Urea (AdBlue) Dosing Module for Citroën / DS BlueHDi Applications: C4, C5, DS4, DS5, Jumper III, Jumpy III,... – OE 9801187080

BG 205106 (OE 9801187080): function on the vehicle

Urea (AdBlue) Dosing Module for Citroën / DS BlueHDi Applications: C4, C5, DS4, DS5, Jumper III, Jumpy III,... – OE 9801187080 is supplied by BEST GROWTH under part number 205106, cross-referenced to OE 9801187080, 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 205106 is built to the position defined by its OE application in passenger car and light commercial vehicle service on platforms from Psa, (citroën, DS, Peugeot, Fiat and Toyota. 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 Psa, (citroën and DS and OE cross reference

BG 205106 replaces 4 OE references: 9801187080, 3639255, G309B02552 and 0003639255. Always confirm the number printed on the removed part, including any supersession issued by the vehicle manufacturer.

Recorded vehicle coverage for 205106 includes Psa, (citroën, DS, Peugeot, Fiat and Toyota, typically on Citroën / DS BlueHDi Applications: C4, C5, DS4, DS5, Jumper III, Jumpy III, SpaceTourer DS 4 / DS 5 / DS 7 Crossback BlueHDi Fiat Scudo 1.5 / 2.0 Multijet PEUGEOT 3008 / 308 / 5008 / 508 / BOXER / EXPERT / TRAVELLER TOYOTA PROACE Bus. 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 9801187080 and quoting the number on your part lets our technical team confirm the variant before despatch.

Symptoms that lead to replacing 9801187080

These complaints bring a vehicle in with the Psa and (citroën def dosing modules under suspicion. None of them prove BG 205106 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 205106

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 205106

BG 205106 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 9801187080 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 205106 replace OE 9801187080?

Yes. BG 205106 is listed against 9801187080, 3639255, G309B02552 and 0003639255. Confirm the number printed on the removed part and any manufacturer supersession before ordering.

Which vehicles does BG 205106 fit?

Recorded coverage includes Psa, (citroën, DS and Peugeot. 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 205106.