Urea (AdBlue) Dosing Module for Renault Trucks Volvo FH / FM – OE 0444023040

BG 205024 (OE 0444023040): function on the vehicle

Urea (AdBlue) Dosing Module for Renault Trucks Volvo FH / FM – OE 0444023040 is supplied by BEST GROWTH under part number 205024, cross-referenced to OE 0444023040, as a direct-fit aftermarket def dosing modules. In service it atomizes diesel exhaust fluid into the exhaust stream ahead of the SCR catalyst. Spray quality, dosing quantity and purge behaviour decide whether urea converts to ammonia or builds solid deposits.

BG 205024 is built to the position defined by its OE application in truck service on platforms from Renault Trucks and 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 Renault Trucks and Volvo and OE cross reference

BG 205024 replaces 13 OE references: 0444023040, 0 444 023 040, 0 444 023 056, 7421201002, 74 21 738 118, 74 21 234 240, 74 21 201 002, 7421234240, 7421738118 and 21234240. Always confirm the number printed on the removed part, including any supersession issued by the vehicle manufacturer.

Recorded vehicle coverage for 205024 includes Renault Trucks and Volvo, typically on Renault Trucks Volvo FH|FM. 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 0444023040 and quoting the number on your part lets our technical team confirm the variant before despatch.

Symptoms that lead to replacing 0444023040

These complaints bring a vehicle in with the Renault Trucks and Volvo def dosing modules under suspicion. None of them prove BG 205024 has failed on its own, which is why the checks below matter before a replacement is ordered.

• 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
• low dosing pressure or pressure-build-up fault codes

Checks before fitting BG 205024

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

• 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.
• Verify commanded versus actual dosing pressure during an active dose, not at rest.

Quality, packaging and ordering 205024

BG 205024 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 0444023040 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 205024 replace OE 0444023040?

Yes. BG 205024 is listed against 0444023040, 0 444 023 040, 0 444 023 056, 7421201002, 74 21 738 118, 74 21 234 240, 74 21 201 002 and 7421234240. Confirm the number printed on the removed part and any manufacturer supersession before ordering.

Which vehicles does BG 205024 fit?

Recorded coverage includes Renault Trucks and 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 205024.