OEX Alternator 12V 100A Mitsubishi Style MXA320

The OEX Alternator MXA320 is a new 12V, 100A alternator in Mitsubishi style, supplied as each unit for rotating electrical applications. It uses an internal regulator and a 7 groove pulley with a 65mm outside diameter, which are practical checkpoints when matching the unit to an existing installation.

Mounting dimensions are specific: twin leg alternator mount, 55mm inside mounting legs, 175mm mount centre to centre, 10mm pivot hole diameter and M8 x 1.25 adjusting hole diameter. Those measurements matter when you are comparing the replacement unit against the vehicle’s original alternator and bracket arrangement.

OEX states the brand is sourced from market leading Original Equipment Manufacturers and aftermarket suppliers, with products sourced from ISO9001 certified factories. This alternator is backed by a 3 year passenger / 1 year commercial warranty, so it is aimed at buyers wanting a new replacement unit with clear specifications and known support.

The listed part number is MXA320 and the pin code is IR49. When you are cross-referencing a charging system part, the part number, pulley setup, regulator type and mounting measurements should be checked together rather than relying on appearance alone.

Key Features

• New OEX alternator
• 12V system
• 100A output
• Mitsubishi style unit
• Internal regulator
• 7 groove pulley

Specifications

• Brand: OEX
• Product type: Alternator
• Unit of measure: Each
• Voltage: 12
• Power rating: 100 amp
• New / remanufactured: New
• Regulator type: Internal
• Alternator mount: Twin leg

Fitment guidance

• Supported makes listed for this alternator include Mitsubishi, Hyundai and Proton.
• Fitment references shown include Hyundai Sonata, Mitsubishi Challenger, Mitsubishi Delica, Mitsubishi FTO, Mitsubishi Lancer, Mitsubishi Magna, Mitsubishi Pajero, Mitsubishi Starwagon, Mitsubishi Triton, Mitsubishi Verada, Proton Persona, Proton Satria and Proton Wira.
• Some sample application data is listed for Hyundai Sonata, Mitsubishi Challenger and Proton Persona, with year references appearing in the supplied fitment details.
• Because alternator fitment can vary by engine, bracket style and charging system layout, the part number and physical mounting dimensions should be checked against the vehicle before ordering.

Application and Buying Notes

Before buying, compare the existing alternator against the MXA320 part number, the Mitsubishi style body, and the measured points: 55mm inside mounting legs, 175mm mount centre to centre, 10mm pivot hole and M8 x 1.25 adjusting hole. These details are often the quickest way to confirm whether the housing and bracket arrangement are the same.

The pulley details also matter. This alternator has a 65mm outside diameter pulley with a 7 groove section, so the belt type and groove count need to suit the vehicle’s drive setup. If the existing unit uses a different pulley section or diameter, it should be checked carefully before fitment.

The alternator is a 12V, 100A unit with an internal regulator. Those are useful checks for the charging system specification, but they do not replace vehicle-specific verification. The same model name can still use different alternator variants depending on engine or build details.

If you are replacing a worn or noisy alternator, weigh the 5.7kg unit and compare the mounting ear spacing and pivot arrangement with the old part. Matching the physical setup is important for avoiding installation issues and extra downtime.

For warranty planning, the stated cover is 3 years for passenger use and 1 year for commercial use. Keep the purchase record and confirm the application before installation, especially if the vehicle is used in a work setting or the charging system has already been modified.

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 MXA320 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 55mm, Pivot Hole Diameter 10, Pulley Outside Diameter 65mm, Regulator Type Internal, Voltage 12, Mount Cnt to Cnt 175mm, Weight 5.7kg.

Additional published details for cross-checking include Product Group 1 ROTATING ELECTRICAL, Part No. MXA320, Brand OEX, Description OEX Alternator 12V 100A Mitsubishi Style, Adjusting Hole Diameter M8 x 1.25, Pin Code IR49, Power Rating (Amp) 100, Pulley Section 7 Groove, Suits Unit Make Mitsubishi, Alternator Mount Twin Leg.

OEX Alternator 12V 100A Mitsubishi Style. Part number MXA320 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 7 Groove. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number MXA320, 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.

Compatibility note: Confirm compatibility by checking the MXA320 part number, Mitsubishi style case, 12V 100A rating, internal regulator, 7 groove pulley, and the listed mounting measurements against the vehicle’s original alternator and bracket arrangement before ordering.

FAQ

What is the part number for this alternator?

The listed part number is MXA320.

Is this alternator new or remanufactured?

It is listed as new, not remanufactured.

What voltage and output does it have?

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

Does it have an internal regulator?

Yes. The regulator type is listed as internal.

What pulley setup does it use?

It has a 65mm outside diameter pulley and a 7 groove pulley section.

What should I check before fitting it?

Check the MXA320 part number, Mitsubishi style housing, 12V 100A rating, internal regulator, pulley type, and the mounting measurements of 55mm inside legs, 175mm centre to centre, 10mm pivot hole and M8 x 1.25 adjusting hole.