OEX Alternator 12V 140A Mitsubishi Style MXA2107

The OEX MXA2107 is a new 12V alternator rated at 140A, built in Mitsubishi style and listed with a pad mount, 6 groove pulley and internal regulator. It is supplied as each unit, with a mount leg thickness of 50mm, mount hole diameter of 10/10/12, pulley outside diameter of 52mm and pin code IR212.

This alternator is one of two identical looking units with different regulator functions, so the OE number must be checked before ordering. That warning is important here because the part can look the same externally while the regulator setup differs, which can affect whether it is the correct replacement for the vehicle.

The unit is identified as OEX part number MXA2107 and carries the note to confirm by OE number. It suits Mitsubishi make applications and is listed under rotating electrical as a 12V, 140 amp alternator weighing 5.98kg.

Key Features

• New alternator, supplied each
• 12V, 140A output
• Mitsubishi style unit
• Internal regulator
• 6 groove pulley
• Pad mount design

Specifications

• Part number: MXA2107
• Brand: OEX
• Voltage: 12V
• Output: 140A
• Regulator type: Internal
• Pulley section: 6 groove
• Pulley outside diameter: 52mm
• Mount leg thickness: 50mm

Fitment guidance

• Suits unit make: Mitsubishi
• Fitment data includes Holden, Holden Calais and Holden Commodore application listings
• Holden Calais applications are listed across 2008 to 2017 in the provided fitment preview

Application and Buying Notes

Before ordering, compare the vehicle’s OE number with MXA2107 and check the regulator function carefully. This alternator is described as one of two identical looking units with different regulator functions, so external appearance alone is not a reliable check. The 12V, 140A rating and internal regulator details should also match the replacement unit.

The 6 groove pulley, 52mm pulley outside diameter and pad mount layout are practical checks when comparing the old unit to this alternator. The mount leg thickness is 50mm and the mount hole diameter is 10/10/12, so any mismatch in mounting dimensions should be treated as a warning sign before fitting.

This is a Mitsubishi style alternator supplied under OEX part number MXA2107. The listed fitment preview includes Holden, Holden Calais and Holden Commodore applications, but the safest way to confirm suitability is still to match the OE number and application details against the vehicle currently fitted with the alternator.

If the vehicle is used commercially, the warranty listed is 1 year for commercial use, while passenger use is listed at 3 years. That difference matters when planning the purchase, especially for vehicles that see higher electrical load or regular service use.

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 MXA2107 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 50mm, Power Rating (Amp) 140, Pulley Section 6 Groove, Suits Unit Make Mitsubishi, Note One of two identical looking alternators, both with different regulator functions. Confirm by OE number., Item Type Alternator, Weight 5.98kg.

Additional published details for cross-checking include Product Group 1 ROTATING ELECTRICAL, Part No. MXA2107, Brand OEX, Description OEX Alternator 12V 140A Mitsubishi Style - See Note, Mount Hole Diameter 10/10/12, Pin Code IR212, Pulley Outside Diameter 52mm, Regulator Type Internal, Voltage 12, Alternator Mount Pad.

OEX Alternator 12V 140A Mitsubishi Style - See Note. Part number MXA2107 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 Pad. 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 MXA2107, 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.

Compatibility note: Confirm fitment by matching the OE number, regulator function, pulley setup and mounting details before purchase. The same-looking alternator may use a different regulator arrangement, so the part number and application data should be checked carefully against the existing unit.

FAQ

What is the part number for this alternator?

The OEX part number is MXA2107. For this listing, part number MXA2107 is the main reference point. Listed voltage is 12. Listed output rating is 140. Published fitment references include HOLDEN CALAIS, HOLDEN CALAIS 2008, HOLDEN CALAIS 2009. These details should still be checked against the original unit before ordering.

Is this alternator new or remanufactured?

It is listed as new. For this listing, part number MXA2107 is the main reference point. Listed voltage is 12. Listed output rating is 140. Published fitment references include HOLDEN CALAIS, HOLDEN CALAIS 2008, HOLDEN CALAIS 2009. These details should still be checked against the original unit before ordering.

What voltage and output does it have?

It is a 12V alternator rated at 140A. For this listing, part number MXA2107 is the main reference point. Listed voltage is 12. Listed output rating is 140. Published fitment references include HOLDEN CALAIS, HOLDEN CALAIS 2008, HOLDEN CALAIS 2009. These details should still be checked against the original unit before ordering.

What type of regulator does it use?

It has an internal regulator. For this listing, part number MXA2107 is the main reference point. Listed voltage is 12. Listed output rating is 140. Published fitment references include HOLDEN CALAIS, HOLDEN CALAIS 2008, HOLDEN CALAIS 2009. These details should still be checked against the original unit before ordering.

What pulley setup is listed?

It has a 6 groove pulley with a 52mm outside diameter. For this listing, part number MXA2107 is the main reference point. Listed voltage is 12. Listed output rating is 140. Published fitment references include HOLDEN CALAIS, HOLDEN CALAIS 2008, HOLDEN CALAIS 2009. These details should still be checked against the original unit before ordering.

What should I check before buying?

Confirm the OE number, regulator function, mounting layout and pulley details. The listing notes that one of two identical looking alternators can have a different regulator function. For this listing, part number MXA2107 is the main reference point. Listed voltage is 12. Listed output rating is 140. Published fitment references include HOLDEN CALAIS, HOLDEN CALAIS 2008, HOLDEN CALAIS 2009. These details should still be checked against the original unit before ordering.