Does BG 205078 replace OE 0444023046?

Yes. BG 205078 is listed against 0444023046, 21161869, 21234243 and 0 444 023 029. Confirm the number printed on the removed part and any manufacturer supersession before ordering.

Which vehicles does BG 205078 fit?

Recorded coverage includes Volvo. It is supplied as a direct-fit aftermarket def dosing modules. Adaptation, reset or relearn procedures required by the vehicle manufacturer still apply after installation.

Does this fault code always mean the def dosing modules 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 205078.

205078

Urea (AdBlue) Dosing Module for Volvo FH / FM / FMX – OE 0444023046

Urea (AdBlue) Dosing Module (OE 0444023046) for Volvo FH / FM / FMX SCR/AdBlue aftertreatment systems. Cross-referenced with 3 alternate OE numbers.

BG Part Number: 205078
Category: DEF Dosing Modules
Application: Volvo FH|FM|FMX
Vehicle Manufacturer: Volvo

Applications

Truck

OE Cross References

0444023046
21161869
21234243
0 444 023 029

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Product Description

This urea (adblue) dosing module is designed as a direct-fit replacement for Volvo FH / FM / FMX. It meters precise doses of AdBlue / Diesel Exhaust Fluid (DEF) into the exhaust stream as part of the vehicle's Selective Catalytic Reduction (SCR) aftertreatment system, converting NOx emissions into harmless nitrogen and water vapor to help the engine meet its emission standard. Primary OE reference number: 0444023046. It also cross-references to OE/aftermarket numbers including 21161869, 21234243, 0 444 023 029. Manufactured by BG Brand (Wenzhou Best Growth IE Co., Ltd.) to OE-equivalent fit, form and function, this part is tested for reliable sealing and dosing accuracy, offering fleets, workshops and parts distributors a quality-assured alternative to OEM pricing for scheduled SCR system maintenance and repair.

Vehicle manufacturer names, logos and OE reference numbers are used for identification and compatibility purposes only. BEST GROWTH products are independent aftermarket products and are not manufactured, sponsored or endorsed by the respective vehicle manufacturers.

BG 205078 (OE 0444023046): function on the vehicle

Urea (AdBlue) Dosing Module for Volvo FH / FM / FMX – OE 0444023046 is supplied by BEST GROWTH under part number 205078, cross-referenced to OE 0444023046, as a direct-fit aftermarket def dosing modules. In service it meters DEF under pump pressure through a solenoid injector into the hot exhaust pipe, with a cooling circuit or heat shield keeping the injector body below its thermal limit between doses.

BG 205078 is built to the position defined by its OE application in truck service on the platform from Volvo. Position, calibration and connector layout are part of the specification, so a part that physically fits is not automatically the correct part.

Seal and gasket condition at the exhaust interface is part of the repair: a leaking joint cools the spray zone and promotes crystallisation.

Fitment for Volvo and OE cross reference

BG 205078 replaces 4 OE references: 0444023046, 21161869, 21234243 and 0 444 023 029. Always confirm the number printed on the removed part, including any supersession issued by the vehicle manufacturer.

Recorded vehicle coverage for 205078 includes Volvo, typically on Volvo FH|FM|FMX. 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 0444023046 and quoting the number on your part lets our technical team confirm the variant before despatch.

Symptoms that lead to replacing 0444023046

These complaints bring a vehicle in with the Volvo def dosing modules under suspicion. None of them prove BG 205078 has failed on its own, which is why the checks below matter before a replacement is ordered.

deposits inside the mixer restricting exhaust flow
white urea crystallisation around the dosing point or mixer
low dosing pressure or pressure-build-up fault codes
SCR low-conversion codes with confirmed in-spec DEF
coolant or DEF weeping at the module interface

Checks before fitting BG 205078

Aftertreatment faults are usually system faults. Working through these checks prevents a repeat failure after the new def dosing modules is fitted.

Check the cooling circuit or heat shield is intact before fitting a replacement.
Clean or replace the mixer if crystallisation is already established, or the new module will block too.
Verify commanded versus actual dosing pressure during an active dose, not at rest.
Run a quantity test and inspect the spray pattern rather than judging the injector by appearance.
Confirm the purge cycle completes at shutdown; skipped purges cause freeze damage.

Quality, packaging and ordering 205078

BG 205078 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 0444023046 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 205078 replace OE 0444023046?: Yes. BG 205078 is listed against 0444023046, 21161869, 21234243 and 0 444 023 029. Confirm the number printed on the removed part and any manufacturer supersession before ordering.
Which vehicles does BG 205078 fit?: Recorded coverage includes Volvo. It is supplied as a direct-fit aftermarket def dosing modules. Adaptation, reset or relearn procedures required by the vehicle manufacturer still apply after installation.
Does this fault code always mean the def dosing modules 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 205078.