OEX Alternator 12V 80A Mitsubishi Style MXA305

The OEX MXA305 is a new 12V alternator rated at 80A and built in a Mitsubishi style configuration. It suits Mitsubishi unit applications and is supplied as a twin leg mount alternator with a 4 groove pulley, 55mm pulley outside diameter, and ECU voltage control.

Key physical details include 66mm inside mounting legs, 175mm mount centre to centre, a 10mm M10x1.25 pivot hole, and an 8.5mm adjusting hole. Those measurements matter when you are matching the alternator to the existing brackets, pivot points, and drive arrangement before ordering.

This unit is part of OEX rotating electrical range and carries part number MXA305. It is a new alternator, weighs 5.06kg, and is backed by a 3 year passenger / 1 year commercial warranty. For buyers working from a sample or old unit, the pulley, mount style, and hole measurements are the most useful checks.

The alternator is listed with a Field Control Unit regulator type and an ECU voltage control feature. That combination makes the control setup an important part of the identification process, especially where the original charging system uses electronic voltage control rather than a simple fixed-output arrangement.

Key Features

• 12V, 80A alternator
• Mitsubishi style unit
• ECU voltage control
• Twin leg alternator mount
• New unit, not remanufactured
• 4 groove pulley

Specifications

• Voltage: 12V
• Power rating: 80A
• Regulator type: Field Control Unit
• Mount type: Twin leg
• Inside mounting legs: 66mm
• Mount centre to centre: 175mm
• Pivot hole diameter: M10x1.25 / 10mm
• Adjusting hole diameter: 8.5mm

Fitment guidance

• Suits Mitsubishi unit applications.
• Fitment data references Ford Laser, Ford Telstar, Mazda 121, Mazda 121 Metro, Mazda 323 Astina, Mazda 323 Protegé, Mazda 626, Mazda MX-5, and Mazda Premacy applications.
• Sample fitment references include Ford Laser 1985 through 2001 and Mazda 121 1990 through 1997, plus Mazda 121 Metro 1996 and 1997.
• Confirm the alternator by part number MXA305 and by matching the mounting and pulley details before purchase.

Application and Buying Notes

When matching this alternator, start with the part number MXA305 and then compare the physical fitment points: 66mm inside mounting legs, 175mm mount centre to centre, an M10x1.25 pivot hole, and an 8.5mm adjusting hole. Those measurements are the clearest checks for bracket compatibility and help avoid ordering the wrong Mitsubishi style unit.

The pulley setup also needs attention. This alternator uses a 4 groove pulley with a 55mm outside diameter, so it should be checked against the existing belt drive layout. If the original alternator has a different pulley section or size, the belt alignment and groove count need to be verified before fitting.

ECU voltage control is a notable feature on this unit, and the regulator type is listed as Field Control Unit. That means the electrical control arrangement is part of the fitment decision, not just the physical mounting. If the vehicle uses ECU-managed charging, the replacement alternator needs to match that style of control.

Because this is a 12V, 80A new alternator, it is important to compare the output rating and electrical configuration with the original unit rather than relying on appearance alone. A Mitsubishi style alternator can still vary in mounting, pulley, and regulator details, so the safest approach is to check the old unit, the mounting measurements, and any identifier labels before finalising the order.

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 MXA305 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 66mm, Pivot Hole Diameter M10x1.25 / 10, Pulley Outside Diameter 55mm, Regulator Type Field Control Unit, Voltage 12, Alternator Mount Twin Leg, New / Reman. New.

Additional published details for cross-checking include Product Group 2 ALTERNATORS, Part No. MXA305, Brand OEX, Description OEX Alternator 12V 80A Mitsubishi Style, Adjusting Hole Diameter 8.5, Pin Code IR29, Power Rating (Amp) 80, Pulley Section 4 Groove, Suits Unit Make Mitsubishi.

OEX Alternator 12V 80A Mitsubishi Style. Part number MXA305 should be checked first. Listed voltage is 12. Listed output rating is 80. These details form the core reference points used by parts interpreters when confirming the correct replacement.

Mount style is Twin Leg. Regulator type is Field Control Unit. Pulley configuration is 4 Groove. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number MXA305, 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 fitment with part number MXA305, the Mitsubishi style application, and the measured mounting and pulley details before ordering. If your existing alternator differs in mount style, pulley section, hole size, or control type, recheck compatibility against the vehicle and the original unit.

FAQ

What is the part number for this alternator?

The part number is MXA305.

Is this alternator new or remanufactured?

It is listed as new.

What is the output rating?

It is rated at 80A at 12V.

What pulley does it use?

It uses a 4 groove pulley with a 55mm outside diameter.

What mounting measurements should be checked?

Check the 66mm inside mounting legs, 175mm mount centre to centre, M10x1.25 / 10mm pivot hole, and 8.5mm adjusting hole.

Does it suit only Mitsubishi applications?

It is listed as a Mitsubishi style alternator and suits Mitsubishi unit applications, with fitment data also referencing several Ford and Mazda model groups. The part number and measurements should still be checked against the existing unit before ordering.