OEX Alternator 12V 120A Bosch Style BXA083

The OEX Alternator BXA083 is a new 12V, 120A unit in Bosch style, suited to Bosch applications and identified with pin code IR203. It uses an internal regulator, a 7 groove pulley, and a twin leg alternator mount, which are the key matching points to check before ordering.

This alternator carries an inside mounting leg width of 82mm, a mount centre to centre measurement of 158mm, and a pivot hole diameter of M10x1.25 / 10.5. The adjusting hole diameter is 10.5mm, and the pulley outside diameter is 60mm, so it is important to compare these dimensions with the unit being replaced.

At 5.8kg, this is a rotating electrical component supplied as a new unit, not a remanufactured one. OEX lists a 3 year passenger and 1 year commercial warranty, which may be relevant depending on how the vehicle is used and how the part is installed.

Key Features

• 12V alternator rated at 120A
• Bosch style unit
• Internal regulator
• 7 groove pulley
• Twin leg mount
• New unit

Specifications

• Brand: OEX
• Part No.: BXA083
• Product type: Alternator
• Power rating: 120A
• Voltage: 12V
• Suits unit make: Bosch
• Pulley outside diameter: 60mm
• Pulley section: 7 groove

Fitment guidance

• Fitment information provided references Nissan and Nissan Navara applications, including Navara model years 2015, 2016, 2017, 2018, 2019 and 2020.
• Confirm the replacement alternator matches the Bosch style unit, internal regulator, twin leg mount, 7 groove pulley, and the recorded dimensions before purchase.
• Use the part number BXA083 and the pin code IR203 as the main cross-check points when comparing the old unit.
• If the removed alternator differs in mounting leg spacing, pulley section, pulley diameter, or regulator type, do not rely on appearance alone.

Application and Buying Notes

Alternators need to match more than just voltage and amperage. This unit is a 12V, 120A Bosch style alternator with an internal regulator, so the replacement should be checked against the vehicle’s original mounting and charging setup as well as the electrical rating.

The critical physical checks for BXA083 are the 82mm inside mounting legs, 158mm mount centre to centre, M10x1.25 / 10.5 pivot hole, 10.5mm adjusting hole, 60mm pulley outside diameter, and 7 groove pulley section. Those measurements are the practical way to confirm whether it will line up correctly in the engine bay.

Because this alternator is listed for Bosch applications and is identified with pin code IR203, matching the part number and connector/application details is the safest approach. A Bosch style alternator can still vary in bracket and pulley configuration, so always compare the old unit before fitting.

The 5.8kg weight and twin leg mount are useful reference points when handling the part and comparing it to the removed unit. If the previous alternator was remanufactured, had a different regulator type, or used a different pulley style, the replacement needs to be checked carefully rather than assumed to be the same.

Warranty coverage is listed as 3 years for passenger use and 1 year for commercial use. That is useful context, but it does not replace the need to verify fitment, especially where the vehicle has been modified, the charging system has been changed, or the original alternator part details are not clear.

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 BXA083 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 82mm, Pivot Hole Diameter M10x1.25 / 10.5, Pulley Outside Diameter 60mm, Regulator Type Internal, Voltage 12, Mount Cnt to Cnt 158mm, Weight 5.8kg.

Additional published details for cross-checking include Product Group 1 ROTATING ELECTRICAL, Part No. BXA083, Brand OEX, Description OEX Alternator 12V 120A Bosch Style, Adjusting Hole Diameter 10.5, Pin Code IR203, Power Rating (Amp) 120, Pulley Section 7 Groove, Suits Unit Make Bosch, Alternator Mount Twin Leg.

OEX Alternator 12V 120A Bosch Style. Part number BXA083 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 7 Groove. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number BXA083, 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 BXA083, IR203, the Bosch style application, and the measured mounting and pulley details against the original alternator before ordering.

FAQ

What type of alternator is this?

It is an OEX alternator, part number BXA083, in Bosch style. It is a new 12V unit rated at 120A and uses an internal regulator.

Does this alternator suit Bosch applications?

Yes. The specification lists it as Bosch style and notes that it suits unit make Bosch. The part number and pin code should still be matched to the vehicle’s original unit.

What pulley does this alternator use?

It uses a 7 groove pulley with a 60mm outside diameter. Those details should be checked against the removed alternator before purchase.

What mounting measurements are listed?

The listed measurements are 82mm inside mounting legs, 158mm mount centre to centre, M10x1.25 / 10.5 pivot hole diameter, and 10.5mm adjusting hole diameter. It is also listed as a twin leg mount.

Is this a new or remanufactured alternator?

This alternator is listed as new, not remanufactured.

What warranty is provided?

OEX lists a 3 year warranty for passenger use and a 1 year warranty for commercial use.