OEX Alternator 12V 45A Mitsubishi Style RXA239

The OEX Alternator RXA239 is a 12V, 45A remanufactured alternator in Mitsubishi style, supplied as an each unit for rotating electrical applications. It is listed with an internal regulator and a twin leg alternator mount, so the mounting style and charging specification need to match the vehicle application before purchase.

Key physical details include a 68mm outside pulley diameter, 53mm inside mounting legs, a 175mm mount centre-to-centre measurement, an 8mm pivot hole diameter, and an M8x1.25 adjusting hole. The shaft dimension is 17, and the pulley section is A. These measurements are the practical checks that help confirm whether the unit lines up correctly in the vehicle.

OEX identifies this alternator as suitable for Mitsubishi applications, with the part number RXA239 and pin code IR15. It is remanufactured rather than new, and it carries a 3yr Passenger / 1yr Commercial warranty, which gives buyers a clear service context when comparing replacement alternators.

OEX states its products are sourced from market leading Original Equipment Manufacturers and aftermarket suppliers, with factory supply from ISO9001 certified facilities. For a charging component such as this 12V 45A alternator, those controls matter because fit, electrical output and mounting accuracy all need to be correct for a reliable installation.

Key Features

• 12V alternator with 45A power rating
• Remanufactured Mitsubishi style unit
• Internal regulator
• Twin leg alternator mount
• Part number RXA239
• Pin code IR15

Specifications

• Brand: OEX
• Product type: Alternator
• Unit of measure: Each
• Voltage: 12
• Power rating: 45A
• New / remanufactured: Remanufactured
• Regulator type: Internal
• Alternator mount: Twin leg

Fitment guidance

• Listed for Mitsubishi applications
• Fitment data also references selected Chrysler, Ford, Mazda and Mercedes-Benz application families in the supplied vehicle coverage
• Sample application families shown include Mitsubishi Colt, Mitsubishi Express, Mitsubishi Fuso Canter, Mitsubishi Pajero, Mitsubishi Sigma and Mitsubishi Triton
• Ford Courier and Mazda B-Series / T-Series are also represented in the coverage preview
• Because alternator fitment depends on mount, pulley, regulator and output details, confirm all measurements against the existing unit before ordering

Application and Buying Notes

When replacing an alternator like the RXA239, the most important checks are the 12V system, 45A output, twin leg mounting arrangement and the pulley dimensions. A close visual match is not enough on its own; the 68mm pulley outside diameter, 53mm inside mounting legs, 175mm mount centre-to-centre measurement and M8x1.25 adjuster hole are the details that usually decide whether the unit bolts up correctly.

This alternator is listed as Mitsubishi style and suited to Mitsubishi applications, but the fit still needs to be matched to the exact vehicle application and the old unit. The internal regulator and pin code IR15 are useful identifiers when comparing against the existing alternator or workshop notes, especially where more than one charging setup may have been used across a model range.

The unit is remanufactured, so it should be considered a replacement part designed to match the stated specification rather than a generic universal alternator. Weight is listed at 4.32kg, which can also help when checking that the unit supplied is the correct style for the vehicle. If you are replacing a failing alternator, it is sensible to compare the old part number, connector arrangement and mounting points before finalising the order.

Warranty is 3 years for passenger use and 1 year for commercial use, which is a useful reference when the vehicle is used in different duty cycles. Even with that warranty, the correct application match remains the buyer’s responsibility, because alternators must align on electrical output, pulley section, regulator type and mounting dimensions as well as the broad vehicle make.

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 RXA239 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 8, Pulley Outside Diameter 68mm, Regulator Type Internal, Voltage 12, Mount Cnt to Cnt 175mm, Shaft Dimension 17.

Additional published details for cross-checking include Product Group 2 ALTERNATORS, Part No. RXA239, Brand OEX, Description OEX Alternator 12V 45A Mitsubishi Style, Adjusting Hole Diameter M8x1.25, Pin Code IR15, Power Rating (Amp) 45, Pulley Section A, Suits Unit Make Mitsubishi.

OEX Alternator 12V 45A Mitsubishi Style. Part number RXA239 should be checked first. Listed voltage is 12. Listed output rating is 45. 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 A. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number RXA239, 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: Please confirm fitment using the part number RXA239, the 12V 45A specification, the Mitsubishi style mounting details, and the physical measurements listed here before ordering. Vehicle application coverage is broad, but the final check should always be against the existing alternator and the vehicle’s exact charging setup.

FAQ

What is the part number for this alternator?

The part number is RXA239.

Is this alternator new or remanufactured?

It is listed as remanufactured.

What voltage and output does it have?

It is a 12V alternator with a 45A power rating.

Does it have an internal regulator?

Yes. The regulator type is listed as internal.

What mounting and pulley measurements are provided?

The listed measurements include 53mm inside mounting legs, 175mm mount centre-to-centre, an 8mm pivot hole, an M8x1.25 adjusting hole, a 68mm pulley outside diameter, and an A section pulley.

What warranty is supplied?

The warranty is listed as 3yr Passenger / 1yr Commercial.