OEX Alternator 12V 80A Denso Style DXA4055

The OEX Alternator DXA4055 is a 12V, 80 amp unit built in a Denso style configuration and supplied as a new rotating electrical component. It is listed with an internal regulator, a twin leg alternator mount, and a 7 groove pulley, so it suits applications that match those physical and electrical details.

Key measurements matter with alternators, and this unit is specified with 124mm mount centre to centre, 45mm inside mounting legs, an 11mm / M10 pivot hole diameter, and an M8 adjusting hole diameter. The pulley outside diameter is 56mm, and the unit weighs 4kg.

OEX identifies this alternator as a product for Denso-type applications and backs it with a 3 year passenger / 1 year commercial warranty. It is sold individually as each, which is the normal format for replacement alternators where the original unit needs to match the vehicle’s mounting and charging arrangement.

Key Features

• 12V alternator with 80 amp output
• Denso style unit
• Internal regulator
• Twin leg alternator mount
• 7 groove pulley
• New unit, sold each

Specifications

• Brand: OEX
• Part No.: DXA4055
• Voltage: 12V
• Power rating: 80A
• Regulator type: Internal
• Alternator mount: Twin leg
• Suits unit make: Denso
• Pulley section: 7 groove

Application and Buying Notes

Before ordering, compare the physical mounting points on your existing alternator with the listed dimensions for the DXA4055. The important checkpoints here are the twin leg mount, 124mm mount centre to centre, 45mm inside mounting legs, 11mm / M10 pivot hole diameter, and M8 adjusting hole diameter. If any of those do not line up, the alternator may not install correctly even if it looks similar.

The electrical configuration also needs to match. This alternator is a 12V, 80A unit with an internal regulator, so it is intended for vehicles and equipment set up for that style of charging system. The pulley is a 7 groove design with a 56mm outside diameter, which should be checked against the existing pulley layout and belt type before purchase.

Because fitment data is not listed against specific vehicle makes or models here, the safest approach is to verify by part number, mounting style, pulley groove count, and hole spacing. Denso style alternators can vary between applications, so matching the physical details is more reliable than relying on appearance alone.

If you are replacing an old unit, compare the old alternator’s tag, mount spacing, and pulley before removing it from the vehicle. The 4kg weight and the stated mounting dimensions are useful confirmation points when cross-checking against the original unit or workshop records.

Warranty coverage is listed as 3 years for passenger use and 1 year for commercial use. That does not replace fitment checking, but it does provide a useful buying reference if the application is confirmed and the alternator is installed in line with the vehicle’s requirements.

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 DXA4055 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 45mm, Pivot Hole Diameter 11 / M10, Pulley Outside Diameter 56mm, Regulator Type Internal, Voltage 12, Mount Cnt to Cnt 124mm, Weight 4kg.

Additional published details for cross-checking include Product Group 1 ROTATING ELECTRICAL, Part No. DXA4055, Brand OEX, Description OEX Alternator 12V 80A Denso Style, Adjusting Hole Diameter M8, Pin Code IR115, Power Rating (Amp) 80, Pulley Section 7 Groove, Suits Unit Make Denso, Alternator Mount Twin Leg.

OEX Alternator 12V 80A Denso Style. Part number DXA4055 should be checked first. Listed voltage is 12. Listed output rating is 80. 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 7 Groove. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number DXA4055, 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 80 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Where no verified application list is available, the part number, mounting details, connector style, and published specifications should be used as the primary selection criteria.

In the absence of a verified fitment list, the safest approach is to compare the removed unit directly with the listed product details. That includes checking the housing style, pulley layout, regulator arrangement, and any visible identification numbers before supply is approved.

Compatibility note: Please confirm compatibility using part number DXA4055, the Denso style application, and the listed mounting and pulley measurements before ordering. If your original alternator does not match the twin leg mount, 124mm centre spacing, 7 groove pulley, or hole diameters, do not assume it will fit.

FAQ

What type of alternator is this?

It is an OEX alternator, 12V and 80A, in a Denso style configuration with an internal regulator.

What is the part number?

The listed part number is DXA4055.

Is this alternator new or remanufactured?

It is listed as new.

What mounting details should I check?

Check the twin leg mount, 124mm mount centre to centre, 45mm inside mounting legs, 11mm / M10 pivot hole diameter, and M8 adjusting hole diameter.

What pulley details are provided?

The pulley is listed as 7 groove with a 56mm outside diameter.

What warranty is listed?

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