OEX Alternator 12V 50A Denso Style DXA406

The OEX Alternator DXA406 is a 12V unit with a 50A description and a 55A power rating, built in a Denso style for applications that require an external regulator. It is a new alternator with a twin leg mount, 76mm inside mounting legs, and a 70mm pulley outside diameter.

This alternator is identified with part number DXA406 and pin code ER1. Key dimensions include a 10mm pivot hole diameter, M8x1.25 adjusting hole diameter, and 171mm mount centre to centre. Those measurements are the details that matter when matching the unit to the vehicle or equipment already fitted.

OEX lists this as a rotating electrical product suited to Denso applications. The unit weighs 4.8kg and uses a pulley section A. If you are replacing an existing alternator, the part number, regulator type, mounting style, and dimensions should be checked carefully before ordering.

Key Features

• 12V alternator, 50A description, 55A power rating
• New unit with external regulator type
• Twin leg alternator mount
• Part number DXA406
• Pin code ER1
• Suits Denso applications

Specifications

• Brand: OEX
• Product type: Alternator
• Part No.: DXA406
• Voltage: 12V
• Power rating: 55A
• Description current: 50A
• Regulator type: External
• Alternator mount: Twin Leg

Known application families

• Daihatsu Delta
• Holden Gemini
• Holden Jackaroo
• Holden Rodeo
• Toyota 4 Runner
• Toyota Celica
• Toyota Coaster
• Toyota Dyna

Application and Buying Notes

For a correct alternator match, start with the part number DXA406 and confirm it is a Denso style replacement for the vehicle or equipment already fitted. The key fitment checkpoints here are the external regulator type, twin leg mount, 76mm inside mounting legs, 171mm mount centre to centre, and the 70mm A-section pulley.

The listed application families include Daihatsu, Holden, Toyota, and Yanmar references, with sample applications showing models such as Holden Gemini, Holden Jackaroo, Toyota 4 Runner, and Yanmar F17D. That said, alternator fitment can vary within the same model range, so the existing unit should be checked against the measurements and mounting layout before purchase.

This unit is described as 12V with a 55A power rating and a 50A description. If your replacement must match a specific charging system setup, confirm the electrical specification, regulator arrangement, and connector or pin code ER1 against the unit being removed. That is especially important on older vehicles and industrial equipment where changes may have been made over time.

The OEX alternator is new, weighs 4.8kg, and carries a 3yr Passenger / 1yr Commercial warranty. Warranty terms can be useful for peace of mind, but they do not replace a physical comparison of the old alternator, pulley offset, mounting ears, and adjustment slot 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 DXA406 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 76mm, Pivot Hole Diameter 10, Pulley Outside Diameter 70mm, Regulator Type External, Voltage 12, Mount Cnt to Cnt 171mm, Weight 4.8kg.

Additional published details for cross-checking include Product Group 1 ROTATING ELECTRICAL, Part No. DXA406, Brand OEX, Description OEX Alternator 12V 50A Denso Style, Adjusting Hole Diameter M8x1.25, Pin Code ER1, Power Rating (Amp) 55, Pulley Section A, Suits Unit Make Denso, Alternator Mount Twin Leg.

OEX Alternator 12V 50A Denso Style. Part number DXA406 should be checked first. Listed voltage is 12. Listed output rating is 55. These details form the core reference points used by parts interpreters when confirming the correct replacement.

Mount style is Twin Leg. Regulator type is External. Pulley configuration is A. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number DXA406, 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 55 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Compatibility note: Please confirm fitment with part number DXA406, regulator type, mount style, and the listed dimensions before ordering. The vehicle or equipment application should be checked against the existing alternator and charging system layout rather than relying on model name alone.

FAQ

What is the part number for this OEX alternator?

The part number is DXA406. For this listing, part number DXA406 is the main reference point. Listed voltage is 12. Listed output rating is 55. Published fitment references include DAIHATSU DELTA, DAIHATSU DELTA 1983, DAIHATSU DELTA 1984. These details should still be checked against the original unit before ordering.

Is this alternator new or remanufactured?

It is listed as new. For this listing, part number DXA406 is the main reference point. Listed voltage is 12. Listed output rating is 55. Published fitment references include DAIHATSU DELTA, DAIHATSU DELTA 1983, DAIHATSU DELTA 1984. These details should still be checked against the original unit before ordering.

What voltage is this alternator?

It is a 12V alternator. For this listing, part number DXA406 is the main reference point. Listed voltage is 12. Listed output rating is 55. Published fitment references include DAIHATSU DELTA, DAIHATSU DELTA 1983, DAIHATSU DELTA 1984. These details should still be checked against the original unit before ordering.

What regulator type does it use?

It uses an external regulator type. For this listing, part number DXA406 is the main reference point. Listed voltage is 12. Listed output rating is 55. Published fitment references include DAIHATSU DELTA, DAIHATSU DELTA 1983, DAIHATSU DELTA 1984. These details should still be checked against the original unit before ordering.

What mount style does it have?

It has a twin leg alternator mount. For this listing, part number DXA406 is the main reference point. Listed voltage is 12. Listed output rating is 55. Published fitment references include DAIHATSU DELTA, DAIHATSU DELTA 1983, DAIHATSU DELTA 1984. These details should still be checked against the original unit before ordering.

What warranty is listed?

The listed warranty is 3yr Passenger and 1yr Commercial. For this listing, part number DXA406 is the main reference point. Listed voltage is 12. Listed output rating is 55. Published fitment references include DAIHATSU DELTA, DAIHATSU DELTA 1983, DAIHATSU DELTA 1984. These details should still be checked against the original unit before ordering.