OEX Alternator 12V 70A Hitachi Style HXA022

The OEX Alternator HXA022 is a 12V, 70A unit set up in Hitachi style, supplied new as an alternator for rotating electrical applications. It uses an internal regulator, a twin leg alternator mount, and a pulley with a 73mm outside diameter and A section. Those details matter when you are matching the replacement to the original unit, especially where mounting points and pulley profile need to line up exactly.

This unit has an inside mounting leg spacing of 82mm, a mount centre to centre measurement of 170mm, a pivot hole diameter of 10mm, and an adjusting hole diameter of M8x1.25. The listed weight is 4.82kg. When comparing against the original alternator, these are the main dimensions that help confirm whether the physical shape and fixing points are the same before installation.

OEX lists this alternator with part number HXA022 and pin code IR49. It is backed by a 3 year passenger / 1 year commercial warranty. The product is described as a Hitachi style alternator, so the most reliable way to check suitability is to compare the part number, mounting style, voltage, amperage, and pulley details with the vehicle’s original unit.

Key Features

• 12V, 70A alternator
• Hitachi style application
• Internal regulator
• Twin leg alternator mount
• New unit, not remanufactured
• 73mm pulley outside diameter

Specifications

• Voltage: 12V
• Power rating: 70A
• Regulator type: Internal
• Alternator mount: Twin leg
• Inside mounting legs: 82mm
• Mount centre to centre: 170mm
• Pivot hole diameter: 10mm
• Adjusting hole diameter: M8x1.25

Fitment notes

• Fitment information includes Holden Rodeo, Nissan Navara, Nissan Terrano II and Toyota Corolla applications.
• The provided fitment data also shows model years across Holden Rodeo 1983 to 1988, Nissan Navara 1988 to 1998, and Toyota Corolla 2001 to 2007.
• Fitment should still be checked against the original alternator by part number and mounting dimensions before purchase.

Application and Buying Notes

For an alternator replacement, the safest comparison points are the part number HXA022, the Hitachi style configuration, and the physical measurements. In this case the unit is 12V and 70A, with an internal regulator, twin leg mount, 82mm inside mounting legs, 170mm mount centre to centre, and a 73mm A section pulley. If any of those points differ from the vehicle’s original alternator, the part may not be a direct match.

The fitment data supplied against this alternator covers Holden Rodeo, Nissan Navara, Nissan Terrano II and Toyota Corolla applications. Even where a vehicle model appears in the list, alternator replacements can vary by engine, build date, charging system, pulley offset, and mounting arrangement. Matching the original unit remains the best way to avoid installation issues.

Weight is listed at 4.82kg, which can be useful when comparing a removed alternator to the replacement. The pivot hole diameter is 10mm and the adjusting hole is M8x1.25, so those fixing details should be checked carefully. If the original alternator uses a different mount style, different hole sizes, or a different pulley section, the safest approach is to confirm compatibility before ordering.

This alternator is sold new and is covered by a 3 year passenger / 1 year commercial warranty. That warranty period is useful to know, but it does not replace fitment checking. The correct practice is to verify the part number, mount type, voltage, amperage, pulley size, and listed application before the part is fitted to the vehicle.

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 HXA022 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 10, Pulley Outside Diameter 73mm, Regulator Type Internal, Voltage 12, Mount Cnt to Cnt 170mm, Weight 4.82kg.

Additional published details for cross-checking include Product Group 1 ROTATING ELECTRICAL, Part No. HXA022, Brand OEX, Description OEX Alternator 12V 70A Hitachi Style, Adjusting Hole Diameter M8x1.25, Pin Code IR49, Power Rating (Amp) 70, Pulley Section A, Suits Unit Make Hitachi, Alternator Mount Twin Leg.

OEX Alternator 12V 70A Hitachi Style. Part number HXA022 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 A. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number HXA022, 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 70 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Compatibility note: Confirm compatibility using part number HXA022, the Hitachi style description, and the listed mounting and pulley dimensions before purchase. Vehicle application data is provided, but the original alternator should still be matched carefully to avoid incorrect fitment.

FAQ

What is the part number for this alternator?

The part number is HXA022.

Is this a 12V alternator?

Yes. The listed voltage is 12V.

What output does it have?

The power rating is 70A.

What type of regulator does it use?

It has an internal regulator.

What mounting details are listed?

The alternator uses a twin leg mount, with 82mm inside mounting legs, 170mm mount centre to centre, a 10mm pivot hole, and an M8x1.25 adjusting hole.

What warranty is supplied?

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