OEX Alternator 12V 100A Hitachi Style HXA058

The OEX Alternator HXA058 is a new 12V, 100A unit built in Hitachi style for applications that call for a twin leg alternator mount. It is listed with an internal regulator, AA pulley section, 72mm pulley outside diameter, and a 17mm shaft dimension, so the mounting and drive setup need to be checked carefully before purchase.

This alternator uses a 174mm mount centre to centre, 81mm inside mounting legs, and a pivot hole diameter of 10mm, with an M8x1.25 adjusting hole. Those measurements matter when you are matching the alternator to the bracket, pivot, and adjuster arrangement on the vehicle or equipment.

OEX states that its products are sourced from market leading original equipment manufacturers and aftermarket suppliers, with factories that are ISO9001 certified. The HXA058 carries a 3 year passenger and 1 year commercial warranty, and the unit weight is listed at 5.78kg.

Key Features

• New alternator
• 12V system
• 100A output
• Hitachi style
• Internal regulator
• Twin leg mount

Specifications

• Part No.: HXA058
• Brand: OEX
• Type: Alternator
• Voltage: 12V
• Power rating: 100A
• New / Reman.: New
• Suits unit make: Hitachi
• Alternator mount: Twin leg

Fitment guidance

• Fitment data supplied includes Nissan applications such as Cabstar, Industrial, Industrial Forklift, Navara, and Patrol.
• Sample application data includes Nissan Cabstar for 1987, 1988, 1989, and 1990 through 1992.
• Fitment should still be confirmed against the part number HXA058 and the measured mounting and pulley details before ordering.

Application and Buying Notes

Before buying, compare the alternator’s key dimensions with the vehicle or equipment setup: 174mm mount centre to centre, 81mm inside mounting legs, 10mm pivot hole diameter, and M8x1.25 adjusting hole. These points determine whether the unit will physically mount in the same way as the original.

The 12V, 100A specification is important when matching electrical system requirements. If the original alternator differs in voltage, output, regulator type, or pulley arrangement, the replacement may not be suitable even if the brackets appear close at first glance.

This unit is described as Hitachi style and suited to Hitachi applications, so it is best treated as a pattern-matched replacement rather than a universal part. Confirm the existing alternator’s part number, pulley section, shaft dimension, and mount style before fitting.

The pulley details are also worth checking carefully. The listed 72mm outside diameter and AA pulley section must align with the belt arrangement already on the vehicle or machine. A mismatch here can lead to belt tracking or drive issues, so the belt profile should not be assumed.

The warranty is 3 years for passenger use and 1 year for commercial use. That does not remove the need to verify application details first, especially on Nissan Cabstar, Navara, Patrol, Industrial, or Industrial Forklift listings where multiple configurations may exist across different years and equipment variants.

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 HXA058 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 81mm, Pivot Hole Diameter 10, Pulley Outside Diameter 72mm, Regulator Type Internal, Voltage 12, Mount Cnt to Cnt 174mm, Shaft Dimension 17.

Additional published details for cross-checking include Product Group 2 ALTERNATORS, Part No. HXA058, Brand OEX, Description OEX Alternator 12V 100A Hitachi Style, Adjusting Hole Diameter M8x1.25, Pin Code IR49, Power Rating (Amp) 100, Pulley Section AA, Suits Unit Make Hitachi.

OEX Alternator 12V 100A Hitachi Style. Part number HXA058 should be checked first. Listed voltage is 12. Listed output rating is 100. 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 AA. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number HXA058, 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 100 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Available application references include NISSAN CABSTAR, NISSAN CABSTAR 1987, NISSAN CABSTAR 1988, NISSAN CABSTAR 1989. 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.

The listed warranty is 3yr Passenger 1yr Commercial. Warranty terms should be considered alongside correct application and part identification, as warranty does not replace fitment confirmation.

Compatibility note: Confirm compatibility using part number HXA058, the 12V 100A rating, Hitachi style design, twin leg mount, and the measured mounting and pulley details before ordering. If the original unit is different in any of those points, do not assume interchange.

FAQ

What is the part number for this alternator?

The part number listed is HXA058.

What voltage and output does this alternator have?

It is a 12V alternator with a 100A power rating.

Is this alternator new or remanufactured?

It is listed as new.

What type of regulator does it use?

It uses an internal regulator.

What mounting style does it have?

It is a twin leg alternator mount with 174mm mount centre to centre and 81mm inside mounting legs.

Which vehicle groups are shown in the fitment data?

The fitment data includes Nissan Cabstar, Nissan Industrial, Nissan Industrial Forklift, Nissan Navara, and Nissan Patrol applications, with sample Cabstar listings shown for 1987 to 1992.