High-Pressure Fuel Pump 0445020023 | Fit for MAN D2066

BG PMP-0445020023 (OE 0445020023): function on the vehicle

High-Pressure Fuel Pump 0445020023 | Fit for MAN D2066 is supplied by BEST GROWTH under part number PMP-0445020023, cross-referenced to OE 0445020023, as a direct-fit aftermarket diesel fuel pumps. In service it sits inside the aftertreatment control loop, so its condition is judged by system behaviour — dosing, regeneration and conversion efficiency — rather than by a single measurement.

BG PMP-0445020023 is built to the position defined by its OE application on the platform from MAN. Position, calibration and connector layout are part of the specification, so a part that physically fits is not automatically the correct part.

Aftertreatment components are specified as a set. Matching the OE number is more reliable than matching appearance.

Fitment for MAN and OE cross reference

BG PMP-0445020023 replaces 3 OE references: 0445020023, 51111037678 and 51111037738. Always confirm the number printed on the removed part, including any supersession issued by the vehicle manufacturer.

Recorded vehicle coverage for PMP-0445020023 includes MAN, typically on Fit for MAN D2066 10.5L diesel applications. Coverage lists are a starting point for identification, not a substitute for checking the OE number on the vehicle.

Where several OE numbers appear against one BG reference, they are supersessions or regional variants of the same specification. Ordering by 0445020023 and quoting the number on your part lets our technical team confirm the variant before despatch.

Symptoms that lead to replacing 0445020023

These complaints bring a vehicle in with the MAN diesel fuel pumps under suspicion. None of them prove BG PMP-0445020023 has failed on its own, which is why the checks below matter before a replacement is ordered.

• abnormal DEF consumption or regeneration behaviour
• intermittent faults that appear only once the system is hot
• aftertreatment fault codes that return after a repair
• reduced engine performance or inducement

Checks before fitting BG PMP-0445020023

Aftertreatment faults are usually system faults. Working through these checks prevents a repeat failure after the new diesel fuel pumps is fitted.

• Check the harness, connector and mounting position before replacing the component.
• Verify the repair with a monitored drive cycle rather than a code clear.
• Confirm the application before ordering: similar-looking parts differ electrically and functionally.

Quality, packaging and ordering PMP-0445020023

BG PMP-0445020023 is manufactured and tested to aftermarket replacement standards, with electrical, leakage and functional testing carried out before packing. Bulk and retail packaging, private-label cartons and customer-specific labelling are available for distributors and workshop groups.

Send OE 0445020023 or the number printed on your part, the engine code and the vehicle identification number with your enquiry, and our technical team will confirm the correct reference, current stock position and lead time before you commit to an order.

Frequently asked questions

Does BG PMP-0445020023 replace OE 0445020023?

Yes. BG PMP-0445020023 is listed against 0445020023, 51111037678 and 51111037738. Confirm the number printed on the removed part and any manufacturer supersession before ordering.

Which vehicles does BG PMP-0445020023 fit?

Recorded coverage includes MAN. It is supplied as a direct-fit aftermarket diesel fuel pumps. Adaptation, reset or relearn procedures required by the vehicle manufacturer still apply after installation.

Does this fault code always mean the diesel fuel pumps has failed?

No. Exhaust leaks, wiring and connector damage, reductant quality, dosing performance and upstream engine faults can all produce the same codes. Validate those inputs before replacing BG PMP-0445020023.