OEX Alternator 12V 100A Denso Style DXA4135

The OEX Alternator DXA4135 is a new 12V alternator rated at 100A, built in a Denso style and fitted with an internal regulator. It uses a twin leg alternator mount, a 7 groove pulley, and weighs 5.1kg, so it is important to match the physical mounting and belt arrangement before ordering.

This unit suits Denso applications and has an inside mounting leg measurement of 51mm, a mount centre to centre measurement of 160mm, and an adjusting hole diameter of 12.5mm. Those dimensions matter when checking bracket alignment, bolt spacing, and whether the alternator will sit correctly in the vehicle.

OEX lists this alternator under part number DXA4135, with pin code IR201 and pulley outside diameter of 58mm. It is covered by a 3 year warranty for passenger use and 1 year for commercial use, which gives a clear reference point for buyers comparing replacement units.

Key Features

• 12V, 100A alternator
• New unit, not remanufactured
• Denso style design
• Internal regulator
• Twin leg alternator mount
• 7 groove pulley

Specifications

• Brand: OEX
• Product type: Alternator
• Voltage: 12V
• Power rating: 100A
• Unit condition: New
• Suits unit make: Denso
• Alternator mount: Twin leg
• Inside mounting legs: 51mm

Fitment guidance

• Toyota Fortuner
• Toyota Hilux
• Toyota applications listed in the fitment data for Fortuner and Hilux variants from 2015 to 2020

Application and Buying Notes

Before purchasing, check the alternator mounting style, pulley type, and dimensions against the unit you are replacing. The key points for this OEX DXA4135 are the twin leg mount, 51mm inside mounting legs, 160mm mount centre to centre, 12.5mm adjusting hole diameter, and 7 groove pulley with a 58mm outside diameter.

This alternator is rated at 12V and 100A, so it should only be considered where those electrical specifications match the vehicle’s original requirement. The internal regulator is also important, because regulator type must align with the charging system used in the vehicle.

If you are comparing alternatives, part number DXA4135 and pin code IR201 are useful identifiers to cross-check before ordering. The fact that this is a Denso style alternator and suits Denso applications helps narrow the search, but the physical measurements still need to match the existing setup.

The warranty is 3 years for passenger use and 1 year for commercial use, which may be relevant if the vehicle sees heavier duty service. As with any alternator replacement, inspect the belt condition, wiring connections, and mounting points at the same time so the new unit is not being fitted to worn or damaged hardware.

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 DXA4135 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, Power Rating (Amp) 100, Pulley Section 7 Groove, Suits Unit Make Denso, Alternator Mount Twin Leg, New / Reman. New.

Additional published details for cross-checking include Product Group 2 ALTERNATORS, Part No. DXA4135, Brand OEX, Description OEX Alternator 12V 100A Denso Style, Adjusting Hole Diameter 12.5, Pin Code IR201, Pulley Outside Diameter 58mm, Regulator Type Internal, Voltage 12, Mount Cnt to Cnt 160mm.

OEX Alternator 12V 100A Denso Style. Part number DXA4135 should be checked first. Listed voltage is 12. Listed output rating is 100. 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 7 Groove. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number DXA4135, 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 100 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Compatibility note: Confirm fitment by checking part number DXA4135, pin code IR201, Denso application details, and the listed mounting and pulley measurements against the existing alternator before ordering.

FAQ

Is this alternator new or remanufactured?

This OEX alternator is listed as new, not remanufactured. For this listing, part number DXA4135 is the main reference point. Listed voltage is 12. Listed output rating is 100. Published fitment references include TOYOTA FORTUNER, TOYOTA FORTUNER 2015, TOYOTA FORTUNER 2020. These details should still be checked against the original unit before ordering.

What is the output rating of this alternator?

It is rated at 100A and operates on 12V. For this listing, part number DXA4135 is the main reference point. Listed voltage is 12. Listed output rating is 100. Published fitment references include TOYOTA FORTUNER, TOYOTA FORTUNER 2015, TOYOTA FORTUNER 2020. These details should still be checked against the original unit before ordering.

What regulator type does it use?

This unit has an internal regulator. For this listing, part number DXA4135 is the main reference point. Listed voltage is 12. Listed output rating is 100. Published fitment references include TOYOTA FORTUNER, TOYOTA FORTUNER 2015, TOYOTA FORTUNER 2020. These details should still be checked against the original unit before ordering.

What mounting style does it have?

It uses a twin leg alternator mount with 51mm inside mounting legs and 160mm mount centre to centre. For this listing, part number DXA4135 is the main reference point. Listed voltage is 12. Listed output rating is 100. Published fitment references include TOYOTA FORTUNER, TOYOTA FORTUNER 2015, TOYOTA FORTUNER 2020. These details should still be checked against the original unit before ordering.

What pulley setup does it have?

It has a 7 groove pulley with a 58mm outside diameter. For this listing, part number DXA4135 is the main reference point. Listed voltage is 12. Listed output rating is 100. Published fitment references include TOYOTA FORTUNER, TOYOTA FORTUNER 2015, TOYOTA FORTUNER 2020. These details should still be checked against the original unit before ordering.

What warranty applies to this alternator?

The warranty is 3 years for passenger use and 1 year for commercial use. For this listing, part number DXA4135 is the main reference point. Listed voltage is 12. Listed output rating is 100. Published fitment references include TOYOTA FORTUNER, TOYOTA FORTUNER 2015, TOYOTA FORTUNER 2020. These details should still be checked against the original unit before ordering.