OEX Alternator 12V 100A Mitsubishi Style MXA2050

The OEX Alternator MXA2050 is a new 12V unit rated at 100A and described as Mitsubishi style, with a 4 groove pulley and external regulator. It is supplied as an each item and weighs 5.1kg, which are practical details to check when comparing against the original unit or confirming the correct replacement for your vehicle.

Mounting dimensions are important with alternators, and this unit is listed with twin leg mounting, 53mm inside mounting legs, a 173mm mount centre to centre measurement, and an 11mm pivot hole diameter. The adjusting hole diameter is listed at 11.5mm, so the physical mounting layout should be checked carefully before ordering.

The alternator is identified as part number MXA2050, with pin code ER55 and a note stating: F1 = Field Positive Feed from Computer, and S = 2.4K Ohms, Sense to Computer. That makes the regulator and wiring arrangement just as important as the mechanical fit when matching the replacement unit. The specified voltage is 12 and the power rating is 100 amps.

Key Features

• New OEX alternator, not remanufactured
• 12V, 100A output rating
• Mitsubishi style unit
• External regulator type
• 4 groove pulley
• Twin leg alternator mount

Specifications

• Brand: OEX
• Product type: Alternator
• Part No.: MXA2050
• Voltage: 12V
• Power rating: 100A
• New / Reman.: New
• Regulator type: External
• Pulley section: 4 groove

Fitment guidance

• CHRYSLER: PT CRUISER, PT CRUISER 2004, PT CRUISER 2005, PT CRUISER 2006, PT CRUISER 2007, plus other listed applications

Application and Buying Notes

Before ordering, compare the part number MXA2050, the ER55 pin code, and the mounting measurements against your existing alternator. The important physical checkpoints here are the 53mm inside mounting legs, 173mm mount centre to centre, 11mm pivot hole diameter, and 11.5mm adjusting hole diameter, because alternators with the same electrical rating can still differ in bracket layout.

The alternator is listed as Mitsubishi style and suits unit make Mitsubishi, with an external regulator and the note F1 = Field Positive Feed from Computer, S = 2.4K Ohms, Sense to Computer. Those electrical details matter if the vehicle uses a computer-controlled charge circuit, so it is worth confirming the connector style and charge control arrangement before fitting.

A 12V, 100A alternator is a common specification, but output rating alone is not enough to confirm interchange. Check the 4 groove pulley, 62mm pulley outside diameter, and twin leg mount against the removed unit. If the belt line, mounting ears, or regulator wiring differ, the alternator may not suit even where the electrical specs appear similar.

This part is sold as a new OEX alternator and carries a 3yr Passenger 1yr Commercial warranty. Warranty coverage does not replace fitment checking, so it is still best practice to verify the vehicle application, part number, and mounting measurements before installation or before sending the old unit away as a core or spare.

If you are comparing options, use the combination of 12V, 100A, MXA2050, ER55, and the listed mounting dimensions as your decision points. That is the most reliable way to narrow down the correct alternator for a Mitsubishi style application without relying on guesswork.

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 MXA2050 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 53mm, Pivot Hole Diameter 11, Pulley Outside Diameter 62mm, Regulator Type External, Voltage 12, Alternator Mount Twin Leg, New / Reman. New.

Additional published details for cross-checking include Product Group 2 ALTERNATORS, Part No. MXA2050, Brand OEX, Description OEX Alternator 12V 100A Mitsubishi Style, Adjusting Hole Diameter 11.5, Pin Code ER55, Power Rating (Amp) 100, Pulley Section 4 Groove, Suits Unit Make Mitsubishi.

OEX Alternator 12V 100A Mitsubishi Style. Part number MXA2050 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 External. 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 MXA2050, 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.

Available application references include CHRYSLER PT CRUISER, CHRYSLER PT CRUISER 2004, CHRYSLER PT CRUISER 2005, CHRYSLER PT CRUISER 2006. 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: Confirm fitment by matching part number MXA2050, pin code ER55, the 12V 100A specification, and the mounting and pulley dimensions against the existing alternator and vehicle application details before purchase.

FAQ

Is this alternator new or remanufactured?

It is listed as new, not remanufactured.

What is the part number for this alternator?

The part number is MXA2050.

What voltage and amperage does it have?

It is a 12V alternator rated at 100A.

What regulator type does it use?

It uses an external regulator.

What are the key mounting dimensions?

The listed mounting details are twin leg mount, 53mm inside mounting legs, 173mm mount centre to centre, 11mm pivot hole diameter, and 11.5mm adjusting hole diameter.

What warranty is listed?

The listed warranty is 3yr Passenger 1yr Commercial.