OEX Alternator 12V 90A Denso Style DXA4017

The OEX Alternator DXA4017 is a new 12V, 90A rotating electrical unit built in a Denso style and sold as a single alternator each. It uses an internal regulator, a 5 groove pulley with 65mm outside diameter, and is listed with a 153mm mount centre-to-centre measurement.

For mounting checks, this unit is specified with a single leg alternator mount, 56mm mount leg thickness, a 10mm pivot hole diameter and an 8mm adjusting hole diameter. Those dimensions matter when comparing the alternator against the vehicle’s existing brackets and hardware, especially where the original unit has already been removed for replacement.

OEX lists this alternator with part number DXA4017 and a pin code of IR2. It is supplied as a new unit and carries a 3 year passenger / 1 year commercial warranty, which is useful to confirm before ordering if the vehicle is used in a private or business application.

Key Features

• 12V alternator, 90A output
• Denso style unit
• Internal regulator
• Single leg alternator mount
• 5 groove pulley
• New unit

Specifications

• Voltage: 12V
• Power rating: 90A
• Pulley outside diameter: 65mm
• Pulley section: 5 groove
• Mount leg thickness: 56mm
• Pivot hole diameter: 10mm
• Adjusting hole diameter: 8mm
• Mount centre to centre: 153mm

Fitment guidance

• Fitment data provided references Honda Prelude applications, including 1991, 1992, 1993, 1994, 1995 and 1996 models.
• Fitment should still be checked against the vehicle’s original alternator, bracket style, pulley setup and the listed DXA4017 / IR2 identifiers before purchase.

Application and Buying Notes

When matching this alternator, start with the part number DXA4017 and the Denso style reference. The most important physical checks are the single leg mount, 153mm mount centre-to-centre, 56mm mount leg thickness, 10mm pivot hole and 8mm adjusting hole, as these are the details that determine whether the unit will bolt up correctly.

The pulley specification is also important. This alternator has a 65mm outside diameter pulley with a 5 groove section, so the belt style and pulley alignment should be compared with the original unit on the vehicle. A mismatch here can create belt noise, poor charging, or installation problems even if the alternator looks similar at first glance.

Because this is a 12V, 90A alternator with an internal regulator, it should be matched to the vehicle’s electrical system requirements and the original charging setup. If the existing alternator is being replaced after removal, it is best to compare the old unit directly, including the mount arrangement, connector details tied to the listed pin code IR2, and any identifying marks before fitting.

The unit is new and weighs 5.58kg, which can be helpful when handling or comparing replacements. The warranty is listed as 3 years for passenger use and 1 year for commercial use, so it is worth confirming the intended vehicle use before ordering to make sure the coverage aligns with the application.

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 DXA4017 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, Mount Leg Thickness 56mm, Pivot Hole Diameter 10, Pulley Outside Diameter 65mm, Regulator Type Internal, Voltage 12, Mount Cnt to Cnt 153mm, Weight 5.58kg.

Additional published details for cross-checking include Product Group 1 ROTATING ELECTRICAL, Part No. DXA4017, Brand OEX, Description OEX Alternator 12V 90A Denso Style, Adjusting Hole Diameter 8, Pin Code IR2, Power Rating (Amp) 90, Pulley Section 5 Groove, Suits Unit Make Denso, Alternator Mount Single Leg.

OEX Alternator 12V 90A Denso Style. Part number DXA4017 should be checked first. Listed voltage is 12. Listed output rating is 90. These details form the core reference points used by parts interpreters when confirming the correct replacement.

Mount style is Single Leg. Regulator type is Internal. Pulley configuration is 5 Groove. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number DXA4017, 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 90 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Compatibility note: Please confirm fitment by checking the vehicle application, the original alternator, and the part number DXA4017 against the listed measurements and Denso style details before ordering.

FAQ

What is the part number for this alternator?

The part number listed is DXA4017. For this listing, part number DXA4017 is the main reference point. Listed voltage is 12. Listed output rating is 90. Published fitment references include HONDA PRELUDE, HONDA PRELUDE 1991, HONDA PRELUDE 1992. These details should still be checked against the original unit before ordering.

Is this alternator new or remanufactured?

It is listed as a new alternator. For this listing, part number DXA4017 is the main reference point. Listed voltage is 12. Listed output rating is 90. Published fitment references include HONDA PRELUDE, HONDA PRELUDE 1991, HONDA PRELUDE 1992. These details should still be checked against the original unit before ordering.

What charging output does it have?

It is rated at 90A and operates on 12V. For this listing, part number DXA4017 is the main reference point. Listed voltage is 12. Listed output rating is 90. Published fitment references include HONDA PRELUDE, HONDA PRELUDE 1991, HONDA PRELUDE 1992. 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 DXA4017 is the main reference point. Listed voltage is 12. Listed output rating is 90. Published fitment references include HONDA PRELUDE, HONDA PRELUDE 1991, HONDA PRELUDE 1992. These details should still be checked against the original unit before ordering.

What pulley setup does it have?

It has a 5 groove pulley with a 65mm outside diameter. For this listing, part number DXA4017 is the main reference point. Listed voltage is 12. Listed output rating is 90. Published fitment references include HONDA PRELUDE, HONDA PRELUDE 1991, HONDA PRELUDE 1992. These details should still be checked against the original unit before ordering.

What warranty is listed?

The warranty is listed as 3 years for passenger use and 1 year for commercial use. For this listing, part number DXA4017 is the main reference point. Listed voltage is 12. Listed output rating is 90. Published fitment references include HONDA PRELUDE, HONDA PRELUDE 1991, HONDA PRELUDE 1992. These details should still be checked against the original unit before ordering.