This is the Bosch 044404229Z, a new DEF supply module made by Bosch. It is the pump unit that draws diesel exhaust fluid from the tank, builds pressure and feeds the dosing module. This one is the 24 volt version with a check valve. It crosses to Cummins 2871880, 2880158 and 4387658 and to DAF 1819797, and takes the place of the earlier Bosch 0444042004, 0444042014 and 0444042137.

A supply module that has failed usually shows up as a DEF pressure or DEF dosing fault code, a low DEF pressure reading, a pump that will not prime or purge, or crystallized fluid around the module. The same codes can come from a plugged filter in the module, a frozen or kinked DEF line, bad fluid or a stuck dosing valve, so check those before replacing the pump. This is a replacement part for the factory selective catalytic reduction (SCR) system.

Specifications

Fits / Applications

• Cummins engines with a Bosch DEF system on 24 V that use supply module 2871880, 2880158 or 4387658 (also Cummins A028Y793)
• DAF CF and XF trucks with part number 1819797
• Order by the number on the old pump and the system voltage. We do not list Cummins engine models because the catalogs do not name them.

Flush or replace crystallized DEF lines, fit clean fluid and check the tank pickup and the heater lines before running the new pump. Clear the fault codes and run the system’s prime and purge test after fitting.

Part Numbers & Cross Reference

Bosch 044404229Z  ·  Bosch 0444042004  ·  Bosch 0444042014  ·  Bosch 0444042137  ·  Bosch 098644D263  ·  Bosch 098644D209  ·  Cummins 2871880  ·  Cummins 2880158  ·  Cummins 4387658  ·  Cummins A028Y793  ·  DAF 1819797

Cross-reference numbers can change with engine serial, build year and emissions tier, so treat this list as a starting point. Send us your engine serial number and we will confirm the exact match against your build before anything ships. That check is free and takes a few minutes.

Frequently Asked Questions

Is the 044404229Z a 12 V or 24 V DEF pump?

It is the 24 V supply module with check valve. The 12 V version with check valve is the Bosch 044404229X, and the two do not interchange.

What numbers does the 044404229Z replace?

Bosch 0444042004, 0444042014 and 0444042137, Cummins 2871880, 2880158, 4387658 and A028Y793, and DAF 1819797.

Is it the same as the Bosch 0444042180?

No. The 0444042180 is a different supply module that crosses to Cummins 4387305 and 5418806. Order the number that is on your old pump.

Is this a new or remanufactured DEF pump?

It is a new supply module made by Bosch, not a rebuild. Call 530-668-0818 with your engine serial number if you want us to confirm the match.

Related Parts

• Cummins ISB & QSB 6.7L Medium-Duty Injector | 0986435697 | Bosch Authorized Remanufactured by VFI
• 2010-2016 Cummins ISB 6.7 Midrange (Rear Gear) CP3 Injection Pump | Bosch 0986437370 Remanufactured
• Cummins ISL & QSL 8.9L, Case IH, New Holland & Komatsu Fuel Injector | Bosch 0445120236 New (Cummins 5263308)
• Cummins ISX15 EPA10 XPI Common-Rail Fuel Injector | Alliant Power AP55101 Remanufactured

Why Buy From Valley Fuel Injection

We are a diesel fuel-injection and turbocharger shop in Woodland, CA, rebuilding pumps, injectors and turbos on our own benches since 1993, not a drop-ship storefront. When you call, you talk to the people who test these units. We verify fitment against your engine serial, VIN or build date before anything ships, so the right part arrives the first time.