OEX Alternator 12V 55A Denso Style DXA4005

The OEX Alternator DXA4005 is a 12V, 55A unit built in a Denso style format and sold new, not remanufactured. It suits Denso applications and is set up with an internal regulator, twin leg alternator mount, and a 70mm pulley with A section belt profile.

Key mounting and sizing details matter on alternators, and this unit is listed with 75mm inside mounting legs, 175mm mount centre-to-centre, 8mm pivot hole diameter, 8mm adjusting hole diameter, and a 15mm shaft dimension. Those measurements are the sort of points that need to match the vehicle or machine before fitting.

OEX backs this alternator with a 3 year passenger warranty and 1 year commercial warranty. It is an each unit with a listed weight of 4.5kg, which gives a useful reference when comparing against the existing part in the vehicle or equipment.

A note is supplied for an adaptor to suit HXK-17, HXK-22 and HXK-30. If your application uses one of those adaptor setups, that detail should be checked carefully against the current installation before ordering.

Key Features

• 12V alternator with 55A output
• Denso style unit
• Internal regulator
• Twin leg alternator mount
• New unit, not remanufactured
• 70mm pulley with A section belt profile

Specifications

• Brand: OEX
• Part No.: DXA4005
• Product type: Alternator
• Voltage: 12V
• Power rating: 55A
• Unit of measure: Each
• Suits unit make: Denso
• Regulator type: Internal

Compatibility check before ordering

• Suits Denso units
• Adaptor to suit HXK-17, HXK-22, HXK-30

Application and Buying Notes

Alternators need to match more than just voltage, and this unit is listed as 12V with a 55A output, an internal regulator, and a twin leg mount. The important cross-checks are the 75mm inside mounting legs, 175mm mount centre-to-centre, 8mm pivot hole, 8mm adjusting hole, and 70mm pulley, because those dimensions have to suit the existing setup.

The pulley detail is also important. This alternator uses an A section pulley with a 70mm outside diameter, so belt profile and pulley size should be confirmed against the original unit rather than assumed from the vehicle model alone. The listed shaft dimension is 15mm, which is another point worth checking against the removed alternator.

Because the note calls out an adaptor to suit HXK-17, HXK-22 and HXK-30, the current installation arrangement needs to be inspected carefully. If the vehicle or machine has been adapted previously, matching the part number DXA4005 and the mounting dimensions is the safest way to avoid an incorrect order.

The alternator is supplied new and weighs 4.5kg. If you are comparing it with the removed unit, use the physical dimensions, regulator type, and mount style as the main reference points. That approach is more reliable than relying on the broad description alone, especially when working on equipment where multiple alternator variants may exist.

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 DXA4005 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 75mm, Pivot Hole Diameter 8, Pulley Outside Diameter 70mm, Regulator Type Internal, Voltage 12, Alternator Mount Twin Leg, New / Reman. New.

Additional published details for cross-checking include Weight 4.5kg, Product Group 1 ROTATING ELECTRICAL, Part No. DXA4005, Brand OEX, Description OEX Alternator 12V 55A Denso Style, Adjusting Hole Diameter 8, Pin Code IR74, Power Rating (Amp) 55, Pulley Section A, Suits Unit Make Denso.

OEX Alternator 12V 55A Denso Style. Part number DXA4005 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 Internal. 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 DXA4005, 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: Confirm fitment by matching part number DXA4005, Denso application, 12V 55A output, twin leg mount, and the listed mounting and pulley dimensions before purchase.

FAQ

What is the part number for this alternator?

The part number listed is DXA4005. For this listing, part number DXA4005 is the main reference point. Listed voltage is 12. Listed output rating is 55. Published fitment references include CATERPILLAR 216, CATERPILLAR 216 1998, CATERPILLAR 216 1999. 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 DXA4005 is the main reference point. Listed voltage is 12. Listed output rating is 55. Published fitment references include CATERPILLAR 216, CATERPILLAR 216 1998, CATERPILLAR 216 1999. These details should still be checked against the original unit before ordering.

What voltage and output does it have?

It is a 12V alternator with a 55A power rating. For this listing, part number DXA4005 is the main reference point. Listed voltage is 12. Listed output rating is 55. Published fitment references include CATERPILLAR 216, CATERPILLAR 216 1998, CATERPILLAR 216 1999. These details should still be checked against the original unit before ordering.

What regulator type does it use?

It uses an internal regulator. For this listing, part number DXA4005 is the main reference point. Listed voltage is 12. Listed output rating is 55. Published fitment references include CATERPILLAR 216, CATERPILLAR 216 1998, CATERPILLAR 216 1999. These details should still be checked against the original unit before ordering.

What pulley size is listed?

The pulley outside diameter is listed as 70mm, with an A section pulley profile. For this listing, part number DXA4005 is the main reference point. Listed voltage is 12. Listed output rating is 55. Published fitment references include CATERPILLAR 216, CATERPILLAR 216 1998, CATERPILLAR 216 1999. These details should still be checked against the original unit before ordering.

Is there any adaptor information provided?

Yes. A note states adaptor to suit HXK-17, HXK-22 and HXK-30. For this listing, part number DXA4005 is the main reference point. Listed voltage is 12. Listed output rating is 55. Published fitment references include CATERPILLAR 216, CATERPILLAR 216 1998, CATERPILLAR 216 1999. These details should still be checked against the original unit before ordering.