OEX Alternator 12V 75A Denso Style DXA447

The OEX Alternator DXA447 is a 12V, 75A unit in Denso style, supplied new and built with an internal regulator. It is listed with a 4 groove pulley, a pulley outside diameter of 49mm, and a single leg alternator mount, so matching the mounting layout and pulley arrangement is an important check before purchase.

Key mounting measurements on this alternator include a 58mm mount leg thickness, a 165mm mount centre to centre dimension, a 10mm pivot hole diameter, and an M8 x 1.25 adjusting hole. These dimensions are the practical details that matter when confirming whether the unit will suit the vehicle or machine it is being fitted to.

OEX lists this alternator as suitable for Denso applications, and the fitment information provided includes Holden, Isuzu, and John Deere applications. Because alternators are commonly swapped across different equipment with similar electrical output but different housings and brackets, the part number DXA447 and the physical measurements should be checked together rather than relying on output alone.

Key Features

• 12V alternator with 75A output
• Denso style unit
• Internal regulator
• 4 groove pulley
• Single leg alternator mount
• New unit

Specifications

• Voltage: 12V
• Power rating: 75A
• Brand: OEX
• Part No.: DXA447
• Suits unit make: Denso
• Pulley outside diameter: 49mm
• Pulley section: 4 groove
• Alternator mount: Single leg

Known fitment references supplied

• Holden Frontera
• Holden Jackaroo / Monterey
• Holden Rodeo
• Isuzu Vehicross
• John Deere Series 7000
• John Deere Series 7010

Application and Buying Notes

Before ordering, confirm the alternator bracket style, pulley belt layout, and connector arrangement on the vehicle or machine you are servicing. This unit is a 12V, 75A Denso style alternator with a 4 groove pulley and internal regulator, so those details need to line up with the original application as well as the mounting points.

The most useful fit checks here are the DXA447 part number, the single leg mount, the 58mm mount leg thickness, the 165mm mount centre to centre dimension, and the 10mm pivot hole diameter. If any of those measurements differ from the existing alternator or mounting arrangement, the part may not interchange cleanly even if the electrical rating appears similar.

For belt alignment, compare the 49mm pulley outside diameter and the 4 groove pulley section with the unit being replaced. Alternators can look similar in photographs but still differ in pulley offset, groove count, or mounting leg dimensions, which can affect installation and belt tracking.

The listed fitment references include Holden, Isuzu, and John Deere applications, but those references should be treated as a guide only. Use the vehicle, engine, or equipment details already on hand, together with the physical measurements and part number, to confirm suitability before purchase.

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 DXA447 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 49mm, Regulator Type Internal, Voltage 12, Mount Cnt to Cnt 165mm, Weight 5.1kg.

Additional published details for cross-checking include Product Group 1 ROTATING ELECTRICAL, Part No. DXA447, Brand OEX, Description OEX Alternator 12V 75A Denso Style, Adjusting Hole Diameter M8 x 1.25, Pin Code IR7, Power Rating (Amp) 75, Pulley Section 4 Groove, Suits Unit Make Denso, Alternator Mount Single Leg.

OEX Alternator 12V 75A Denso Style. Part number DXA447 should be checked first. Listed voltage is 12. Listed output rating is 75. 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 4 Groove. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number DXA447, 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 75 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Compatibility note: Confirm fitment using part number DXA447, the Denso style application, and the listed dimensions and mount details before ordering. The fitment references supplied are a guide only and should be checked against the unit being replaced.

FAQ

What type of alternator is this?

It is an OEX alternator, 12V and 75A, described as Denso style with an internal regulator. For this listing, part number DXA447 is the main reference point. Listed voltage is 12. Listed output rating is 75. Published fitment references include HOLDEN FRONTERA, HOLDEN FRONTERA 1999, HOLDEN FRONTERA 2000. 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 DXA447 is the main reference point. Listed voltage is 12. Listed output rating is 75. Published fitment references include HOLDEN FRONTERA, HOLDEN FRONTERA 1999, HOLDEN FRONTERA 2000. These details should still be checked against the original unit before ordering.

What part number should I match?

The part number is DXA447. For this listing, part number DXA447 is the main reference point. Listed voltage is 12. Listed output rating is 75. Published fitment references include HOLDEN FRONTERA, HOLDEN FRONTERA 1999, HOLDEN FRONTERA 2000. These details should still be checked against the original unit before ordering.

What pulley details are listed?

The alternator has a 4 groove pulley and the pulley outside diameter is 49mm. For this listing, part number DXA447 is the main reference point. Listed voltage is 12. Listed output rating is 75. Published fitment references include HOLDEN FRONTERA, HOLDEN FRONTERA 1999, HOLDEN FRONTERA 2000. These details should still be checked against the original unit before ordering.

What mounting measurements are provided?

The listed mounting details are a single leg alternator mount, 58mm mount leg thickness, 165mm mount centre to centre, a 10mm pivot hole diameter, and an M8 x 1.25 adjusting hole. For this listing, part number DXA447 is the main reference point. Listed voltage is 12. Listed output rating is 75. Published fitment references include HOLDEN FRONTERA, HOLDEN FRONTERA 1999, HOLDEN FRONTERA 2000. These details should still be checked against the original unit before ordering.

What warranty is listed?

The warranty listed is 3yr Passenger and 1yr Commercial. For this listing, part number DXA447 is the main reference point. Listed voltage is 12. Listed output rating is 75. Published fitment references include HOLDEN FRONTERA, HOLDEN FRONTERA 1999, HOLDEN FRONTERA 2000. These details should still be checked against the original unit before ordering.