OEX Alternator 12V 120A Bosch Style BXA022

The OEX Alternator BXA022 is a new 12V, 120A unit built in Bosch style for applications that use a Bosch-type alternator arrangement. It is supplied as an each item and uses a single-leg mount with a 56mm mount leg thickness, so matching the physical layout of the existing unit is just as important as matching the part number.

Key dimensions on this alternator include a 156mm mount centre to centre measurement, a 10mm adjusting hole diameter, and a 50mm pulley outside diameter. It also uses a 6 groove pulley and an internal regulator, which are practical checkpoints when comparing the replacement unit to the one being removed.

OEX lists this alternator as a new unit with a 3 year passenger / 1 year commercial warranty. For workshop and retail buyers, the most useful identifiers to confirm before ordering are part number BXA022, pin code IR139, Bosch style suitability, and the 12V 120A electrical rating.

Key Features

• New OEX alternator
• 12V electrical system
• 120A power rating
• Bosch style unit
• Single leg alternator mount
• 6 groove pulley

Specifications

• Brand: OEX
• Product type: Alternator
• Part No.: BXA022
• Voltage: 12V
• Amperage: 120A
• New / remanufactured: New
• Mount type: Single leg
• Mount leg thickness: 56mm

Fitment guidance

• Fitment is referenced against vehicle applications including Audi A4, Citroën Acadiane, Mercedes-Benz C-Class, Mercedes-Benz CLK, Mercedes-Benz M-Class, Mercedes-Benz S-Class, Mercedes-Benz SL, Mercedes-Benz Sprinter 4-T, Mercedes-Benz Viano, and Renault Master.
• Sample application data includes Audi A4 2001 and 2002, Citroën Acadiane 1978 to 1988, Mercedes-Benz C-Class 2001 to 2008, Mercedes-Benz CLK 1997 and 1998, and Renault Master 2004 to 2007.

Application and Buying Notes

Before ordering, compare the removed alternator with BXA022 and check the Bosch style, single-leg mounting layout, 56mm mount leg thickness, and the 156mm mount centre to centre measurement. Those physical details are often the quickest way to avoid ordering the wrong unit when the vehicle may have more than one alternator option.

The electrical rating is 12V and 120A, so it suits vehicles and charging systems that are specified for that output. The pulley is a 6 groove design with a 50mm outside diameter, which needs to match the belt setup already fitted to the vehicle.

The unit uses an internal regulator and is listed with pin code IR139. If the plug, connector style, or control arrangement on the vehicle differs from the removed alternator, confirm the replacement against the original unit before fitting. That is especially important on vehicles where alternator variants can change by engine, build year, or charging system specification.

At 6.6kg, this is not a lightweight small-frame alternator, so handling and mounting alignment matter during installation. If the alternator is being replaced because of charging faults, it is still worth checking belt condition, pulley alignment, and wiring condition before condemning the unit alone.

The safest buying approach is to match part number BXA022 first, then confirm Bosch style compatibility, mounting measurements, pulley configuration, and the vehicle application listed for the specific model and build year. That gives a far better result than relying on vehicle make alone.

Before supply, the safest approach is to confirm the original unit details against the listed part number, voltage, output rating, mounting arrangement, and pulley configuration. That checking process is standard practice in the parts trade because visually similar units can still differ in service-critical ways.

For workshop, fleet, and equipment applications, accurate identification of part number BXA022 helps avoid unnecessary freight, additional labour, and vehicle or machine downtime. Where the application is not straightforward, the original unit, OEM reference, or workshop records should be used as the primary confirmation point.

Relevant published details for this unit include Type ALTERNATOR, Unit of Measure EACH, Warranty 3yr Passenger 1yr Commercial, Mount Leg Thickness 56mm, Power Rating (Amp) 120, Pulley Section 6 Groove, Suits Unit Make Bosch, Alternator Mount Single Leg, New / Reman. New.

Additional published details for cross-checking include Product Group 2 ALTERNATORS, Part No. BXA022, Brand OEX, Description OEX Alternator 12V 120A Bosch Style, Adjusting Hole Diameter 10, Pin Code IR139, Pulley Outside Diameter 50mm, Regulator Type Internal, Voltage 12, Mount Cnt to Cnt 156mm.

OEX Alternator 12V 120A Bosch Style. Part number BXA022 should be checked first. Listed voltage is 12. Listed output rating is 120. These details form the core reference points used by parts interpreters when confirming the correct replacement.

Mount style is Single Leg. Regulator type is Internal. Pulley configuration is 6 Groove. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number BXA022, the normal identification sequence is part number, electrical rating, mounting arrangement, connector or terminal style, and pulley or drive details. Using those checkpoints helps confirm that the listed unit matches the service requirement rather than only looking similar.

For a alternator in workshop, fleet, trade, agricultural, or construction service, the listed voltage 12 and output 120 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Available application references include AUDI A4, AUDI A4 2001, AUDI A4 2002, CITROEN ACADIANE, CITROEN ACADIANE 1978, CITROEN ACADIANE 1979. Even with application listings, final confirmation should still be based on the exact unit being replaced and the service requirements of the vehicle or machine.

Compatibility note: Please confirm fitment with part number BXA022, Bosch style application details, mounting measurements, pulley configuration, and the vehicle’s original alternator before purchase.

FAQ

Is this alternator new or reconditioned?

It is listed as new, not remanufactured.

What voltage and amperage does it have?

It is a 12V alternator with a 120A power rating.

What is the part number?

The part number is BXA022.

What pulley setup does it use?

It uses a 6 groove pulley with a 50mm outside diameter.

Does it have an internal regulator?

Yes. The regulator type is listed as internal.

How should fitment be confirmed before ordering?

Check the part number BXA022, Bosch style suitability, single-leg mount, 56mm mount leg thickness, 156mm mount centre to centre, 10mm adjusting hole, and the vehicle application against the unit being replaced.