OEX Alternator 12V 130A Denso Style DXA557

The OEX Alternator DXA557 is a 12V, 130A unit built in a Denso style configuration for applications that use a Denso-type alternator with a twin leg mount. It is a new alternator, not remanufactured, and it uses an internal regulator for the charging system setup.

Key physical details include a 7 groove pulley, 52mm pulley outside diameter, 31mm inside mounting legs, and a twin leg alternator mount. The mounting and pulley dimensions matter when matching the replacement to the vehicle, especially where the original unit has specific bracket spacing and belt alignment requirements.

This alternator is listed with part number DXA557 and pin code IR115. For buyers comparing options, those identifiers are useful because alternators can share a similar appearance while differing in mount style, regulator type, pulley arrangement, or electrical output.

Key Features

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

Specifications

• Brand: OEX
• Type: Alternator
• Voltage: 12V
• Power rating: 130A
• New / reman.: New
• Regulator type: Internal
• Suits unit make: Denso
• Alternator mount: Twin leg

Fitment information

• Toyota Hilux applications are listed in the supplied fitment data, including model years 2005 through 2015.
• Toyota Land Cruiser Prado is listed in the supplied fitment data.
• Use the part number DXA557, the Denso style specification, and the mounting and pulley measurements to confirm the correct match before ordering.

Application and Buying Notes

Alternators need to match more than just voltage, so the DXA557 should be checked against the original unit for mount style, pulley count, and regulator type. This one is a 12V, 130A alternator with a 7 groove pulley and internal regulator, so those details are the first points to confirm on the vehicle.

The listed mounting dimensions are important for fit: inside mounting legs are 31mm, mount centres B are 178mm, mount centre to centre is 157mm, and the pivot hole is M10x1.25 / 11. If the bracket spacing or bolt sizes differ from the existing alternator, it is not the right replacement.

Because this is a Denso style alternator, the best way to verify compatibility is to compare the original unit, part number, and mount layout rather than relying on appearance alone. The pin code IR115 is another useful reference when checking the electrical specification against the vehicle application.

The alternator weighs 5.68kg and is supplied as a new unit. That can matter where a buyer is comparing a fresh replacement against a rebuilt unit, especially for work vehicles or daily drivers where consistent charging system performance and correct mechanical fit are the main priorities.

OEX notes a 3 year passenger and 1 year commercial warranty. Warranty terms are useful, but they do not replace fitment checking. The correct approach is still to confirm the vehicle application, the part number DXA557, and the physical measurements 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 DXA557 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 31mm, Pin Code IR115, Power Rating (Amp) 130, 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. DXA557, Brand OEX, Description OEX Alternator 12V 130A Denso Style, Adjusting Hole Diameter 9 / 11, Mount Centres B 178mm, Pivot Hole Diameter M10x1.25 / 11, Pulley Outside Diameter 52mm, Regulator Type Internal.

OEX Alternator 12V 130A Denso Style. Part number DXA557 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 DXA557, 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.

Available application references include TOYOTA HILUX, TOYOTA HILUX 2005, TOYOTA HILUX 2006, TOYOTA HILUX 2007. 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.

The listed warranty is 3yr Passenger 1yr Commercial. Warranty terms should be considered alongside correct application and part identification, as warranty does not replace fitment confirmation.

Compatibility note: Please confirm fitment by matching part number DXA557, Denso style application details, 12V charging system requirements, and the listed mounting and pulley measurements to the existing alternator before purchase.

FAQ

Is this alternator new or remanufactured?

This alternator is listed as new, not remanufactured.

What is the voltage and output rating?

It is a 12V alternator with a 130A power rating.

What type of regulator does it use?

It uses an internal regulator.

What pulley setup does it have?

It has a 7 groove pulley with a 52mm pulley outside diameter.

What part number should I use to confirm the listing?

The listed part number is DXA557.

Which vehicles are listed in the fitment data?

Toyota Hilux applications are listed, including 2005 through 2015 model years, and Toyota Land Cruiser Prado is also listed. Final confirmation should still be made using the part number and measurements.