OEX Alternator 12V 130A Denso Style DXA4085

The OEX Alternator DXA4085 is a new 12V, 130A unit built in a Denso style configuration for vehicles that call for a twin leg alternator mount. Key physical details include a 7 groove pulley with a 58mm outside diameter, 51mm inside mounting legs, a 160mm mounting centre to centre measurement, and an 11mm / M10 pivot hole diameter.

It uses an internal regulator and is supplied as each unit. At 5.2kg, this alternator is sized as a replacement rotating electrical component where the mounting pattern, pulley section, voltage, and output rating all need to match the application closely.

OEX identifies this part with part number DXA4085 and pin code IR228. The listed warranty is 3 years for passenger use and 1 year for commercial use, which is worth noting if the vehicle sees heavier duty service or longer operating hours.

Key Features

• 12V alternator with 130A output
• New unit, not remanufactured
• Denso style application
• Internal regulator
• Twin leg alternator mount
• 7 groove pulley

Specifications

• Brand: OEX
• Product type: Alternator
• Voltage: 12V
• Power rating: 130A
• Unit of measure: Each
• Pulley outside diameter: 58mm
• Pulley section: 7 groove
• Inside mounting legs: 51mm

Fitment guidance

• Verified application data is provided for Toyota vehicles, including Toyota Hiace, Toyota Hilux, and Toyota Land Cruiser Prado.
• Sample application references include Toyota Hiace 2019 and Toyota Hilux 2015 through 2020.
• Fitment should still be checked against the vehicle’s alternator mount, pulley arrangement, and the listed part number DXA4085 before purchase.

Application and Buying Notes

When replacing a Denso style alternator, the important checks are the mounting style, pulley section, output rating, and regulator type. This unit is 12V, 130A, has a 7 groove pulley, and uses an internal regulator, so those details should be matched against the vehicle and the removed part before ordering.

The physical dimensions also matter. The alternator has 51mm inside mounting legs, a 160mm mount centre to centre measurement, an 11mm / M10 pivot hole, and a 12.5mm adjusting hole. Those measurements help confirm the bracket and bolt arrangement are compatible, especially where several similar alternators exist.

The listed weight is 5.2kg and the alternator is supplied new. If you are comparing it with the existing unit, check the part number DXA4085 and pin code IR228, along with the vehicle’s current mounting layout and pulley configuration, to avoid ordering the wrong version.

For Toyota applications, the provided fitment data includes Hiace, Hilux, and Land Cruiser Prado references, but the exact match still depends on the vehicle build and the alternator already fitted. If the current unit differs in pulley section, mounting, or electrical configuration, do not rely on the badge alone when confirming suitability.

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 DXA4085 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 11 / M10, Pulley Outside Diameter 58mm, Regulator Type Internal, Voltage 12, Mount Cnt to Cnt 160mm, Weight 5.2kg.

Additional published details for cross-checking include Product Group 1 ROTATING ELECTRICAL, Part No. DXA4085, Brand OEX, Description OEX Alternator 12V 130A Denso Style, Adjusting Hole Diameter 12.5, Pin Code IR228, Power Rating (Amp) 130, Pulley Section 7 Groove, Suits Unit Make Denso, Alternator Mount Twin Leg.

OEX Alternator 12V 130A Denso Style. Part number DXA4085 should be checked first. Listed voltage is 12. Listed output rating is 130. 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 DXA4085, 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 130 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Compatibility note: Confirm fitment using the part number DXA4085, pin code IR228, and the listed measurements and application details before ordering. Vehicle badge alone is not enough to confirm compatibility.

FAQ

Is this alternator new or remanufactured?

It is listed as new. For this listing, part number DXA4085 is the main reference point. Listed voltage is 12. Listed output rating is 130. Published fitment references include TOYOTA HIACE, TOYOTA HIACE 2019, TOYOTA HILUX. These details should still be checked against the original unit before ordering.

What voltage and amperage does it have?

This alternator is 12V and rated at 130A. For this listing, part number DXA4085 is the main reference point. Listed voltage is 12. Listed output rating is 130. Published fitment references include TOYOTA HIACE, TOYOTA HIACE 2019, TOYOTA HILUX. These details should still be checked against the original unit before ordering.

What type of regulator does it use?

It uses an internal regulator. For this listing, part number DXA4085 is the main reference point. Listed voltage is 12. Listed output rating is 130. Published fitment references include TOYOTA HIACE, TOYOTA HIACE 2019, TOYOTA HILUX. These details should still be checked against the original unit before ordering.

What pulley does it have?

It has a 7 groove pulley with a 58mm outside diameter. For this listing, part number DXA4085 is the main reference point. Listed voltage is 12. Listed output rating is 130. Published fitment references include TOYOTA HIACE, TOYOTA HIACE 2019, TOYOTA HILUX. These details should still be checked against the original unit before ordering.

Which part number should I use to confirm it?

The listed part number is DXA4085, and the pin code is IR228. For this listing, part number DXA4085 is the main reference point. Listed voltage is 12. Listed output rating is 130. Published fitment references include TOYOTA HIACE, TOYOTA HIACE 2019, TOYOTA HILUX. These details should still be checked against the original unit before ordering.

What warranty is listed for this alternator?

The warranty is listed as 3 years for passenger use and 1 year for commercial use. For this listing, part number DXA4085 is the main reference point. Listed voltage is 12. Listed output rating is 130. Published fitment references include TOYOTA HIACE, TOYOTA HIACE 2019, TOYOTA HILUX. These details should still be checked against the original unit before ordering.