OEX Alternator 12V 70A Bosch Style BXA035

The OEX Alternator BXA035 is a new 12V, 70A unit built in Bosch style for rotating electrical applications. It uses an internal regulator, a twin leg alternator mount, and a 4 groove pulley with a 70mm outside diameter, so the key fitment points are the mounting layout, pulley style, and charging output rather than the brand name alone.

This alternator is listed with an 80mm inside mounting leg measurement, 80mm mount leg thickness, a 178mm mount centre-to-centre dimension, an M8 x 1.25 adjusting hole, and a 10mm pivot hole diameter. Those measurements matter because alternators that look similar can still differ at the mounting ears, shaft size, or pulley alignment.

OEX identifies this unit as suitable for Bosch applications, and the note advises that BXN1231A can be used, with adaptor options to suit HXK-33, HXK-20, and 1287013003. The alternator weighs 8.5kg and is supplied new, which is useful information when comparing replacement units against an existing Bosch-style alternator.

Warranty cover is listed as 3 years for passenger use and 1 year for commercial use. As with any alternator replacement, the safest approach is to check the part number, mounting dimensions, pulley section, and regulator type against the vehicle’s original unit before ordering.

Key Features

• New alternator, not remanufactured
• 12V system
• 70A power rating
• Internal regulator
• Twin leg alternator mount
• 4 groove pulley

Specifications

• Voltage: 12V
• Power rating: 70A
• Part number: BXA035
• Brand: OEX
• Type: Alternator
• Condition: New
• Regulator type: Internal
• Alternator mount: Twin leg

Compatible applications provided

• Datsun Sunny
• Datsun Sunny 1977 to 1983
• HDT Brock 1988
• Holden Calais 1986 to 1988
• Holden Commodore 1986 to 1988
• Nissan Bluebird 1985 to 1986
• Nissan Cabstar 1983 to 1988 and 1991 to 1992

Application and Buying Notes

Use the part number BXA035 first, then compare the mounting and pulley details. This alternator is a 12V, 70A Bosch style unit with an internal regulator, twin leg mount, 4 groove pulley, and a 70mm pulley outside diameter, so matching only the appearance is not enough.

Check the mounting measurements on the vehicle before purchase: 80mm inside mounting legs, 80mm mount leg thickness, 178mm centre-to-centre mounting, a 10mm pivot hole, and an M8 x 1.25 adjusting hole. These are the dimensions that determine whether the alternator will sit and tension correctly in the bracket.

The listed fitment includes Datsun Sunny, Holden Calais, Holden Commodore, HDT Brock, Nissan Bluebird, and Nissan Cabstar applications, but those names cover more than one engine and bracket combination. Confirm the original alternator details on the vehicle, especially if your car has been changed, repaired, or fitted with non-standard brackets or pulleys.

The note also states that BXN1231A can be used and that adaptors suit HXK-33, HXK-20, and 1287013003. If you are cross-referencing an existing alternator or planning to use adaptor hardware, check those identifiers carefully so the replacement matches the existing mounting arrangement.

Because this is a new unit weighing 8.5kg, it is sensible to compare the old alternator side by side where possible. That helps verify the shaft dimension, pulley section, regulator type, and the way the twin leg mount lines up before the vehicle is reassembled.

Warranty cover is listed separately for passenger and commercial use, so it is worth confirming how the vehicle will be used before purchase. That keeps expectations clear on the applicable warranty period and reduces confusion later if the alternator is going into a commercial application.

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 BXA035 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 80mm, Mount Leg Thickness 80mm, Pivot Hole Diameter 10, Pulley Outside Diameter 70mm, Regulator Type Internal, Voltage 12, Alternator Mount Twin Leg.

Additional published details for cross-checking include New / Reman. New, Weight 8.5kg, Product Group 1 ROTATING ELECTRICAL, Part No. BXA035, Brand OEX, Description OEX Alternator 12V 70A Bosch Style, Adjusting Hole Diameter M8 x 1.25, Mount Hole Diameter 80, Pin Code IR110, Power Rating (Amp) 70.

OEX Alternator 12V 70A Bosch Style. Part number BXA035 should be checked first. Listed voltage is 12. Listed output rating is 70. 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 4 Groove. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number BXA035, 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 using part number BXA035, the Bosch style application, and the listed mounting and pulley measurements before ordering. Vehicle names are provided as application guidance only, and final compatibility should be checked against the original alternator and bracket dimensions.

FAQ

What is the part number for this alternator?

The part number is BXA035.

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 70A power rating.

Does it use an internal or external regulator?

It uses an internal regulator.

What pulley type is listed?

It has a 4 groove pulley with a 70mm outside diameter.

What should I check before buying?

Check the part number, Bosch style application, twin leg mounting, 178mm mount centre-to-centre, 80mm mounting leg measurements, and the 4 groove pulley arrangement against the original unit.