OEX Alternator 12V 140A Mitsubishi Style MXA2105

The OEX MXA2105 is a new 12V alternator rated at 140A and built in a Mitsubishi style configuration. It is listed with a 6 groove pulley, internal regulator, single leg alternator mount, and a 51mm mount leg thickness, so the physical layout needs to suit the vehicle and bracket arrangement before purchase.

Key measured details include a 139mm mount centre-to-centre dimension, 11mm pivot hole diameter, 11mm adjusting hole diameter, and a 57.5mm pulley outside diameter. Those measurements are the sort of details that matter when checking whether the alternator will physically align with the existing belt drive and mounting points.

This unit is identified as Part No. MXA2105 and Pin Code IR127, with a stated suit to Mitsubishi units. It is a new alternator, sold each, and carries OEX warranty cover of 3 years for passenger use and 1 year for commercial use.

Key Features

• 12V alternator with 140A output
• Mitsubishi style unit
• New, not remanufactured
• Internal regulator
• 6 groove pulley
• Single leg alternator mount

Specifications

• Power rating: 140A
• Voltage: 12V
• Pulley outside diameter: 57.5mm
• Pulley section: 6 groove
• Mount leg thickness: 51mm
• Mount centre-to-centre: 139mm
• Pivot hole diameter: 11mm
• Adjusting hole diameter: 11mm

Fitment guidance

• Suits unit make: Mitsubishi
• Fitment list includes Holden, Holden Calais, Holden Caprice, Holden Commodore, Holden Statesman, HSV, HSV ClubSport, HSV Grange, HSV GTS, HSV Maloo, HSV Senator and HSV W427
• Model and year coverage is listed in the supplied fitment data, including Holden Calais and HSV ClubSport applications across multiple years
• Because the fitment list is broad, confirm the part number MXA2105 and the mounting and pulley measurements before ordering

Application and Buying Notes

Before buying, match the alternator against the vehicle’s existing unit by part number MXA2105, Pin Code IR127, and the physical dimensions listed here. The 12V, 140A output, 6 groove pulley, and single leg mounting style all need to align with the original setup for the job to go smoothly.

The mount details are important on this alternator. Check the 139mm mount centre-to-centre dimension, 51mm mount leg thickness, and the 11mm pivot and adjusting holes against the vehicle’s brackets and hardware. If those points do not match, the alternator may not sit correctly even if the vehicle is in the broader fitment list.

This is a Mitsubishi style alternator and is stated to suit Mitsubishi units, with additional fitment coverage listed for a range of Holden and HSV applications. That makes the vehicle application worth confirming carefully, especially where there are model-year differences or where the existing alternator has been replaced previously.

If you are replacing an older unit, compare the pulley section, pulley outside diameter, and regulator type as well as the part number. The internal regulator and 6 groove pulley are fixed specification points here, so they should be checked against the original part rather than assumed from the vehicle badge alone.

The alternator is sold as a new unit and is backed by OEX warranty cover of 3 years for passenger use and 1 year for commercial use. Warranty cover is useful, but it does not replace fitment checking, so the safest approach is to verify the measurements and application details before the order is placed.

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 MXA2105 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, Mount Leg Thickness 51mm, Pivot Hole Diameter 11, Pulley Outside Diameter 57.5mm, Regulator Type Internal, Voltage 12, Item Type Alternator, New / Reman. New.

Additional published details for cross-checking include Product Group 2 ALTERNATORS, Part No. MXA2105, Brand OEX, Description OEX Alternator 12V 140A Mitsubishi Style, Adjusting Hole Diameter 11, Pin Code IR127, Power Rating (Amp) 140, Pulley Section 6 Groove, Suits Unit Make Mitsubishi.

OEX Alternator 12V 140A Mitsubishi Style. Part number MXA2105 should be checked first. Listed voltage is 12. Listed output rating is 140. These details form the core reference points used by parts interpreters when confirming the correct replacement.

Mount style is Single Leg. Regulator type is Internal. Pulley configuration is 6 Groove. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number MXA2105, 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 140 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Available application references include HOLDEN CALAIS, HOLDEN CALAIS 2006, HOLDEN CALAIS 2007, HOLDEN CALAIS 2008, HSV CLUBSPORT, HSV CLUBSPORT 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 compatibility using Part No. MXA2105, Pin Code IR127, the Mitsubishi style application, and the measured mounting and pulley details before purchase.

FAQ

What is the part number for this alternator?

The part number is MXA2105. The pin code is IR127.

Is this alternator new or remanufactured?

It is listed as new, not remanufactured.

What is the voltage and output rating?

It is a 12V alternator with a 140A power rating.

What type of regulator does it have?

It has an internal regulator.

What pulley does it use?

It has a 6 groove pulley with a 57.5mm outside diameter.

What warranty is listed?

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