OEX Alternator 24V 150A Bosch Style BXA4021WC

The OEX Alternator BXA4021WC is a 24V, 150A unit built in a Bosch style configuration and supplied as a new alternator. It is set up with an internal regulator, twin leg mount, 8 groove pulley section, and a listed part number of BXA4021WC.

This unit suits Bosch applications and carries OEM number 0124655008. Mounting and pulley dimensions are important on this alternator: the inside mounting legs measure 107mm, the mount centre to centre is 198mm, the adjusting hole diameter is M8x1.25, and the pivot hole diameter is 12mm.

A water cooled design is noted, and a 63mm pulley is also included. The standard pulley outside diameter is 72mm. For D16 engine applications, the 63mm pulley is specified, so pulley selection should be checked carefully before ordering.

Key Features

• 24V alternator with 150A output
• Bosch style unit with internal regulator
• Water cooled design
• 8 groove pulley section
• 63mm pulley included for D16 engine applications
• New unit supplied by OEX

Specifications

• Brand: OEX
• Product type: Alternator
• Part number: BXA4021WC
• OEM number: 0124655008
• Voltage: 24V
• Current output: 150A
• Mount type: Twin leg
• Inside mounting legs: 107mm

Fitment guidance

• Listed fitment references Volvo applications, including Volvo FH12 and Volvo FH16.
• Volvo FH12 application references are shown across model years 1993 through 2003 in the supplied fitment data.
• No additional vehicle or engine applications should be assumed beyond the fitment information provided here.

Application and Buying Notes

Before ordering, confirm the alternator mounting layout on the vehicle. The listed twin leg mount, 107mm inside mounting legs, and 198mm centre-to-centre measurement need to line up with the original unit or the vehicle’s mounting points.

Pulley compatibility matters on this alternator. The unit is supplied with an 8 groove pulley arrangement and includes a 63mm pulley as well as a 72mm pulley outside diameter listing. The notes specifically call out D16 engine applications for the 63mm pulley, so match the pulley requirement to the vehicle application before fitting.

Electrical capacity also needs to suit the vehicle. This alternator is rated at 24V and 150A, with an internal regulator. That makes it important to compare the system voltage and charging setup against the existing part, rather than relying on appearance alone.

If the vehicle was fitted with a Bosch style alternator and the original part number was 0124655008, that is the strongest identifier to cross-check. Measure the adjuster and pivot points as well, because the M8x1.25 adjusting hole and 12mm pivot hole are practical checks that help avoid the wrong unit being supplied or installed.

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 BXA4021WC 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 107mm, Power Rating (Amp) 150, Pulley Section 8 Groove, Suits Unit Make Bosch, Note Water Cooled 8 Groove 63mm pulley also included, Mount Cnt to Cnt 198mm, OEM Number 0124655008.

Additional published details for cross-checking include Product Group 2 ALTERNATORS, Part No. BXA4021WC, Brand OEX, Description OEX Alternator 24V 150A Bosch Style, Adjusting Hole Diameter M8x1.25, Pivot Hole Diameter 12, Pulley Outside Diameter 72mm, Regulator Type Internal, Voltage 24.

OEX Alternator 24V 150A Bosch Style. Part number BXA4021WC should be checked first. Listed voltage is 24. Listed output rating is 150. 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 8 Groove. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number BXA4021WC, 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 24 and output 150 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Available application references include VOLVO FH12, VOLVO FH12 1993, VOLVO FH12 1994, VOLVO FH12 1995. Even with application listings, final confirmation should still be based on the exact unit being replaced and the service requirements of the vehicle or machine.

Compatibility note: Confirm fitment using the part number BXA4021WC, OEM number 0124655008, and the vehicle’s mounting, pulley, and electrical details before ordering. Volvo FH12 and FH16 references are listed, but the final check should always be made against the existing alternator and application requirements.

FAQ

What type of alternator is this?

It is an OEX alternator, Bosch style, rated at 24V and 150A, and supplied as a new unit with an internal regulator.

What part numbers are listed for this alternator?

The listed part number is BXA4021WC and the OEM number is 0124655008.

What pulley arrangement does it use?

It has an 8 groove pulley section. The notes also state that a 63mm pulley is included, and the pulley outside diameter is listed as 72mm.

Is this alternator water cooled?

Yes. Water cooled is specifically noted in the product features and notes.

What vehicle fitment is provided?

The supplied fitment references Volvo applications, including Volvo FH12 and Volvo FH16. Volvo FH12 is shown across model years 1993 to 2003 in the provided fitment data.

What should I check before buying?

Check the part number BXA4021WC or OEM number 0124655008, plus the mounting dimensions, pulley setup, and 24V electrical system. The key measurements listed are 107mm inside mounting legs, 198mm mount centre to centre, M8x1.25 adjusting hole, and 12mm pivot hole.