Does BG 205063 replace OE R2AX202F0?

Yes. BG 205063 is listed against R2AX202F0, 3A6E13250 and 0 444 021 012. Confirm the number printed on the removed part and any manufacturer supersession before ordering.

Which vehicles does BG 205063 fit?

Recorded coverage includes Mazda. 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 205063.

205063

Urea (AdBlue) Dosing Module for Mazda CX-7 2.2 MZR-CD – OE R2AX202F0

Urea (AdBlue) Dosing Module (OE R2AX202F0) for Mazda CX-7 2.2 MZR-CD SCR/AdBlue aftertreatment systems. Cross-referenced with 2 alternate OE numbers.

BG Part Number: 205063
Category: DEF Dosing Modules
Application: Mazda CX-7 2.2 MZR-CD
Vehicle Manufacturer: MAZDA

Applications

Passenger Car

OE Cross References

R2AX202F0
3A6E13250
0 444 021 012

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Product Description

This urea (adblue) dosing module is designed as a direct-fit replacement for Mazda CX-7 2.2 MZR-CD. 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: R2AX202F0. It also cross-references to OE/aftermarket numbers including 3A6E13250, 0 444 021 012. 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 205063 (OE R2AX202F0): function on the vehicle

Urea (AdBlue) Dosing Module for Mazda CX-7 2.2 MZR-CD – OE R2AX202F0 is supplied by BEST GROWTH under part number 205063, cross-referenced to OE R2AX202F0, 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 205063 is built to the position defined by its OE application in passenger car service on the platform from Mazda. 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 Mazda and OE cross reference

BG 205063 replaces 3 OE references: R2AX202F0, 3A6E13250 and 0 444 021 012. Always confirm the number printed on the removed part, including any supersession issued by the vehicle manufacturer.

Recorded vehicle coverage for 205063 includes Mazda, typically on Mazda CX-7 2.2 MZR-CD. 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 R2AX202F0 and quoting the number on your part lets our technical team confirm the variant before despatch.

Symptoms that lead to replacing R2AX202F0

These complaints bring a vehicle in with the Mazda def dosing modules under suspicion. None of them prove BG 205063 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 205063

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

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.
Run a quantity test and inspect the spray pattern rather than judging the injector by appearance.

Quality, packaging and ordering 205063

BG 205063 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 R2AX202F0 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 205063 replace OE R2AX202F0?: Yes. BG 205063 is listed against R2AX202F0, 3A6E13250 and 0 444 021 012. Confirm the number printed on the removed part and any manufacturer supersession before ordering.
Which vehicles does BG 205063 fit?: Recorded coverage includes Mazda. 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 205063.