OEX Alternator 12V 100A Hitachi Style HXA063

The OEX Alternator HXA063 is a 12V, 100A rotating electrical unit supplied new and built in a Hitachi style format. It uses an internal regulator, a twin leg alternator mount, and an A section pulley, which are important details to match when comparing replacement units.

This alternator carries a 3 year passenger / 1 year commercial warranty and is listed under OEX part number HXA063 with pin code IR49. It weighs 6.3kg, has a 84mm pulley outside diameter, and a 175mm mount centre to centre measurement, so physical comparison remains essential before purchase.

OEX identifies this product as suitable for Hitachi applications, but alternator interchange should always be checked carefully against the existing unit and vehicle application. Key dimensions such as the 79mm inside mounting legs, 10mm pivot hole diameter, and M8x1.25 adjusting hole help confirm whether the replacement matches the original setup.

Key Features

• 12V alternator with 100A output
• Hitachi style replacement
• Internal regulator
• Twin leg alternator mount
• New unit, not remanufactured
• 3 year passenger / 1 year commercial warranty

Specifications

• Voltage: 12V
• Power rating: 100A
• Type: Alternator
• Unit of measure: Each
• New / remanufactured: New
• Regulator type: Internal
• Alternator mount: Twin leg
• Pulley section: A

Fitment guidance

• Fitment is listed against Nissan applications, including Elgrand, Patrol, Terrano, and Terrano II.
• The supplied fitment preview includes Nissan Elgrand model years 1995, 1996, 1997, 1998, 1999, 2000, and 2001.
• The vehicle list is application-specific, so the part number and physical measurements should still be checked against the existing alternator before ordering.

Application and Buying Notes

When replacing an alternator, the safest check is to compare the part number HXA063, the Hitachi style designation, and the physical mounting dimensions. In this case, the important measurements include 175mm mount centre to centre, 79mm inside mounting legs, 10mm pivot hole diameter, and an M8x1.25 adjusting hole.

The 12V and 100A rating should match the electrical requirement of the vehicle and the charging system already fitted. The internal regulator is another key point, because regulator type must align with the existing arrangement for the alternator to be a proper interchange.

Pulley details matter as well. This unit uses an A section pulley with an 84mm outside diameter, so the pulley style and size should be compared with the removed alternator. A mismatch here can affect belt alignment and installation even where the vehicle model appears similar.

The listed weight of 6.3kg can also assist with bench comparison, especially when checking against the old unit before installation. If you are working from a vehicle application rather than the original alternator in hand, confirm the make, model, year, and alternator mounting arrangement before committing to purchase.

OEX backs this alternator with a 3 year passenger / 1 year commercial warranty, which is useful once the correct application has been confirmed. Warranty cover does not replace fitment checks, so the part number, pin code IR49, and all mounting measurements should be treated as the final points of verification.

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 HXA063 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 79mm, Pivot Hole Diameter 10, Pulley Outside Diameter 84mm, Regulator Type Internal, Voltage 12, Mount Cnt to Cnt 175mm, Weight 6.3kg.

Additional published details for cross-checking include Product Group 1 ROTATING ELECTRICAL, Part No. HXA063, Brand OEX, Description OEX Alternator 12V 100A Hitachi Style, Adjusting Hole Diameter M8x1.25, Pin Code IR49, Power Rating (Amp) 100, Pulley Section A, Suits Unit Make Hitachi, Alternator Mount Twin Leg.

OEX Alternator 12V 100A Hitachi Style. Part number HXA063 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 A. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number HXA063, 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 ELGRAND, NISSAN ELGRAND 1995, NISSAN ELGRAND 1996, NISSAN ELGRAND 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.

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: Please confirm fitment by matching OEX part number HXA063, pin code IR49, the Hitachi style application, and the mounting and pulley measurements against the alternator currently fitted to the vehicle.

FAQ

Is this alternator new or remanufactured?

This OEX alternator is listed as new, not remanufactured.

What is the output rating?

It is rated at 12V and 100A.

Does it have an internal regulator?

Yes. The regulator type is internal.

What mounting style does it use?

It is listed as a twin leg alternator mount.

Which part number should I check against my old unit?

The part number supplied is HXA063, with pin code IR49.

What warranty is provided?

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