OEX Alternator 12V 70A Hitachi Style RXA074

The OEX Alternator RXA074 is a 12V, 70A remanufactured alternator in Hitachi style, supplied as an each unit for rotating electrical applications. Key physical details include an 83mm inside mounting leg dimension, twin leg alternator mount, M10 pivot hole, and an M8 x 1.25 adjusting hole, so it is important to compare the mounting pattern before purchase.

This alternator uses an internal regulator and a 62mm pulley outside diameter with an AA pulley section. The unit is listed at 4.56kg and carries pin code IR79, which can be useful when matching the replacement to the existing unit already in the vehicle.

OEX states its products are sourced from market leading original equipment manufacturers and aftermarket suppliers, with manufacturing through ISO9001 certified factories. The alternator is backed by a 3yr Passenger / 1yr Commercial warranty, which gives a clear warranty frame depending on how the vehicle is used.

Key Features

• 12V alternator with 70A output
• Remanufactured Hitachi style unit
• Internal regulator
• Twin leg alternator mount
• 83mm inside mounting legs
• M10 pivot hole and M8 x 1.25 adjusting hole

Specifications

• Brand: OEX
• Part No.: RXA074
• Product type: Alternator
• Voltage: 12V
• Power rating: 70A
• New / remanufactured: Remanufactured
• Suits unit make: Hitachi
• Alternator mount: Twin leg

Checked fitment applications

• Holden Jackaroo / Monterey
• Holden Jackaroo / Monterey 1998
• Holden Jackaroo / Monterey 1999
• Holden Jackaroo / Monterey 2000
• Holden Jackaroo / Monterey 2001
• Holden Jackaroo / Monterey 2002
• Holden Jackaroo / Monterey 2003
• Holden Jackaroo / Monterey 2004

Application and Buying Notes

Before ordering, compare the part number RXA074, the Hitachi style designation, and the physical mounting details on the vehicle. The important matching points here are the 83mm inside mounting legs, twin leg mount, M10 pivot hole, and M8 x 1.25 adjusting hole, as these are the kinds of details that determine whether the alternator will physically install correctly.

The electrical specification is 12V and 70A, so this unit is intended to match a system built around that output range. The internal regulator also matters when you are replacing a unit, because regulator type must align with the vehicle’s charging setup rather than just the pulley size or casing shape.

The pulley details are also worth checking closely. This alternator has a 62mm pulley outside diameter and an AA pulley section, so the belt arrangement needs to suit those dimensions. If the old alternator is still available, matching the pulley, mount style, and pin code IR79 can help avoid ordering the wrong unit.

Although this alternator is listed against Holden Jackaroo / Monterey and Isuzu Wizard applications, fitment should still be checked against the exact vehicle and the existing component. Vehicle production changes and previous repairs can affect interchange, so the safest approach is to verify the part number, mounting points, and regulator arrangement before fitting.

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 RXA074 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 83mm, Pivot Hole Diameter M10, Pulley Outside Diameter 62mm, Regulator Type Internal, Voltage 12, Alternator Mount Twin Leg, New / Reman. Remanufactured.

Additional published details for cross-checking include Product Group 2 ALTERNATORS, Part No. RXA074, Brand OEX, Description OEX Alternator 12V 70A Hitachi Style, Adjusting Hole Diameter M8 x 1.25, Pin Code IR79, Power Rating (Amp) 70, Pulley Section AA, Suits Unit Make Hitachi.

OEX Alternator 12V 70A Hitachi Style. Part number RXA074 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 AA. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number RXA074, 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.

Available application references include HOLDEN JACKAROO / MONTEREY, HOLDEN JACKAROO / MONTEREY 1998, HOLDEN JACKAROO / MONTEREY 1999, HOLDEN JACKAROO / MONTEREY 2000, ISUZU WIZARD, ISUZU WIZARD 1998. 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 fitment by matching RXA074, the Hitachi style alternator configuration, and the vehicle’s mounting and pulley details before ordering.

FAQ

What is the part number for this alternator?

The part number is RXA074.

Is this alternator new or remanufactured?

It is listed as remanufactured.

What voltage and output does it have?

It is a 12V alternator with a 70A power rating.

What regulator type does it use?

It uses an internal regulator.

Which vehicles are listed for fitment?

Listed fitment includes Holden Jackaroo / Monterey and Isuzu Wizard applications, with model years shown from 1998 through 2004 for Jackaroo / Monterey and 1998 through 2002 for Wizard in the supplied fitment data.

What should be checked before buying?

Check the part number RXA074, the Hitachi style specification, the twin leg mount, 83mm inside mounting legs, M10 pivot hole, M8 x 1.25 adjusting hole, and the 62mm pulley outside diameter against the vehicle’s existing alternator.