OEX Alternator 12V 85A Bosch Style BXA034

The OEX Alternator BXA034 is a 12V, 85A unit in Bosch style, supplied as a new alternator for rotating electrical applications. It uses an internal regulator, a single leg alternator mount, and a pulley with 70mm outside diameter, so the physical layout and mounting points matter when checking replacement suitability.

Key dimensions include a 56mm mount leg thickness, 172mm mount centre-to-centre, a 10mm pivot hole diameter, M8x1.25 adjusting hole thread, and a 17mm shaft dimension. Those measurements are the practical checks that help confirm whether the alternator will physically match the vehicle or application before installation.

This unit is listed under OEX part number BXA034 and suits Bosch unit make. It is supplied as each, weighs 4.98kg, and carries the OEX warranty stated as 3 years for passenger use and 1 year for commercial use. As with any alternator replacement, matching the part number and the mounting and pulley details is the safest way to avoid a mismatch.

Key Features

• 12V alternator with 85A output
• Bosch style replacement
• Internal regulator
• New unit supplied each
• Single leg alternator mount
• OEX part number BXA034

Specifications

• Voltage: 12V
• Power rating: 85A
• Type: Alternator
• Condition: New
• Regulator type: Internal
• Alternator mount: Single leg
• Pulley section: A
• Pulley outside diameter: 70mm

Verified fitment references

• CHAMBERLAIN 306
• CHAMBERLAIN 3380
• CHAMBERLAIN 3380B
• CHAMBERLAIN 4080
• CHAMBERLAIN 4090
• CHAMBERLAIN 4280
• CHAMBERLAIN 4280B
• CHAMBERLAIN 4290

Application and Buying Notes

Before ordering, compare the existing alternator against the key identifiers on this unit: OEX part number BXA034, 12V system voltage, 85A output, Bosch style design, and Bosch unit make. Alternators can look similar but differ in mounting, pulley, regulator, or shaft details, so the physical measurements are just as important as the electrical rating.

The listed mount leg thickness of 56mm, mount centre-to-centre of 172mm, pivot hole diameter of 10mm, and M8x1.25 adjusting hole are the clearest checks for fit. If your vehicle uses a different bracket arrangement or bolt pattern, a visually similar alternator may still be wrong for the application.

The pulley details also matter. This alternator has a 70mm outside diameter pulley and an A section pulley profile, so it is worth confirming the belt setup and pulley match before purchase. If the pulley type, offset, or shaft dimension does not align with the existing unit, installation problems can follow even when the alternator output is correct.

This alternator is supplied as a new unit and weighs 4.98kg. The warranty is listed as 3 years for passenger use and 1 year for commercial use, which is useful when you are selecting a replacement for a daily driver, a fleet vehicle, or a workshop repair. Make sure the application you are replacing is meant to use a Bosch style alternator with an internal regulator and single leg mount.

Fitment references include CHAMBERLAIN, CITROEN DS4, FORD FALCON, HDT CALAIS, HOLDEN BERLINA, HOLDEN CALAIS, HOLDEN CAPRICE, HOLDEN COMMODORE, HOLDEN STATESMAN, HSV CLUBSPORT and HSV COMMODORE. Those names are useful as a guide, but the final check should still be the part number and the measurements on the vehicle currently fitted.

If you are replacing an alternator that has charging issues, do not rely on the old unit’s appearance alone. Confirm the regulator type, pulley section, mount style, and hole dimensions, because these are the features that most often separate one Bosch style alternator from another within the same broad vehicle group.

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 BXA034 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, Pivot Hole Diameter 10, Pulley Outside Diameter 70mm, Regulator Type Internal, Voltage 12, Mount Cnt to Cnt 172mm, Shaft Dimension 17.

Additional published details for cross-checking include Product Group 2 ALTERNATORS, Part No. BXA034, Brand OEX, Description OEX Alternator 12V 85A Bosch Style, Adjusting Hole Diameter M8x1.25, Pin Code IR110, Power Rating (Amp) 85, Pulley Section A, Suits Unit Make Bosch.

OEX Alternator 12V 85A Bosch Style. Part number BXA034 should be checked first. Listed voltage is 12. Listed output rating is 85. 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 A. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number BXA034, 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.

Compatibility note: Confirm fitment by matching OEX part number BXA034, 12V 85A output, Bosch style application, and the mounting and pulley measurements against the unit already fitted to the vehicle. Use the listed application references only as a guide, and verify the physical dimensions before ordering.

FAQ

What is the part number for this alternator?

The OEX part number is BXA034.

Is this alternator new or remanufactured?

It is listed as new.

What voltage and output does it have?

It is a 12V alternator with an 85A power rating.

Does it have an internal regulator?

Yes. The regulator type is internal.

What mounting details should I check?

Check the single leg mount, 56mm mount leg thickness, 172mm mount centre-to-centre, 10mm pivot hole diameter, and M8x1.25 adjusting hole diameter.

What warranty is listed?

The warranty is listed as 3 years for passenger use and 1 year for commercial use.