Does BG 2059004 replace OE EM2408IJ?

Yes. BG 2059004 is listed against EM2408IJ and A0004901113. Confirm the number printed on the removed part and any manufacturer supersession before ordering.

Which vehicles does BG 2059004 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 2059004.

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2059004

Urea (AdBlue) Dosing Module for Mercedes-Benz E-Class / GL-Class / ML-Class – OE EM2408IJ

Urea (AdBlue) Dosing Module (OE EM2408IJ) for Mercedes-Benz E-Class / GL-Class / ML-Class SCR/AdBlue aftertreatment systems. Cross-referenced with 1 alternate OE number.

BG Part Number: 2059004
Category: DEF Dosing Modules
Application: Mercedes-Benz E-Class / GL-Class / ML-Class
Vehicle Manufacturer: MERCEDES-BENZ

Applications

Passenger Car

OE Cross References

EM2408IJ
A0004901113

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Product Description

This urea (adblue) dosing module is designed as a direct-fit replacement for Mercedes-Benz E-Class / GL-Class / ML-Class. 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: EM2408IJ. It also cross-references to OE/aftermarket numbers including A0004901113. 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 2059004 (OE EM2408IJ): function on the vehicle

Urea (AdBlue) Dosing Module for Mercedes-Benz E-Class / GL-Class / ML-Class – OE EM2408IJ is supplied by BEST GROWTH under part number 2059004, cross-referenced to OE EM2408IJ, 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 2059004 is built to the position defined by its OE application in passenger car 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.

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 Mercedes-Benz and OE cross reference

BG 2059004 replaces 2 OE references: EM2408IJ and A0004901113. Always confirm the number printed on the removed part, including any supersession issued by the vehicle manufacturer.

Recorded vehicle coverage for 2059004 includes Mercedes-Benz, typically on Mercedes-Benz E-Class / GL-Class / ML-Class. 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 EM2408IJ and quoting the number on your part lets our technical team confirm the variant before despatch.

Symptoms that lead to replacing EM2408IJ

These complaints bring a vehicle in with the Mercedes-Benz def dosing modules under suspicion. None of them prove BG 2059004 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 2059004

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

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.
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.

Quality, packaging and ordering 2059004

BG 2059004 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 EM2408IJ 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 2059004 replace OE EM2408IJ?: Yes. BG 2059004 is listed against EM2408IJ and A0004901113. Confirm the number printed on the removed part and any manufacturer supersession before ordering.
Which vehicles does BG 2059004 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 2059004.