OEX Alternator 12V 120A Bosch Style – BXA042
The OEX Alternator BXA042 is a reliable 12V, 120-amp Bosch-style alternator designed as a direct replacement unit for compatible passenger, SUV, and light commercial applications. Built to handle modern electrical demands, it delivers stable and consistent charging performance for vehicles operating with standard to moderate accessory loads.
Manufactured to OE-quality standards using ISO-certified processes and premium components, this alternator ensures long service life, accurate voltage regulation, and precise fitment for Bosch-style charging systems.
Key Features
- 120A high-output capacity – suitable for modern vehicle electrical systems
- Bosch-style OE replacement design – direct fitment application
- Internal regulator (Pin Code IR110) – stable and precise voltage control
- Twin leg mounting configuration – secure OE-style installation
- 4 groove pulley system – reliable belt drive performance
- Brand new unit – not remanufactured
- 3-year passenger / 1-year commercial warranty
Specifications
- Voltage: 12V
- Output: 120 Amp
- Part Number: BXA042
- Pulley Section: 4 Groove
- Regulator Type: Internal
- Mount Type: Twin Leg
- Mount Centre to Centre: 184mm
- Inside Mounting Legs: 32mm
- Pivot Hole Diameter: M10 x 1.25 / 10mm
- Adjusting Hole Diameter: M8 x 1.25
- Pin Code: IR110
- Suits Unit Make: Bosch Style
- Unit Type: New
- Weight: Approx. 7.5kg
Vehicle Applications
Commonly fitted to:
- Holden Commodore (selected models)
- Holden Calais (selected models)
- HSV range including ClubSport, Maloo, Senator (selected applications)
- Passenger vehicles using Bosch-style 120A charging systems
✔ Application-specific unit – always confirm by part number BXA042 before purchase
✔ Fitment must be verified using mounting layout, pulley configuration, and electrical connector type
(Bosch-style alternators can appear visually identical but differ in mounting dimensions and pulley design, so OE matching is essential before installation.)
Performance & Reliability
The BXA042 alternator is engineered to provide stable charging output under varying electrical loads. It supports essential vehicle systems such as ignition, lighting, HVAC, and onboard electronics, ensuring consistent voltage regulation and dependable operation.
Its OE-style construction ensures accurate fitment, reduced installation issues, and long-term durability across passenger and light commercial applications.
Why Choose OEX?
- Trusted aftermarket brand across Australia & New Zealand
- Designed for OE-style fitment and reliable performance
- Built under ISO 9001 certified manufacturing standards
- Proven durability in automotive, fleet, and light commercial use
- Strong nationwide warranty support
