OEX Alternator 12V 120A Mitsubishi Style MXA2109

The OEX MXA2109 is a 12V alternator with a 120A power rating, supplied new and built in a Mitsubishi style layout. It is identified by part number MXA2109 and uses an internal regulator, which is important when matching the unit to the vehicle’s charging system and existing wiring setup.

This alternator is listed with a twin leg mount, 60mm inside mounting legs, a 175mm mount centre-to-centre dimension, and a 12mm pivot hole diameter. The pulley is an AA section with a 72mm outside diameter, and the adjusting hole is M8x1.25. Those dimensions are the key checks to make before ordering or fitting.

OEX positions this alternator as part of its rotating electrical range, with ISO9001 certified factories and a warranty of 3 years for passenger use and 1 year for commercial use. For buyers comparing replacements, the brand, part number MXA2109, voltage, amperage, and mount details are the main identifiers to verify against the original unit.

Key Features

• 12V alternator with 120A output
• New unit, not remanufactured
• Internal regulator type
• Mitsubishi style alternator
• Twin leg mount configuration
• AA pulley section

Specifications

• Brand: OEX
• Product type: Alternator
• Part No.: MXA2109
• Voltage: 12V
• Power rating: 120A
• Unit condition: New
• Regulator type: Internal
• Alternator mount: Twin leg

Verified fitment guidance

• Listed fitment includes Mitsubishi and Mitsubishi Pajero
• Sample applications shown include Mitsubishi Pajero 2006, 2007, 2008 and 2009
• Fitment is based on the supplied application data and should still be checked against the existing alternator and vehicle details

Application and Buying Notes

When replacing an alternator, the most useful checks are the part number, mount style, pulley details, and regulator type. This OEX unit is MXA2109, 12V, 120A, with an internal regulator and a twin leg mount, so it is intended for applications that match those exact details rather than any Mitsubishi vehicle in general.

The physical measurements matter just as much as the electrical rating. Confirm the 60mm inside mounting legs, 175mm centre-to-centre mount measurement, 12mm pivot hole, M8x1.25 adjusting hole, and 72mm AA pulley before ordering. If any of those dimensions differ from the original alternator, the unit may not align correctly in the engine bay or with the drive belt.

The 120A output is a useful reference when comparing to the original unit, but output alone does not confirm compatibility. Matching the Mitsubishi style housing, the internal regulator, and the listed fitment notes is the safer way to select the correct replacement. If the vehicle has been modified, or if the existing alternator has been changed previously, the part number on the old unit is the best starting point.

For workshop or commercial use, the warranty period is different from passenger use: 3 years for passenger vehicles and 1 year for commercial vehicles. That makes it worth confirming the intended application before installation, especially where the vehicle is used daily or in service work and the alternator load may be higher.

The listed weight is 6.32kg, which can be helpful when comparing boxed replacements or checking that the correct style of alternator is on hand before removal. As with any electrical component, a careful match on mounting, pulley, and regulator type helps avoid delays during fitment.

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 MXA2109 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 60mm, Pivot Hole Diameter 12, Pulley Outside Diameter 72mm, Regulator Type Internal, Voltage 12, Item Type Alternator, New / Reman. New.

Additional published details for cross-checking include Product Group 2 ALTERNATORS, Part No. MXA2109, Brand OEX, Description OEX Alternator 12V 120A Mitsubishi Style, Adjusting Hole Diameter M8x1.25, Pin Code IR70, Power Rating (Amp) 120, Pulley Section AA, Suits Unit Make Mitsubishi.

OEX Alternator 12V 120A Mitsubishi Style. Part number MXA2109 should be checked first. Listed voltage is 12. Listed output rating is 120. 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 MXA2109, 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 120 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Available application references include MITSUBISHI PAJERO, MITSUBISHI PAJERO 2006, MITSUBISHI PAJERO 2007, MITSUBISHI PAJERO 2008. 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.

Compatibility note: Please confirm fitment using the OEX part number MXA2109, the Mitsubishi style application, and the listed mounting and pulley dimensions before purchase. If the existing alternator does not match the 12V, 120A, internal regulator, twin leg mount, and 72mm AA pulley details, treat it as a different application.

FAQ

What is the part number for this alternator?

The OEX part number is MXA2109.

What is the voltage and output rating?

This alternator is 12V with a 120A power rating.

Is this alternator new or remanufactured?

It is listed as new.

What regulator type does it use?

It uses an internal regulator.

What fitment information is provided?

Listed fitment includes Mitsubishi and Mitsubishi Pajero, with sample applications shown for Mitsubishi Pajero 2006, 2007, 2008 and 2009.

What warranty applies?

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