OEX Alternator 12V 120A Mitsubishi Style MXA2091

The OEX Alternator MXA2091 is a new 12V, 120A unit in Mitsubishi style, supplied as each. It suits units with a single-leg alternator mount and uses a 6-groove pulley, with a 55mm pulley outside diameter and a 50.5mm mount leg thickness.

This alternator is identified with pin code IR193 and internal regulator type. The mount centre-to-centre measurement is 138mm, and the adjusting hole diameter is 10.5mm. Those dimensions matter when matching the physical alternator layout, not just the electrical output.

OEX products are sourced from market leading Original Equipment Manufacturers and aftermarket suppliers, and the brand states its products are sourced from ISO9001 certified factories. The listed warranty is 3yr Passenger and 1yr Commercial, which gives a clear reference point for typical use in a passenger or commercial application.

Key Features

• New alternator, not remanufactured
• 12V charging system
• 120A power rating
• Mitsubishi style unit
• Single-leg alternator mount
• 6-groove pulley

Specifications

• Part number: MXA2091
• Brand: OEX
• Product type: Alternator
• Voltage: 12V
• Current output: 120A
• Pulley section: 6 groove
• Pulley outside diameter: 55mm
• Mount leg thickness: 50.5mm

Fitment guidance

• Recorded fitment references include Holden Colorado and Holden Rodeo applications.
• Sample applications listed include Holden Colorado 2008, 2009, 2010, 2011 and 2012.
• Sample applications listed also include Holden Rodeo 2006, 2007 and 2008.
• Fitment should still be checked against the part number and alternator dimensions before ordering.

Application and Buying Notes

When checking this alternator, start with the part number MXA2091 and confirm the unit is Mitsubishi style with a single-leg mount. The listed 12V, 120A output and internal regulator type need to line up with the vehicle’s charging system requirements, because a matching physical shape alone is not enough.

The pulley details are also important. This unit uses a 6-groove pulley with a 55mm outside diameter, so belt profile and pulley size need to be checked against the existing alternator before purchase. The mount leg thickness of 50.5mm, centre-to-centre measurement of 138mm, and 10.5mm adjusting hole diameter are practical checkpoints for fit.

If you are replacing a failed alternator, compare the old unit directly where possible. The pin code IR193, the single-leg alternator mount, and the stated weight of 6.04kg can help narrow down the correct match when there are similar-looking alternatives in the same vehicle range. For Holden Colorado and Holden Rodeo references, treat those as application guidance rather than a substitute for checking the exact vehicle and original unit.

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 MXA2091 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 50.5mm, Power Rating (Amp) 120, Pulley Section 6 Groove, Suits Unit Make Mitsubishi, Alternator Mount Single Leg, New / Reman. New.

Additional published details for cross-checking include Product Group 2 ALTERNATORS, Part No. MXA2091, Brand OEX, Description OEX Alternator 12V 120A Mitsubishi Style, Adjusting Hole Diameter 10.5, Pin Code IR193, Pulley Outside Diameter 55mm, Regulator Type Internal, Voltage 12, Mount Cnt to Cnt 138mm.

OEX Alternator 12V 120A Mitsubishi Style. Part number MXA2091 should be checked first. Listed voltage is 12. Listed output rating is 120. 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 MXA2091, 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 120 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Available application references include HOLDEN COLORADO, HOLDEN COLORADO 2008, HOLDEN COLORADO 2009, HOLDEN COLORADO 2010. 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 number MXA2091, the Mitsubishi style housing, single-leg mount, 12V 120A output, IR193 pin code, and the listed pulley and mounting dimensions before fitting.

FAQ

Is this alternator new or remanufactured?

It is listed as new. For this listing, part number MXA2091 is the main reference point. Listed voltage is 12. Listed output rating is 120. Published fitment references include HOLDEN COLORADO, HOLDEN COLORADO 2008, HOLDEN COLORADO 2009. These details should still be checked against the original unit before ordering.

What is the electrical output of this alternator?

The alternator is rated at 12V and 120A. For this listing, part number MXA2091 is the main reference point. Listed voltage is 12. Listed output rating is 120. Published fitment references include HOLDEN COLORADO, HOLDEN COLORADO 2008, HOLDEN COLORADO 2009. These details should still be checked against the original unit before ordering.

What pulley does this alternator use?

It uses a 6-groove pulley with a 55mm outside diameter. For this listing, part number MXA2091 is the main reference point. Listed voltage is 12. Listed output rating is 120. Published fitment references include HOLDEN COLORADO, HOLDEN COLORADO 2008, HOLDEN COLORADO 2009. These details should still be checked against the original unit before ordering.

What mounting setup does it have?

It has a single-leg alternator mount, with a 50.5mm mount leg thickness and 138mm mount centre-to-centre measurement. For this listing, part number MXA2091 is the main reference point. Listed voltage is 12. Listed output rating is 120. Published fitment references include HOLDEN COLORADO, HOLDEN COLORADO 2008, HOLDEN COLORADO 2009. These details should still be checked against the original unit before ordering.

What vehicles are mentioned in the fitment information?

The fitment references include Holden Colorado and Holden Rodeo applications, with sample entries for Holden Colorado 2008 to 2012 and Holden Rodeo 2006 to 2008. For this listing, part number MXA2091 is the main reference point. Listed voltage is 12. Listed output rating is 120. Published fitment references include HOLDEN COLORADO, HOLDEN COLORADO 2008, HOLDEN COLORADO 2009. These details should still be checked against the original unit before ordering.

What warranty is listed?

The listed warranty is 3yr Passenger and 1yr Commercial. For this listing, part number MXA2091 is the main reference point. Listed voltage is 12. Listed output rating is 120. Published fitment references include HOLDEN COLORADO, HOLDEN COLORADO 2008, HOLDEN COLORADO 2009. These details should still be checked against the original unit before ordering.