OEX Alternator 24V 80A Bosch Style BXA4020

The OEX Alternator 24V 80A Bosch Style, part number BXA4020, is a new alternator supplied as each unit and built for 24V electrical systems with an 80A power rating. It is listed with an internal regulator, an 8 groove pulley, and a Bosch suit unit make, so the physical and electrical details can be checked against the existing component before ordering.

This alternator uses a single leg mount with a 158mm mount centre to centre measurement, an 80mm mount leg thickness, a 11.5mm pivot hole diameter, and a 12mm adjusting hole diameter. The pulley outside diameter is 75mm and the shaft dimension is 17mm, which are important checkpoints when matching the unit to the application and drive setup.

OEX states its products are sourced from market leading original equipment manufacturers and aftermarket suppliers, with factories ISO9001 certified for engineering, testing, and quality control procedures. The alternator is backed by a 3 year passenger / 1 year commercial warranty, which gives a clear support period to consider alongside the fitment checks.

Key Features

• 24V alternator with 80A output
• New unit, supplied each
• Internal regulator
• 8 groove pulley
• Bosch style / suits Bosch unit make
• Single leg alternator mount

Specifications

• Brand: OEX
• Part No.: BXA4020
• Product type: Alternator
• Voltage: 24V
• Power rating: 80A
• Regulator type: Internal
• Pulley section: 8 groove
• Pulley outside diameter: 75mm

Compatibility guidance

• Fitment is listed against a wide range of equipment makes and models, including Bell, Bentley, Case, DAF, Hitachi, Mercedes-Benz, Mitsubishi Fuso, New Holland, Normet and Peugeot.
• Sample applications shown include Bell B18D, Bentley Flying Spur, Case 845DHP, DAF CF 75, Hitachi AH250D, Mercedes-Benz Actros, Mitsubishi Fuso HD Euro, New Holland G140 and Peugeot Partner.
• The fitment listing also includes John Deere 350D and 400D applications in the supplied data, but you should still confirm the exact part number and physical mounting details before purchase.

Application and Buying Notes

Because this is a 24V, 80A alternator with an internal regulator, the first check is whether the vehicle or machine uses a 24V charging system and the correct Bosch-style arrangement. The mounting layout matters as much as the electrical rating here: the unit is a single leg mount with 158mm centre to centre mounting, an 80mm mount leg thickness, and 11.5mm pivot hole diameter.

The pulley details are also important. This alternator has a 75mm outside diameter pulley with an 8 groove section, so the belt type and drive alignment need to match the existing unit. The shaft dimension is 17mm, which is another practical check when comparing against the removed alternator or the machine’s charging system.

If you are replacing an existing alternator, compare the part number BXA4020, the Bosch style description, and the physical measurements before fitting. On rotating electrical parts, a close visual match is not always enough; mount type, hole diameters, pulley section, and voltage all need to line up to avoid delays or unnecessary returns.

The product weight is 8.02kg, which can be a useful reference when handling the unit or comparing it with the part already installed. If the application is on a commercial machine or work vehicle, the listed 1 year commercial warranty should be considered alongside the 24V 80A specification and the exact mounting dimensions.

For peace of mind, confirm the application using the machine details already at hand, then match the alternator part number and mounting measurements to the existing setup. The supplied fitment list is broad, but the final decision should still be based on the exact machine model, year, and the physical checks listed above.

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 BXA4020 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 80mm, Pivot Hole Diameter 11.5, Pulley Outside Diameter 75mm, Regulator Type Internal, Voltage 24, Mount Cnt to Cnt 158mm, Shaft Dimension 17.

Additional published details for cross-checking include Product Group 2 ALTERNATORS, Part No. BXA4020, Brand OEX, Description OEX Alternator 24V 80A Bosch Style, Adjusting Hole Diameter 12, Pin Code IR98, Power Rating (Amp) 80, Pulley Section 8 Groove, Suits Unit Make Bosch.

OEX Alternator 24V 80A Bosch Style. Part number BXA4020 should be checked first. Listed voltage is 24. Listed output rating is 80. 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 8 Groove. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number BXA4020, 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 with part number BXA4020 and the alternator’s 24V, 80A Bosch-style, single leg mounting details before ordering. Use the mount centre to centre measurement, hole diameters, pulley section, and voltage rating to verify the replacement against the original unit.

FAQ

Is this alternator new or remanufactured?

This unit is listed as new, not remanufactured.

What voltage does it suit?

It is a 24V alternator.

What is the current output?

The power rating is 80A.

Does it have an internal regulator?

Yes, the regulator type is internal.

What belt setup does it use?

It has an 8 groove pulley with a 75mm outside diameter.

What should I check before buying?

Confirm part number BXA4020, the 24V system requirement, single leg mounting, 158mm mount centre to centre, 11.5mm pivot hole diameter, 12mm adjusting hole diameter, and the 17mm shaft dimension against the original alternator.