OEX Alternator 12V 100A Denso Style DXA497

The OEX Alternator DXA497 is a 12V, 100A unit built in Denso style and supplied new, not remanufactured. It uses an internal regulator, a 6 groove pulley with 60mm outside diameter, and a single leg alternator mount, so it is important to compare the mounting arrangement and pulley style against the original unit before ordering.

Key mounting measurements to check are the 157mm centre-to-centre mount spacing, 58mm mount leg thickness, 10mm pivot hole diameter, and 10mm adjusting hole diameter. These dimensions matter just as much as the electrical rating when matching the alternator to the vehicle.

This alternator is listed for Denso applications and is supported by OEX’s stated nationwide warranty: 3 years for passenger use and 1 year for commercial use. As with any charging system part, confirm the part number DXA497 and the application details before fitting, especially if the vehicle has had previous repairs or component changes.

Key Features

• 12V alternator with 100A output
• Denso style unit
• Internal regulator
• 6 groove pulley
• Single leg alternator mount
• New unit, not remanufactured

Specifications

• Brand: OEX
• Product type: Alternator
• Part No.: DXA497
• Voltage: 12V
• Power rating: 100A
• Regulator type: Internal
• Suits unit make: Denso
• Pulley section: 6 groove

Verified fitment references

• Lexus applications are listed in the supplied fitment data, including Lexus IS and Lexus LS references.
• Toyota applications are listed in the supplied fitment data, including Toyota Aristo, Celsior, Chaser, Crown, Land Cruiser and Soarer references.
• Fitment data also includes year references within those model groups, but the exact vehicle, engine and build details must still be checked against the original alternator and part number.

Application and Buying Notes

Before buying, compare the alternator’s physical layout to the unit you are replacing. The key checkpoints here are the Denso style design, single leg mount, 157mm mount centre-to-centre, 58mm mount leg thickness, and the 10mm pivot and adjusting holes. Those details are often what determines whether the alternator will bolt on correctly.

The electrical specification is equally important. This is a 12V, 100A alternator with an internal regulator, so it should only be considered where that voltage, charging output and regulator arrangement match the vehicle’s original specification. A correct-looking pulley is not enough if the electrical configuration differs.

The pulley is a 6 groove design with a 60mm outside diameter. If the belt count or pulley diameter does not match the vehicle’s original setup, the alternator may not align correctly or may require additional parts. Check the belt path and pulley style carefully before installation.

The product is listed as new and carries OEX warranty cover of 3 years for passenger use and 1 year for commercial use. Warranty terms do not replace proper application checking, so the safest approach is to confirm the part number DXA497, the Denso style mounting arrangement, and the vehicle application before purchase.

If the vehicle has had a previous charging system repair, it is worth comparing the old alternator rather than relying on model name alone. The supplied fitment references include Lexus and Toyota application groups, but the exact match still depends on the vehicle’s original alternator specification and installation points.

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 DXA497 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 60mm, Regulator Type Internal, Voltage 12, Mount Cnt to Cnt 157mm, Weight 6.4kg.

Additional published details for cross-checking include Product Group 1 ROTATING ELECTRICAL, Part No. DXA497, Brand OEX, Description OEX Alternator 12V 100A Denso Style, Adjusting Hole Diameter 10, Pin Code IR11, Power Rating (Amp) 100, Pulley Section 6 Groove, Suits Unit Make Denso, Alternator Mount Single Leg.

OEX Alternator 12V 100A Denso Style. Part number DXA497 should be checked first. Listed voltage is 12. Listed output rating is 100. 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 6 Groove. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number DXA497, 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 100 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Compatibility note: Confirm fitment using part number DXA497, the Denso style application, and the measured mounting and pulley details before ordering. Do not rely on model name alone, as alternator fitment depends on the vehicle’s original charging system layout.

FAQ

What type of alternator is this?

It is an OEX alternator, 12V, 100A, in Denso style. It is listed as a new unit with an internal regulator.

What is the part number?

The part number is DXA497.

Does this alternator suit Denso applications?

Yes. The specifications state that it suits unit make Denso and is described as Denso style.

What mounting measurements should I check?

Check the single leg mount, 157mm mount centre-to-centre, 58mm mount leg thickness, and the 10mm pivot and adjusting hole diameters.

What pulley specification does it have?

It has a 6 groove pulley with a 60mm outside diameter.

What warranty is listed?

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