OEX Alternator 12V 75A Mitsubishi Style MXA258

The OEX Alternator MXA258 is a 12V, 75A rotating electrical unit in Mitsubishi style, supplied new as an each item for vehicle electrical replacement work. Key physical identifiers include twin leg alternator mounting, 175mm mount centre to centre, 55mm inside mounting legs, and a 12.5mm pivot hole diameter, so the mounting arrangement needs to be checked against the removed unit before purchase.

This alternator uses an internal regulator, an AA pulley section, and an 84mm pulley outside diameter. The shaft dimension is 17mm and the adjusting hole diameter is M8x1.25. Those measurements are the practical checks that matter when matching an alternator, because pulley size, shaft size, and bracket geometry must align with the vehicle application.

OEX states its products are sourced from market leading original equipment manufacturers and aftermarket suppliers, with manufacturing from ISO9001 certified factories. For this MXA258 alternator, the listed warranty is 3 years for passenger use and 1 year for commercial use, which gives a clear service context when choosing a replacement unit for the correct application.

Key Features

• 12V alternator with 75A power rating
• Mitsubishi style unit
• New unit, supplied each
• Internal regulator
• Twin leg alternator mount
• AA pulley section with 84mm outside diameter

Specifications

• Brand: OEX
• Product type: Alternator
• Part No.: MXA258
• Voltage: 12V
• Power rating: 75A
• Regulator type: Internal
• Alternator mount: Twin leg
• Inside mounting legs: 55mm

Application notes

• Listed as suitable for Mitsubishi applications.
• Fitment references also include Holden Jackaroo / Monterey, Mitsubishi Delica, Mitsubishi Fuso, Mitsubishi Fuso Canter, Mitsubishi Pajero, Mitsubishi Starwagon, Mitsubishi Triton, Toyota RAV4, FE6, FE7 and FE8.
• Sample application references shown include Mitsubishi Delica 1994 to 2003 and Toyota RAV4 2005 to 2012.
• Because the alternator is described as Mitsubishi style, matching the removed unit by part number and measurements is essential before ordering.

Application and Buying Notes

Before buying, confirm the removed alternator matches the important identifiers on this unit: MXA258, 12V, 75A, internal regulator, twin leg mount, 175mm mount centre to centre, and 84mm pulley outside diameter. These details are the main compatibility checkpoints and should be compared carefully with the existing part and mounting space in the vehicle.

The pulley section is AA and the shaft dimension is 17mm, so the drive and mounting dimensions need to line up as well as the electrical setup. The pivot hole diameter is 12.5mm and the adjusting hole diameter is M8x1.25, which are useful when checking bracket fit and adjuster hardware before installation.

This alternator is listed as new, not remanufactured, and the warranty is 3 years for passenger use or 1 year for commercial use. If the vehicle is used commercially, the shorter warranty period is relevant when planning the replacement, so it is worth confirming the duty cycle and application before purchase.

Fitment references span several makes and model families, but the safest approach is still to verify the part number, regulator type, mounting style, and pulley dimensions against the original unit. Alternators can appear similar externally while differing in mount spacing or pulley configuration, so a direct comparison is the best way to avoid a mismatch.

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 MXA258 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 12.5, Pulley Outside Diameter 84mm, 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. MXA258, Brand OEX, Description OEX Alternator 12V 75A Mitsubishi Style, Adjusting Hole Diameter M8x1.25, Pin Code IR49, Power Rating (Amp) 75, Pulley Section AA, Suits Unit Make Mitsubishi.

OEX Alternator 12V 75A Mitsubishi Style. Part number MXA258 should be checked first. Listed voltage is 12. Listed output rating is 75. 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 AA. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number MXA258, 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 75 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Available application references include FE6) 1993, FE6) 1994, FE6) 1995, FE6) 1996, FE8) 2002, FE8) 2003. 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 compatibility by matching part number MXA258, the Mitsubishi style design, and the listed mounting and pulley dimensions against the removed alternator and vehicle application before ordering.

FAQ

What is the voltage and output rating of this alternator?

It is a 12V alternator with a 75A power rating.

Is this alternator new or remanufactured?

It is listed as new.

What regulator type does it use?

It uses an internal regulator.

What mounting details are listed for this alternator?

The listed mounting details are twin leg alternator mount, 175mm mount centre to centre, 55mm inside mounting legs, and 12.5mm pivot hole diameter.

What pulley and shaft measurements are provided?

The pulley outside diameter is 84mm, the pulley section is AA, and the shaft dimension is 17mm.

What warranty is listed for this product?

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