OEX Alternator 12V 130A Mitsubishi Style MXA2120

The OEX Alternator MXA2120 is a new 12V alternator rated at 130A and built in a Mitsubishi style layout. It uses an internal regulator, a 5 groove pulley with a 55mm outside diameter, and a twin leg alternator mount, so the physical dimensions matter as much as the electrical rating when checking suitability.

Key mounting dimensions supplied for this unit include 80mm inside mounting legs, 175mm mount centre to centre, an 8mm pivot hole diameter, and an M8x1.25 adjusting hole. Those details are important for anyone matching an existing alternator or comparing against the vehicle’s original charging unit.

This alternator is listed as suited to Mitsubishi applications, and the part number is MXA2120. It is a new rotating electrical component sold as each, with a stated weight of 5.62kg and a warranty of 3 years for passenger use or 1 year for commercial use.

OEX states that its products are sourced from market leading original equipment manufacturers and aftermarket suppliers, and that the factories are ISO9001 certified to support engineering, testing, and quality control procedures. For buyers, that gives useful context, but the correct fit still comes down to the part number, mounting style, pulley specification, and the vehicle application.

Key Features

• 12V alternator with 130A output
• New unit, sold individually
• Mitsubishi style alternator
• Internal regulator
• 5 groove pulley, 55mm outside diameter
• Twin leg alternator mount

Specifications

• Brand: OEX
• Product type: Alternator
• Voltage: 12V
• Output: 130A
• Part No.: MXA2120
• Pin Code: IR203
• Suits unit make: Mitsubishi
• Alternator mount: Twin leg

Fitment guidance

• Listed as suited to Mitsubishi applications
• Do not rely on appearance alone; confirm the mounting pattern, pulley type, and part number before ordering
• Check the 80mm inside mounting legs and 175mm mount centre to centre against the existing unit
• Confirm the 5 groove pulley with 55mm outside diameter matches the vehicle setup
• Verify the twin leg mount, 8mm pivot hole, and M8x1.25 adjusting hole against the old alternator

Application and Buying Notes

The most reliable way to approach this alternator is to verify the part number MXA2120 first, then compare the mounting dimensions and pulley details. A Mitsubishi style housing can still vary in fitment, so the 80mm inside mounting legs, 175mm mount centre to centre, 8mm pivot hole, and M8x1.25 adjusting hole should all be checked against the removed unit before purchase.

The electrical rating is 12V at 130A, which makes this a higher output alternator than many standard units. That matters if the vehicle has the original charging system, factory accessories, or any added electrical load, because the alternator must match the vehicle’s charging requirements and physical arrangement rather than just the voltage on its own.

The pulley specification is also critical. This unit uses a 5 groove pulley with a 55mm outside diameter, so the belt profile and alignment need to be correct. If the vehicle uses a different groove count or pulley diameter, the alternator may not be suitable even if the mounting points look similar.

Weight is listed at 5.62kg, which can be a useful cross-check when comparing with the existing alternator. If you are replacing a unit that has a different mounting style, regulator type, or pulley arrangement, take the old unit off and compare all visible features side by side. That is the safest way to avoid ordering the wrong component for a Mitsubishi application.

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 MXA2120 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 80mm, Pivot Hole Diameter 8, Pulley Outside Diameter 55mm, Regulator Type Internal, Voltage 12, Mount Cnt to Cnt 175mm, Weight 5.62kg.

Additional published details for cross-checking include Product Group 1 ROTATING ELECTRICAL, Part No. MXA2120, Brand OEX, Description OEX Alternator 12V 130A Mitsubishi Style, Adjusting Hole Diameter M8x1.25, Pin Code IR203, Power Rating (Amp) 130, Pulley Section 5 Groove, Suits Unit Make Mitsubishi, Alternator Mount Twin Leg.

OEX Alternator 12V 130A Mitsubishi Style. Part number MXA2120 should be checked first. Listed voltage is 12. Listed output rating is 130. 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 5 Groove. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number MXA2120, 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 using part number MXA2120, the Mitsubishi application, and the stated mounting and pulley dimensions before ordering. If there is any difference in the twin leg mount, 5 groove pulley, 55mm pulley diameter, or hole spacing, the alternator should be checked carefully against the vehicle’s original unit.

FAQ

What type of alternator is this?

It is an OEX alternator, new and rated at 12V 130A. It is described as a Mitsubishi style unit with an internal regulator.

What is the part number?

The part number is MXA2120.

What mounting details are listed?

The listed mounting details are twin leg alternator mount, 80mm inside mounting legs, 175mm mount centre to centre, 8mm pivot hole diameter, and M8x1.25 adjusting hole diameter.

What pulley specification does it have?

It uses a 5 groove pulley with a 55mm outside diameter.

What vehicles is it listed for?

It is listed as suited to Mitsubishi applications. No specific model fitment should be assumed beyond the supplied application information.

What warranty is supplied?

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