OEX Alternator 12V 120A Bosch Style BXA031

The OEX Alternator BXA031 is a new 12V unit with a 120A power rating, Bosch style fitment, and an internal regulator. It is supplied as an alternator each, with a twin leg mount, 52mm inside mounting legs, a 10mm pivot hole diameter, and an M8x1.25 adjusting hole to assist with installation checks before ordering.

This unit uses a 6 groove pulley with a 65mm outside diameter and has a mount centre to centre measurement of 170mm. It is listed with a pin code of IR49 and a weight of 6.16kg, so matching the physical layout to the vehicle’s existing alternator is an important step when confirming suitability.

OEX states that its products are sourced from market leading original equipment manufacturers and aftermarket suppliers, and that production is supported by ISO9001 certified factories. The alternator is backed by a 3 year passenger / 1 year commercial warranty, which gives buyers a clear warranty basis when selecting a replacement rotating electrical component.

Key Features

• New alternator, not remanufactured
• 12V output with 120A power rating
• Bosch style unit
• Internal regulator
• Twin leg mount arrangement
• 6 groove pulley

Specifications

• Brand: OEX
• Part No.: BXA031
• Product type: Alternator
• Voltage: 12V
• Power rating: 120A
• Unit of measure: Each
• New / Reman.: New
• Regulator type: Internal

Verified fitment applications

• Holden Vectra
• Holden Vectra 2000
• Holden Vectra 2001
• Holden Vectra 2002
• Mitsubishi Challenger
• Mitsubishi Challenger 1997
• Mitsubishi Challenger 1998
• Mitsubishi Challenger 1999

Application and Buying Notes

When comparing this alternator to the one already fitted to the vehicle, start with the part number BXA031, the Bosch style description, and the physical measurements. The 12V, 120A specification, twin leg mount, 52mm inside mounting legs, 10mm pivot hole, and M8x1.25 adjusting hole all need to align with the existing unit and mounting points before purchase.

The pulley details are just as important. This alternator uses a 6 groove pulley with a 65mm outside diameter, so the belt type and pulley size should be checked against the vehicle’s current setup. The mount centre to centre dimension is 170mm, which is another useful confirmation point when comparing against the old alternator.

This unit is listed as suitable for Bosch applications and carries pin code IR49. If the vehicle has been altered, fitted with a different bracket, or previously repaired with a non-standard alternator, it is worth checking the mounting legs, pulley section, and regulator arrangement carefully before ordering. The note also indicates BXM1348 (108Amp) can be used, with adaptor options to suit HXK-32 and HXK-24, so there are related application details to consider where a direct replacement is not the only option.

For warranty and duty cycle context, OEX lists a 3 year passenger warranty and 1 year commercial warranty. That makes the intended vehicle use relevant when selecting the part. A passenger vehicle and a commercial vehicle may have different warranty coverage under the same part number, so it is sensible to confirm how the vehicle is used as well as whether the alternator dimensions and connector details match.

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 BXA031 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, Inside Mounting Legs 52mm, Pivot Hole Diameter 10, Pulley Outside Diameter 65mm, Regulator Type Internal, Voltage 12, Alternator Mount Twin Leg, New / Reman. New.

Additional published details for cross-checking include Product Group 2 ALTERNATORS, Part No. BXA031, Brand OEX, Description OEX Alternator 12V 120A Bosch Style, Adjusting Hole Diameter M8x1.25, Pin Code IR49, Power Rating (Amp) 120, Pulley Section 6 Groove, Suits Unit Make Bosch.

OEX Alternator 12V 120A Bosch Style. Part number BXA031 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 Twin 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 BXA031, 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 HOLDEN VECTRA, HOLDEN VECTRA 2000, HOLDEN VECTRA 2001, HOLDEN VECTRA 2002, MITSUBISHI CHALLENGER, MITSUBISHI CHALLENGER 1997. 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: Confirm compatibility by matching the part number BXA031, the Bosch style application, and the listed mounting and pulley measurements against the existing alternator before ordering. If the vehicle uses a different mounting arrangement, pulley profile, or adaptor requirement, check those details carefully with the vehicle application and your current unit.

FAQ

What is the part number for this alternator?

The part number is BXA031.

Is this alternator new or remanufactured?

It is listed as new.

What voltage and output does it have?

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

What type of regulator does it use?

It uses an internal regulator.

What pulley setup does it have?

It has a 6 groove pulley with a 65mm outside diameter.

Which vehicles are listed as fitment applications?

Verified applications include Holden Vectra and Mitsubishi Challenger, with listed year coverage for Holden Vectra 2000 to 2002 and Mitsubishi Challenger 1997 to 2007.