OEX Alternator 12V 120A Delco Style – DXA509
The OEX Alternator DXA509 is a reliable 12V, 120-amp Delco-style alternator designed as a direct replacement unit for compatible passenger, commercial, and light industrial applications. Built for stable and consistent charging performance, it ensures dependable electrical output under varying load conditions, making it suitable for both everyday use and demanding operating environments.
Manufactured to OE-quality standards using ISO-certified processes and high-grade components, this alternator delivers durability, long service life, and accurate fitment for Delco-style charging systems.
Key Features
- 120A high-output capacity – suitable for modern electrical systems
- Delco-style OE replacement design – direct fitment application
- Internal regulator (Pin Code IR157) – stable and precise voltage control
- Twin leg mounting configuration – secure OE-style installation
- 6 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: DXA509
- Pulley Section: 6 Groove
- Regulator Type: Internal
- Mount Type: Twin Leg
- Mount Centre to Centre: 184mm
- Inside Mounting Legs: 58mm
- Pivot Hole Diameter: 10mm
- Adjusting Hole Diameter: M10
- Pin Code: IR157
- Suits Unit Make: Delco Style
- Unit Type: New
Vehicle Applications
Commonly fitted to:
- Passenger vehicles (selected applications)
- Utes, SUVs, and 4WDs (selected Delco-style systems)
- Light commercial vehicles using Delco-style 120A alternators
✔ Application-specific unit – always confirm by part number DXA509 before purchase
✔ Fitment depends on mounting configuration, pulley type, and electrical connector setup
(Delco-style alternators can vary between models even with the same output rating, so correct matching is essential before installation.)
Performance & Reliability
The DXA509 alternator is engineered to provide stable and efficient charging performance for modern vehicle electrical systems. It supports essential functions such as ignition, lighting, HVAC, and onboard electronics, ensuring consistent voltage regulation under varying load conditions.
Its OE-style construction ensures accurate fitment, reduced installation issues, and long-term reliability 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 passenger, commercial, and light industrial use
- Strong nationwide warranty support
