OEX Alternator 12V 100A Mitsubishi Style MXA2021

The OEX Alternator MXA2021 is a new 12V, 100A unit with a Mitsubishi-style design and pad mount arrangement. It is supplied as an each item, with a 6 groove pulley, internal regulator, and a pulley outside diameter of 53mm.

This alternator is listed with a 50mm mount leg thickness, 10mm pivot hole diameter, 10mm adjusting hole diameter, and a mount centre-to-centre measurement of 169mm. It weighs 6.1kg and carries part number MXA2021, with pin code IR127.

OEX positions this alternator range as an aftermarket option built around quality and reliability, with ISO9001 certified factories supporting engineering, testing, and quality control processes. Warranty coverage is 3 years for passenger use and 1 year for commercial use.

The stated application information identifies Mitsubishi as the suit unit make, and the notes also advise that it will not interchange with MXA331. Checking the part number, mounting measurements, pulley setup, and regulator type is the safest way to confirm the match before purchase.

Key Features

• 12V alternator with 100A output
• Mitsubishi-style unit
• New alternator, supplied each
• Internal regulator
• 6 groove pulley
• Pad mount design

Specifications

• Voltage: 12V
• Power rating: 100A
• Pulley outside diameter: 53mm
• Pulley section: 6 groove
• Mount leg thickness: 50mm
• Pivot hole diameter: 10mm
• Adjusting hole diameter: 10mm
• Mount centre to centre: 169mm

Fitment guidance

• Suits unit make: Mitsubishi
• Fitment data supplied includes Holden applications such as Adventra, Calais, Caprice, Commodore, Crewman, One Tonner, and Statesman
• Application listings include Holden Adventra model years shown in the supplied data, including 2005, 2006, 2007, and 2008

Application and Buying Notes

Before ordering, match the part number MXA2021 and confirm the Mitsubishi-style pad mount layout against the vehicle’s existing alternator. The key checking points here are the 12V system, 100A output, internal regulator, 6 groove pulley, and the 169mm mount centre-to-centre measurement.

The physical dimensions matter as much as the electrical rating. This unit has a 50mm mount leg thickness, 10mm pivot hole, 10mm adjusting hole, and a 53mm pulley outside diameter, so a close visual match is important before fitting.

The note that MXA2021 will not interchange with MXA331 should be taken seriously. Even where a vehicle family is listed in the application data, alternators can differ by mount style, pulley setup, and regulator configuration, so compare the old unit carefully.

If you are buying for a workshop job or a fleet vehicle, the warranty is 3 years for passenger use and 1 year for commercial use. That makes it worth confirming the application and confirming the exact alternator details before the part is removed from packaging or fitted.

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 MXA2021 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, Mount Leg Thickness 50mm, Pivot Hole Diameter 10, Pulley Outside Diameter 53mm, Regulator Type Internal, Voltage 12, Alternator Mount Pad, New / Reman. New.

Additional published details for cross-checking include Product Group 2 ALTERNATORS, Part No. MXA2021, Brand OEX, Description OEX Alternator 12V 100A Mitsubishi Style, Adjusting Hole Diameter 10, Pin Code IR127, Power Rating (Amp) 100, Pulley Section 6 Groove, Suits Unit Make Mitsubishi.

OEX Alternator 12V 100A Mitsubishi Style. Part number MXA2021 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 Pad. Regulator type is Internal. Pulley configuration is 6 Groove. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number MXA2021, 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.

Compatibility note: Confirm compatibility by checking part number MXA2021, the Mitsubishi-style pad mount, 12V 100A rating, 6 groove pulley, internal regulator, and the stated mount measurements against the vehicle and the removed unit before installation.

FAQ

What is the part number for this alternator?

The part number is MXA2021. The pin code is IR127. For this listing, part number MXA2021 is the main reference point. Listed voltage is 12. Listed output rating is 100. Published fitment references include HOLDEN ADVENTRA, HOLDEN ADVENTRA 2005, HOLDEN ADVENTRA 2006. These details should still be checked against the original unit before ordering.

What voltage and output does it have?

It is a 12V alternator rated at 100A. For this listing, part number MXA2021 is the main reference point. Listed voltage is 12. Listed output rating is 100. Published fitment references include HOLDEN ADVENTRA, HOLDEN ADVENTRA 2005, HOLDEN ADVENTRA 2006. These details should still be checked against the original unit before ordering.

Is this alternator new or remanufactured?

It is listed as new. For this listing, part number MXA2021 is the main reference point. Listed voltage is 12. Listed output rating is 100. Published fitment references include HOLDEN ADVENTRA, HOLDEN ADVENTRA 2005, HOLDEN ADVENTRA 2006. These details should still be checked against the original unit before ordering.

What type of regulator does it use?

It uses an internal regulator. For this listing, part number MXA2021 is the main reference point. Listed voltage is 12. Listed output rating is 100. Published fitment references include HOLDEN ADVENTRA, HOLDEN ADVENTRA 2005, HOLDEN ADVENTRA 2006. These details should still be checked against the original unit before ordering.

What pulley configuration is listed?

It has a 6 groove pulley with a pulley outside diameter of 53mm. For this listing, part number MXA2021 is the main reference point. Listed voltage is 12. Listed output rating is 100. Published fitment references include HOLDEN ADVENTRA, HOLDEN ADVENTRA 2005, HOLDEN ADVENTRA 2006. These details should still be checked against the original unit before ordering.

What should I check before buying?

Check the part number MXA2021, the Mitsubishi-style pad mount, the 12V 100A rating, the 169mm mount centre-to-centre measurement, and confirm it does not need to interchange with MXA331. For this listing, part number MXA2021 is the main reference point. Listed voltage is 12. Listed output rating is 100. Published fitment references include HOLDEN ADVENTRA, HOLDEN ADVENTRA 2005, HOLDEN ADVENTRA 2006. These details should still be checked against the original unit before ordering.