OEX Alternator 12V 80A Denso Style DXA4159

The OEX Alternator DXA4159 is a new 12V, 80A alternator in a Denso style configuration, supplied as a twin leg mount unit. It uses an internal regulator, a 6 groove pulley, and a 55mm pulley outside diameter, which are important checkpoints when matching the unit to the existing setup.

This alternator is listed with an 11mm pivot hole diameter, M8x1.25 adjusting hole diameter, and 155mm mount centre to centre. The inside mounting legs measure 39mm, so the physical mounting arrangement should be checked carefully against the vehicle’s original alternator before purchase.

OEX states that its products are sourced from market leading original equipment manufacturers and aftermarket suppliers, with factories that are ISO9001 certified. For buyers, the practical value is straightforward: the key identifiers here are 12V, 80A, Denso style, part number DXA4159, and the Denso unit make reference.

As a rotating electrical component, alternator match-up is not just about voltage and output. Mount style, pulley groove count, regulator type, and bracket dimensions all matter, and this unit’s measured details should be compared against the removed part to help avoid an incorrect order.

Key Features

• New alternator, not remanufactured
• 12V system voltage
• 80A power rating
• Denso style unit
• Internal regulator
• 6 groove pulley

Specifications

• Brand: OEX
• Product type: Alternator
• Part No.: DXA4159
• Suits unit make: Denso
• Voltage: 12V
• Power rating: 80A
• New / reman.: New
• Regulator type: Internal

Application and Buying Notes

This alternator is identified as a Denso style unit with part number DXA4159, so the safest way to confirm suitability is to compare the removed alternator’s mount layout, pulley arrangement, and regulator type with the listed details. The critical dimensions supplied are the twin leg mount, 39mm inside mounting legs, 155mm mount centre to centre, 11mm pivot hole diameter, and M8x1.25 adjusting hole diameter.

The 12V, 80A specification tells you the electrical output and system voltage, but those figures alone are not enough to confirm fitment. A 6 groove pulley with 55mm outside diameter must also line up with the belt system already on the vehicle, otherwise belt alignment and drive compatibility can become an issue.

Because alternators are fitted across a wide range of applications, the unit make reference to Denso is a useful guide, but it should not be treated as a blanket fitment statement. Check the physical mounting ears, pulley section, and overall layout against the old unit, and use DXA4159 as the primary identifier when cross-checking.

The unit is new and carries a 3 year passenger / 1 year commercial warranty, which is helpful for buying confidence, but warranty does not replace fitment verification. If the existing alternator has a different pulley section, different leg spacing, or a different regulator arrangement, it is best to stop and confirm before installation.

For workshop or home fitting, it is sensible to keep the original alternator on hand until the replacement has been compared side by side. The weight is listed at 4.34kg, which can also help when checking whether the replacement unit matches the general size and construction of the original part.

If you are matching by part number, DXA4159 is the main reference supplied here. If you are matching by application, the safest approach is to verify the Denso style form, the twin leg mount, and the measured dimensions together rather than relying on any single specification on its own.

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 DXA4159 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 39mm, Pivot Hole Diameter 11, Pulley Outside Diameter 55mm, Regulator Type Internal, Voltage 12, Mount Cnt to Cnt 155mm, Weight 4.34kg.

Additional published details for cross-checking include Product Group 1 ROTATING ELECTRICAL, Part No. DXA4159, Brand OEX, Description OEX Alternator 12V 80A Denso Style, Adjusting Hole Diameter M8x1.25, Pin Code IR50, Power Rating (Amp) 80, Pulley Section 6 Groove, Suits Unit Make Denso, Alternator Mount Twin Leg.

OEX Alternator 12V 80A Denso Style. Part number DXA4159 should be checked first. Listed voltage is 12. Listed output rating is 80. 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 6 Groove. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number DXA4159, 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 80 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Compatibility note: Please confirm fitment by comparing part number DXA4159, Denso style application details, twin leg mounting, pulley specification, and all listed measurements against the vehicle’s original alternator before ordering.

FAQ

Is this alternator new or remanufactured?

This OEX alternator is listed as new.

What is the voltage and output rating?

It is a 12V alternator with an 80A power rating.

What type of regulator does it use?

It uses an internal regulator.

What pulley setup does it have?

It has a 6 groove pulley with a 55mm outside diameter.

What mounting details are listed for fitment checking?

The listed mounting details are twin leg mount, 39mm inside mounting legs, 155mm mount centre to centre, 11mm pivot hole diameter, and M8x1.25 adjusting hole diameter.

What warranty is supplied?

The warranty listed is 3 years for passenger use and 1 year for commercial use.