Does BG 205038 replace OE 0004900713?

Yes. BG 205038 is listed against 0004900713 and 0 444 021 033. Confirm the number printed on the removed part and any manufacturer supersession before ordering.

Which vehicles does BG 205038 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 205038.

205038

Urea (AdBlue) Dosing Module for Mercedes-Benz CLS/E-Class/X-Class Diesel NISSAN – OE 0004900713

Urea (AdBlue) Dosing Module (OE 0004900713) for Mercedes-Benz CLS/E-Class/X-Class Diesel NISSAN SCR/AdBlue aftertreatment systems. Cross-referenced with 1 alternate OE number.

BG Part Number: 205038
Category: DEF Dosing Modules
Application: Mercedes-Benz CLS/E-Class/X-Class Diesel NISSAN
Vehicle Manufacturer: MERCEDES-BENZ

Applications

OE Cross References

0004900713
0 444 021 033

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Product Description

This urea (adblue) dosing module is designed as a direct-fit replacement for Mercedes-Benz CLS/E-Class/X-Class Diesel NISSAN. 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: 0004900713. It also cross-references to OE/aftermarket numbers including 0 444 021 033. 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 workshops, parts distributors and vehicle owners 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 205038 (OE 0004900713): function on the vehicle

Urea (AdBlue) Dosing Module for Mercedes-Benz CLS/E-Class/X-Class Diesel NISSAN – OE 0004900713 is supplied by BEST GROWTH under part number 205038, cross-referenced to OE 0004900713, as a direct-fit aftermarket def dosing modules. In service it is the final actuator of the SCR loop: whatever the controller calculates from the NOx signal is only delivered as accurately as this module sprays it.

BG 205038 is built to the position defined by its OE application in passenger car and light commercial vehicle 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 205038 replaces 2 OE references: 0004900713 and 0 444 021 033. Always confirm the number printed on the removed part, including any supersession issued by the vehicle manufacturer.

Recorded vehicle coverage for 205038 includes Mercedes-Benz, typically on Mercedes-Benz CLS/E-Class/X-Class Diesel NISSAN. 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 0004900713 and quoting the number on your part lets our technical team confirm the variant before despatch.

Symptoms that lead to replacing 0004900713

These complaints bring a vehicle in with the Mercedes-Benz def dosing modules under suspicion. None of them prove BG 205038 has failed on its own, which is why the checks below matter before a replacement is ordered.

SCR low-conversion codes with confirmed in-spec DEF
coolant or DEF weeping at the module interface
audible ticking absent during a commanded dose
deposits inside the mixer restricting exhaust flow
white urea crystallisation around the dosing point or mixer

Checks before fitting BG 205038

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 205038

BG 205038 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 0004900713 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 205038 replace OE 0004900713?: Yes. BG 205038 is listed against 0004900713 and 0 444 021 033. Confirm the number printed on the removed part and any manufacturer supersession before ordering.
Which vehicles does BG 205038 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 205038.