

Is an old pump core required?

A new aftermarket replacement normally does not require an old core. A remanufactured or exchange pump may require one.

Can the metering valve be purchased separately?

Yes. Bo-sch references 1462C00992 and 0928400821, along with Cum-mins reference 5298424, are commonly associated with the fuel metering valve.