OEX Alternator 12V 80A Denso Style DXA4099

The OEX Alternator DXA4099 is a 12V, 80A unit with a Denso style design and a twin leg mount. It is supplied new, with an internal regulator, a 6 groove pulley, and a 55mm pulley outside diameter, which are all useful checks when matching an alternator to the vehicle.

This alternator is listed with inside mounting legs of 51mm, a pivot hole diameter of M10 x 1.25, an adjusting hole diameter of M8 x 1.25, and a centre-to-centre mount measurement of 173mm. Those dimensions matter when comparing the physical fit to the original unit already fitted to the vehicle.

OEX positions this alternator range around quality and reliability at aftermarket level, with manufacturing and quality control supported by ISO9001 certified factories. The part is backed by a 3 year passenger / 1 year commercial warranty, which gives a useful reference for normal use where the application match is correct.

Key Features

• 12V, 80A alternator
• Denso style unit
• Twin leg alternator mount
• Internal regulator
• New unit, not remanufactured
• 6 groove pulley

Specifications

• Brand: OEX
• Part No.: DXA4099
• Voltage: 12V
• Output: 80A
• Regulator type: Internal
• Alternator mount: Twin leg
• Unit of measure: Each
• New / Reman.: New

Fitment guidance

• TOYOTA: COROLLA, COROLLA 2012, COROLLA 2013, COROLLA 2014, COROLLA 2015, plus other listed applications

Application and Buying Notes

The most important checks for this alternator are the part number DXA4099, the Denso style design, the twin leg mount, and the listed measurements. If the vehicle’s original alternator differs in mounting style or hole spacing, the unit may not line up correctly even if the electrical output appears similar.

This alternator is 12V and rated at 80A, so it should only be considered where those electrical details match the vehicle’s charging system requirements. The internal regulator, 6 groove pulley, 55mm pulley outside diameter, and 173mm mount centre-to-centre are all practical comparison points against the existing alternator before ordering.

The note supplied with this part states that it is not suitable for COROLLA ZRE172R 1.8L 2ZR-FE with L/DFM regulator function. For that application, DXA4108 is the listed alternative. That is a specific compatibility point and should be checked carefully if the vehicle falls into that Corolla range.

Because alternators can vary by regulator function, mount type, and pulley arrangement within the same model line, matching the original unit is more reliable than relying on the vehicle badge alone. Confirm the old alternator’s mount style, the inside mounting leg width of 51mm, and the hole sizes before you commit to purchase.

The warranty is 3 years for passenger use and 1 year for commercial use, which is helpful context when the part is fitted to the correct application and installed properly. If there is any uncertainty, compare the removed unit against the listed measurements and part number before fitting.

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 DXA4099 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 51mm, Pivot Hole Diameter M10 x 1.25, Pulley Outside Diameter 55mm, Regulator Type Internal, Voltage 12, Alternator Mount Twin Leg, New / Reman. New.

Additional published details for cross-checking include Product Group 2 ALTERNATORS, Part No. DXA4099, Brand OEX, Description OEX Alternator 12V 80A Denso Style, Adjusting Hole Diameter M8 x 1.25, Pin Code IR169, Power Rating (Amp) 80, Pulley Section 6 Groove, Suits Unit Make Denso.

OEX Alternator 12V 80A Denso Style. Part number DXA4099 should be checked first. Listed voltage is 12. Listed output rating is 80. 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 6 Groove. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number DXA4099, 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 80 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Available application references include TOYOTA COROLLA, TOYOTA COROLLA 2012, TOYOTA COROLLA 2013, TOYOTA COROLLA 2014. 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: Please confirm compatibility using part number DXA4099 and the listed application details, including the Denso style design, twin leg mount, 12V 80A output, and the COROLLA ZRE172R 1.8L 2ZR-FE L/DFM regulator note before ordering.

FAQ

What is the part number for this alternator?

The part number is DXA4099.

What voltage and output does this alternator have?

It is a 12V alternator rated at 80A.

Is this a new or remanufactured unit?

It is listed as a new unit.

What type of regulator does it use?

It uses an internal regulator.

What mounting and pulley details are listed?

It has a twin leg mount, inside mounting legs of 51mm, a pivot hole diameter of M10 x 1.25, an adjusting hole diameter of M8 x 1.25, a 6 groove pulley, and a 55mm pulley outside diameter.

Is there any known exception to check before buying?

Yes. It is not suitable for COROLLA ZRE172R 1.8L 2ZR-FE with L/DFM regulator function. For that application, DXA4108 is the listed alternative.