OEX Alternator 12V 90A Mitsubishi Style MXA2051

The OEX MXA2051 is a new 12V alternator rated at 90A and described as Mitsubishi style, supplied as an each unit for rotating electrical applications. It uses an internal regulator, a 6 groove pulley section, and a pad alternator mount, so the physical mounting and drive arrangement need to be checked against the vehicle before purchase.

Key dimensions include 66mm inside mounting legs, a 171mm mount centre-to-centre measurement, a 10mm pivot hole diameter, and an M10 x 1.25 adjusting hole diameter. The pulley outside diameter is 55mm, and the unit weighs 5.1kg, which are all useful checkpoints when comparing against the existing alternator.

This alternator is listed with OEX part number MXA2051, OEM number 1145715-PO, pin code IR89, and suits Mitsubishi unit make. Those identifiers are the safest way to confirm you are comparing the correct replacement, especially where the vehicle has had previous electrical or bracket changes.

Key Features

• 12V, 90A alternator
• Mitsubishi style replacement
• Internal regulator
• 6 groove pulley section
• Pad mount alternator design
• New unit, not remanufactured

Specifications

• Type: Alternator
• Brand: OEX
• Part No.: MXA2051
• OEM Number: 1145715-PO
• Voltage: 12V
• Power Rating: 90A
• Regulator Type: Internal
• Pulley Section: 6 groove

Fitment guidance

• FORD: KA, KA 1999, KA 2000, KA 2001, KA 2002, plus other listed applications

Application and Buying Notes

Before ordering, compare the replacement against the vehicle’s original alternator using the part number MXA2051, OEM number 1145715-PO, and the listed physical measurements. The 66mm inside mounting legs, 171mm mount centre-to-centre dimension, 10mm pivot hole, and M10 x 1.25 adjusting hole are the most practical checks for confirming the unit will physically mount correctly.

The pulley and electrical setup also need to match. This unit has a 6 groove pulley section, a 55mm pulley outside diameter, a 12V system, and an internal regulator. If the vehicle uses a different belt profile, pulley offset, or regulator arrangement, the alternator may not be suitable even if the mounting points look close.

The unit is described as Mitsubishi style and suits Mitsubishi unit make, but that alone is not enough to confirm direct fitment. Matching shape and general style can help narrow the search, yet the safest approach is to verify the old alternator against the OEX specifications, particularly where the vehicle has had previous repairs or electrical upgrades.

For commercial use, the warranty listed is 1 year, while passenger use carries a 3 year warranty. That distinction matters when you are choosing the part for a workshop job or a private vehicle, so it is worth confirming how the vehicle will be used before purchase. The unit is new and weighs 5.1kg, which can also help when comparing like-for-like replacements at the counter.

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 MXA2051 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 66mm, Pivot Hole Diameter 10, Pulley Outside Diameter 55mm, Regulator Type Internal, Voltage 12, Mount Cnt to Cnt 171mm, OEM Number 1145715-PO.

Additional published details for cross-checking include Product Group 2 ALTERNATORS, Part No. MXA2051, Brand OEX, Description OEX Alternator 12V 90A Mitsubishi Style, Adjusting Hole Diameter M10 x 1.25, Pin Code IR89, Power Rating (Amp) 90, Pulley Section 6 Groove, Suits Unit Make Mitsubishi.

OEX Alternator 12V 90A Mitsubishi Style. Part number MXA2051 should be checked first. Listed voltage is 12. Listed output rating is 90. 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 MXA2051, 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 90 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Compatibility note: Confirm fitment by matching the OEX part number MXA2051, OEM number 1145715-PO, Mitsubishi style application details, and the measured mounting and pulley specifications against the original alternator before ordering.

FAQ

What is the part number for this alternator?

The OEX part number is MXA2051. The OEM number listed is 1145715-PO. For this listing, part number MXA2051 is the main reference point. Listed voltage is 12. Listed output rating is 90. Published fitment references include FORD KA, FORD KA 1999, FORD KA 2000. These details should still be checked against the original unit before ordering.

What voltage and output does it have?

It is a 12V alternator with a 90A power rating. For this listing, part number MXA2051 is the main reference point. Listed voltage is 12. Listed output rating is 90. Published fitment references include FORD KA, FORD KA 1999, FORD KA 2000. These details should still be checked against the original unit before ordering.

Is it new or remanufactured?

It is listed as new, not remanufactured. For this listing, part number MXA2051 is the main reference point. Listed voltage is 12. Listed output rating is 90. Published fitment references include FORD KA, FORD KA 1999, FORD KA 2000. These details should still be checked against the original unit before ordering.

What pulley setup does it use?

It has a 6 groove pulley section and a pulley outside diameter of 55mm. For this listing, part number MXA2051 is the main reference point. Listed voltage is 12. Listed output rating is 90. Published fitment references include FORD KA, FORD KA 1999, FORD KA 2000. These details should still be checked against the original unit before ordering.

What mounting measurements are listed?

The listed mounting details are 66mm inside mounting legs, 171mm mount centre-to-centre, a 10mm pivot hole diameter, and an M10 x 1.25 adjusting hole diameter. For this listing, part number MXA2051 is the main reference point. Listed voltage is 12. Listed output rating is 90. Published fitment references include FORD KA, FORD KA 1999, FORD KA 2000. These details should still be checked against the original unit before ordering.

What warranty applies?

The warranty is listed as 3 years for passenger use and 1 year for commercial use. For this listing, part number MXA2051 is the main reference point. Listed voltage is 12. Listed output rating is 90. Published fitment references include FORD KA, FORD KA 1999, FORD KA 2000. These details should still be checked against the original unit before ordering.