OEX Alternator 12V 55A Denso Style DXA538

The OEX Alternator DXA538 is a 12V, 55A rotating electrical unit with an internal regulator and a 4 groove pulley. It is listed as a new alternator and is designed in a Denso style, with a twin leg alternator mount and a 55mm pulley outside diameter.

This unit carries a 3 year passenger / 1 year commercial warranty and is supplied as each. Key mounting measurements include 67mm inside mounting legs, 156mm mount centre to centre, an 8mm pivot hole diameter, and an M8x1.25 adjusting hole diameter.

The part is identified as OEX part number DXA538 and suits Denso unit make applications. Where the alternator is being replaced, matching the part number and mounting measurements is the safest way to confirm the correct unit before ordering.

Key Features

• 12V alternator rated at 55A
• Internal regulator
• 4 groove pulley
• Twin leg alternator mount
• New unit
• OEX part number DXA538

Specifications

• Brand: OEX
• Product type: Alternator
• Part No.: DXA538
• Voltage: 12V
• Power rating: 55A
• Suits unit make: Denso
• Regulator type: Internal
• Pulley outside diameter: 55mm

Confirmed fitment information

• Suzuki APV
• Suzuki Sierra
• Suzuki Vitara

Application and Buying Notes

Before ordering, compare the alternator part number DXA538 with the unit being replaced and check the mounting layout carefully. The listed measurements of 67mm inside mounting legs, 156mm mount centre to centre, an 8mm pivot hole, and an M8x1.25 adjusting hole are all important when confirming the correct replacement.

This alternator is a 12V, 55A unit with an internal regulator and a 4 groove pulley. Those details matter because voltage, output rating, pulley type, and regulator style all need to align with the vehicle’s charging system and the physical setup already in place.

The product is shown as suiting Denso unit make applications, so it is best matched by comparing the existing alternator, its mounting points, and pulley arrangement rather than relying on appearance alone. A Denso style unit can still vary in bracket shape, electrical connection, or pulley alignment between applications.

If the vehicle has been modified, has had an engine swap, or the previous alternator is not original, the safest approach is to verify the part number and all mounting dimensions before purchase. The unit weighs 3.82kg, which can also help as a general reference when comparing the replacement part to the removed alternator.

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 DXA538 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 67mm, Pivot Hole Diameter 8, Pulley Outside Diameter 55mm, Regulator Type Internal, Voltage 12, Mount Cnt to Cnt 156mm, Weight 3.82kg.

Additional published details for cross-checking include Product Group 1 ROTATING ELECTRICAL, Part No. DXA538, Brand OEX, Description OEX Alternator 12V 55A Denso Style, Adjusting Hole Diameter M8x1.25, Pin Code IR8, Power Rating (Amp) 55, Pulley Section 4 Groove, Suits Unit Make Denso, Alternator Mount Twin Leg.

OEX Alternator 12V 55A Denso Style. Part number DXA538 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 4 Groove. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number DXA538, 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 using part number DXA538, the Denso application, and the listed mounting and pulley measurements before ordering. Fitment should always be checked against the vehicle and the removed alternator, especially where the charging system has been changed or the original unit is not available for direct comparison.

FAQ

What is the part number for this alternator?

The part number is DXA538. For this listing, part number DXA538 is the main reference point. Listed voltage is 12. Listed output rating is 55. Published fitment references include SUZUKI APV, SUZUKI APV 2005, SUZUKI APV 2006. These details should still be checked against the original unit before ordering.

What voltage and output does it have?

It is a 12V alternator rated at 55A. For this listing, part number DXA538 is the main reference point. Listed voltage is 12. Listed output rating is 55. Published fitment references include SUZUKI APV, SUZUKI APV 2005, SUZUKI APV 2006. These details should still be checked against the original unit before ordering.

Does it have an internal regulator?

Yes. The regulator type is listed as internal. For this listing, part number DXA538 is the main reference point. Listed voltage is 12. Listed output rating is 55. Published fitment references include SUZUKI APV, SUZUKI APV 2005, SUZUKI APV 2006. These details should still be checked against the original unit before ordering.

What pulley does it use?

It has a 4 groove pulley with a 55mm outside diameter. For this listing, part number DXA538 is the main reference point. Listed voltage is 12. Listed output rating is 55. Published fitment references include SUZUKI APV, SUZUKI APV 2005, SUZUKI APV 2006. These details should still be checked against the original unit before ordering.

Which mounting measurements are listed?

The listed mounting details are 67mm inside mounting legs, 156mm mount centre to centre, an 8mm pivot hole diameter, and an M8x1.25 adjusting hole diameter. For this listing, part number DXA538 is the main reference point. Listed voltage is 12. Listed output rating is 55. Published fitment references include SUZUKI APV, SUZUKI APV 2005, SUZUKI APV 2006. These details should still be checked against the original unit before ordering.

What vehicles are shown in the fitment data?

The fitment data shows Suzuki APV, Suzuki Sierra, and Suzuki Vitara. For this listing, part number DXA538 is the main reference point. Listed voltage is 12. Listed output rating is 55. Published fitment references include SUZUKI APV, SUZUKI APV 2005, SUZUKI APV 2006. These details should still be checked against the original unit before ordering.