OEX Alternator 12V 70A Denso Style DXA445

The OEX Alternator DXA445 is a new 12V, 70A unit in Denso style with an internal regulator, built for vehicles that use a Denso unit and a single-leg alternator mount. It has a 5 groove pulley with a 53mm outside diameter, along with a 58mm mount leg thickness and 160mm mount centre to centre measurement.

This alternator is supplied under the OEX brand and is identified by part number DXA445. Key physical checks include the M8x1.25 adjusting hole, 10mm pivot hole diameter, and 4.38kg weight, all of which are useful when comparing the unit against the original alternator before ordering.

OEX states its products are sourced from market leading original equipment manufacturers and aftermarket suppliers, and made in ISO9001 certified factories supporting engineering, testing and quality control procedures. This alternator is backed by a 3 year passenger or 1 year commercial warranty, which is important to match to the way the vehicle is used.

Key Features

• 12V alternator, 70A output
• Denso style unit
• Internal regulator
• Single-leg alternator mount
• 5 groove pulley
• New unit

Specifications

• Brand: OEX
• Product type: Alternator
• Voltage: 12V
• Power rating: 70A
• Part No.: DXA445
• Suits unit make: Denso
• Regulator type: Internal
• Pulley section: 5 groove

Known application information

• Holden Nova applications are listed, including 1991 to 1997 models.
• Toyota Corolla applications are listed, including 1987 to 1997 models.
• Toyota Sprinter Trueno appears in the fitment data.
• Fitment should still be checked against the original unit and vehicle application details before purchase.

Application and Buying Notes

The most useful match points for this alternator are the Denso style design, the single-leg mount, and the part number DXA445. If the vehicle uses a different mount arrangement, pulley section, or regulator setup, it should not be treated as interchangeable without checking the old unit first.

Physical measurements matter here. The 53mm 5 groove pulley, 58mm mount leg thickness, 160mm mount centre to centre spacing, 10mm pivot hole diameter, and M8x1.25 adjusting hole are all relevant when comparing against the fitted alternator. These details can be just as important as the make and model name.

The supplied application data points to Holden Nova and Toyota Corolla coverage, with Toyota Sprinter Trueno also listed. Even so, the correct approach is to confirm the vehicle’s alternator type, mounting style, pulley setup, and part number before ordering, especially where the vehicle may have been modified or fitted with a replacement charging system previously.

Warranty coverage differs for passenger and commercial use, at 3 years for passenger and 1 year for commercial. That makes the intended use case worth confirming up front, along with the vehicle’s electrical requirements and the unit’s 12V, 70A rating. Matching the application correctly helps avoid unnecessary downtime and returns.

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 DXA445 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 58mm, Pivot Hole Diameter 10, Pulley Outside Diameter 53mm, Regulator Type Internal, Voltage 12, Mount Cnt to Cnt 160mm, Weight 4.38kg.

Additional published details for cross-checking include Product Group 1 ROTATING ELECTRICAL, Part No. DXA445, Brand OEX, Description OEX Alternator 12V 70A Denso Style, Adjusting Hole Diameter M8x1.25, Pin Code IR7, Power Rating (Amp) 70, Pulley Section 5 Groove, Suits Unit Make Denso, Alternator Mount Single Leg.

OEX Alternator 12V 70A Denso Style. Part number DXA445 should be checked first. Listed voltage is 12. Listed output rating is 70. 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 DXA445, 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 70 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Compatibility note: Confirm fitment using the DXA445 part number, the Denso style specification, and the mounting and pulley measurements before buying. Vehicle application details are provided for guidance, but the original alternator and installation measurements should always be checked against the replacement unit.

FAQ

What is the part number for this alternator?

The part number is DXA445. For this listing, part number DXA445 is the main reference point. Listed voltage is 12. Listed output rating is 70. Published fitment references include HOLDEN NOVA, HOLDEN NOVA 1991, HOLDEN NOVA 1992. 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 70A power rating. For this listing, part number DXA445 is the main reference point. Listed voltage is 12. Listed output rating is 70. Published fitment references include HOLDEN NOVA, HOLDEN NOVA 1991, HOLDEN NOVA 1992. These details should still be checked against the original unit before ordering.

Does it have an internal regulator?

Yes. The regulator type is internal. For this listing, part number DXA445 is the main reference point. Listed voltage is 12. Listed output rating is 70. Published fitment references include HOLDEN NOVA, HOLDEN NOVA 1991, HOLDEN NOVA 1992. These details should still be checked against the original unit before ordering.

What type of mount does it use?

It uses a single-leg alternator mount. For this listing, part number DXA445 is the main reference point. Listed voltage is 12. Listed output rating is 70. Published fitment references include HOLDEN NOVA, HOLDEN NOVA 1991, HOLDEN NOVA 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 53mm outside diameter. For this listing, part number DXA445 is the main reference point. Listed voltage is 12. Listed output rating is 70. Published fitment references include HOLDEN NOVA, HOLDEN NOVA 1991, HOLDEN NOVA 1992. These details should still be checked against the original unit before ordering.

What warranty applies?

The warranty is 3 years for passenger use and 1 year for commercial use. For this listing, part number DXA445 is the main reference point. Listed voltage is 12. Listed output rating is 70. Published fitment references include HOLDEN NOVA, HOLDEN NOVA 1991, HOLDEN NOVA 1992. These details should still be checked against the original unit before ordering.