OEX Alternator 12V 70A Denso Style DXA478

The OEX Alternator DXA478 is a 12V, 70A unit built in Denso style for applications that require a single-leg alternator mount. It is a new alternator, not a remanufactured unit, and it uses an internal regulator for simpler installation where the application matches the listed specifications.

Key dimensions to check before ordering are the 70mm mount leg thickness, 163mm mount centre-to-centre, 10mm pivot hole diameter, M8 x 1.25 adjusting hole, 75mm pulley outside diameter, and 17mm shaft dimension. The pulley section is AA, so belt profile compatibility needs to be confirmed with the vehicle setup, not assumed.

This part is listed with part number DXA478 and suits Denso units. It is intended for buyers who need a 12V alternator rated at 70 amps and who want the reassurance of a new OEX rotating electrical component backed by the stated warranty coverage: 3 years for passenger use and 1 year for commercial use.

Key Features

• 12V alternator rated at 70A
• New unit, not remanufactured
• Internal regulator type
• Single-leg alternator mount
• Denso style, suits Denso unit applications
• Part number DXA478

Specifications

• Brand: OEX
• Product type: Alternator
• Power rating: 70 amp
• Voltage: 12V
• Unit of measure: Each
• New / remanufactured: New
• Regulator type: Internal
• Alternator mount: Single leg

Fitment guidance

• Fitment data supplied includes Toyota applications, with previewed coverage for 4 Runner, Cressida, Dyna, Dyna 150, Hiace, Hilux, Hilux Surf and Liteace.
• Sample listed applications include Toyota 4 Runner model years 1989, 1990, 1991, 1992, 1993, 1994, 1995 and 1996.
• Use the part number DXA478 and the physical dimensions to confirm the match against the existing alternator before ordering.
• Confirm the alternator mount style, pulley section, regulator arrangement and connector setup on the vehicle, especially if the unit requires a driver on the L terminal.

Application and Buying Notes

The most important checks on this alternator are the part number DXA478, the 12V system voltage, and the 70A output rating. Those three details need to line up with the vehicle’s charging system requirements before any physical comparison is made. The alternator is a Denso style unit with an internal regulator, so the existing unit’s regulator setup should be checked carefully.

Physical matching matters just as much as electrical matching. This unit uses a single-leg mount, 70mm mount leg thickness, 163mm mount centre-to-centre, 10mm pivot hole, and M8 x 1.25 adjusting hole. If any of those points differ from the removed alternator, the unit may not install correctly even if the application name looks similar.

Pulley and shaft details also need attention. The pulley outside diameter is 75mm, the pulley section is AA, and the shaft dimension is 17mm. Those details affect belt alignment and drive compatibility, so they should be matched against the existing alternator rather than guessed from the vehicle model alone.

Warranty coverage is listed as 3 years for passenger use and 1 year for commercial use, which is useful context when comparing replacement options. As with any rotating electrical part, correct installation and correct application matching are important, so it is worth checking the old unit side by side with the listed measurements and connection details.

Because Toyota applications are shown in the fitment information, buyers should still verify the exact engine and alternator type fitted to the vehicle. The fitment list is broad enough to include several Toyota models, but the practical check remains the same: confirm the existing alternator matches DXA478 in mounting, pulley, regulator, and connection details.

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 DXA478 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 70mm, Pivot Hole Diameter 10, Pulley Outside Diameter 75mm, Regulator Type Internal, Voltage 12, Alternator Mount Single Leg, New / Reman. New.

Additional published details for cross-checking include Weight 6.2kg, Product Group 1 ROTATING ELECTRICAL, Part No. DXA478, Brand OEX, Description OEX Alternator 12V 70A Denso Style, Adjusting Hole Diameter M8 x 1.25, Pin Code IR11, Power Rating (Amp) 70, Pulley Section AA, Suits Unit Make Denso.

OEX Alternator 12V 70A Denso Style. Part number DXA478 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 AA. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number DXA478, 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.

Compatibility note: Please confirm fitment using part number DXA478, the Denso style application, the internal regulator setup, and the listed mounting and pulley dimensions before ordering.

FAQ

Is this alternator new or remanufactured?

This OEX alternator is listed as new, not remanufactured.

What is the voltage and output rating?

It is a 12V alternator with a 70A power rating.

What regulator type does it use?

It uses an internal regulator.

What mounting style does it have?

It is a single-leg alternator mount with a 70mm mount leg thickness and 163mm mount centre-to-centre.

Does it suit Denso units?

Yes. It is listed as suiting Denso unit applications and is described as Denso style.

What should I check before buying?

Confirm the part number DXA478, 12V system voltage, 70A output, single-leg mount, pulley section AA, 75mm pulley diameter, and the connector or L-terminal arrangement against the existing unit.