Does BG 205093 replace OE A0001405439?

Yes. BG 205093 is listed against A0001405439, A0001402339, A0001402539, A0001403339, A0001403439, A0001403939, A0001404839 and A0001405239. Confirm the number printed on the removed part and any manufacturer supersession before ordering.

Which vehicles does BG 205093 fit?

Recorded coverage includes Mercedes-Benz. 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 205093.

205093

Urea (AdBlue) Dosing Module for Mercedes-Benz Actros / Arocs / Antos / Atego – OE A0001405439

Urea (AdBlue) Dosing Module (OE A0001405439) for Mercedes-Benz Actros / Arocs / Antos / Atego SCR/AdBlue aftertreatment systems. Cross-referenced with 8 alternate OE numbers.

BG Part Number: 205093
Category: DEF Dosing Modules
Application: Mercedes-Benz Actros|Arocs|Antos|Atego
Vehicle Manufacturer: Mercedes-Benz

Applications

Truck

OE Cross References

A0001405439
A0001402339
A0001402539
A0001403339
A0001403439
A0001403939
A0001404839
A0001405239
A0001405339

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Product Description

This urea (adblue) dosing module is designed as a direct-fit replacement for Mercedes-Benz Actros / Arocs / Antos / Atego. 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: A0001405439. It also cross-references to OE/aftermarket numbers including A0001402339, A0001402539, A0001403339, A0001403439, A0001403939, A0001404839 and 2 more. 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 205093 (OE A0001405439): function on the vehicle

Urea (AdBlue) Dosing Module for Mercedes-Benz Actros / Arocs / Antos / Atego – OE A0001405439 is supplied by BEST GROWTH under part number 205093, cross-referenced to OE A0001405439, 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 205093 is built to the position defined by its OE application in truck service on the platform from Mercedes-Benz. 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 Mercedes-Benz and OE cross reference

BG 205093 replaces 9 OE references: A0001405439, A0001402339, A0001402539, A0001403339, A0001403439, A0001403939, A0001404839, A0001405239 and A0001405339. Always confirm the number printed on the removed part, including any supersession issued by the vehicle manufacturer.

Recorded vehicle coverage for 205093 includes Mercedes-Benz, typically on Mercedes-Benz Actros|Arocs|Antos|Atego. 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 A0001405439 and quoting the number on your part lets our technical team confirm the variant before despatch.

Symptoms that lead to replacing A0001405439

These complaints bring a vehicle in with the Mercedes-Benz def dosing modules under suspicion. None of them prove BG 205093 has failed on its own, which is why the checks below matter before a replacement is ordered.

audible ticking absent during a commanded dose
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

Checks before fitting BG 205093

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

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.
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.

Quality, packaging and ordering 205093

BG 205093 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 A0001405439 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 205093 replace OE A0001405439?: Yes. BG 205093 is listed against A0001405439, A0001402339, A0001402539, A0001403339, A0001403439, A0001403939, A0001404839 and A0001405239. Confirm the number printed on the removed part and any manufacturer supersession before ordering.
Which vehicles does BG 205093 fit?: Recorded coverage includes Mercedes-Benz. 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 205093.