Does BG 205080 replace OE 0 444 023 019?

Yes. BG 205080 is listed against 0 444 023 019 and J0100-1205580. Confirm the number printed on the removed part and any manufacturer supersession before ordering.

Which vehicles does BG 205080 fit?

Recorded coverage includes Bosch and Yuchai. 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 205080.

205080

Urea (AdBlue) Dosing Module for Yuchai Diesel Engine (Chinese Truck) – OE 0 444 023 019

Urea (AdBlue) Dosing Module (OE 0 444 023 019) for Yuchai Diesel Engine (Chinese Truck) SCR/AdBlue aftertreatment systems. Cross-referenced with 1 alternate OE number.

BG Part Number: 205080
Category: DEF Dosing Modules
Application: Yuchai Diesel Engine (Chinese Truck)
Vehicle Manufacturer: Bosch|Yuchai

Applications

Truck

OE Cross References

0 444 023 019
J0100-1205580

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Product Description

This urea (adblue) dosing module is designed as a direct-fit replacement for Yuchai Diesel Engine (Chinese Truck). 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: 0 444 023 019. It also cross-references to OE/aftermarket numbers including J0100-1205580. 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 205080 (OE 0 444 023 019): function on the vehicle

Urea (AdBlue) Dosing Module for Yuchai Diesel Engine (Chinese Truck) – OE 0 444 023 019 is supplied by BEST GROWTH under part number 205080, cross-referenced to OE 0 444 023 019, 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 205080 is built to the position defined by its OE application in truck service on platforms from Bosch and Yuchai. Position, calibration and connector layout are part of the specification, so a part that physically fits is not automatically the correct part.

A dosing module rarely fails alone. Deposits are usually evidence of a temperature or mixing problem that will destroy the replacement unless it is corrected.

Fitment for Bosch and Yuchai and OE cross reference

BG 205080 replaces 2 OE references: 0 444 023 019 and J0100-1205580. Always confirm the number printed on the removed part, including any supersession issued by the vehicle manufacturer.

Recorded vehicle coverage for 205080 includes Bosch and Yuchai, typically on Yuchai Diesel Engine (Chinese Truck). 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 0 444 023 019 and quoting the number on your part lets our technical team confirm the variant before despatch.

Symptoms that lead to replacing 0 444 023 019

These complaints bring a vehicle in with the Bosch and Yuchai def dosing modules under suspicion. None of them prove BG 205080 has failed on its own, which is why the checks below matter before a replacement is ordered.

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
audible ticking absent during a commanded dose

Checks before fitting BG 205080

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

Review exhaust temperature history — cold-side dosing wets the wall and forms deposits.
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.

Quality, packaging and ordering 205080

BG 205080 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 0 444 023 019 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 205080 replace OE 0 444 023 019?: Yes. BG 205080 is listed against 0 444 023 019 and J0100-1205580. Confirm the number printed on the removed part and any manufacturer supersession before ordering.
Which vehicles does BG 205080 fit?: Recorded coverage includes Bosch and Yuchai. 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 205080.