THE HIGHEST POWER OUTPUT ALTERNATOR IN ITS SIZE/CLASS

• • ARCO outperforms competitor's high amp alternators in real world testing. View test results here.
• • Engineered for High Energy Production.
• • Suitable for Marine, RV, Military, and Commercial applications.
• • Rapidly charges large battery banks.
• • Coolest operating temperatures for increased performance. Runs 8 - 20% cooler than incumbent alternators due to:
    - Heat shedding coatings
    - Rectifier located on housing exterior
    - Dual cooling fans
    - OEM Components
• • Optimized for performance at idle speeds.
• • Unleash peak performance with E-Coat/Cerakote. ARCOs advanced coating absorbs less heat, keeping the A225S cooler. This translates to more amperage for sustained periods.
• • For maximum performance or lithium battery charging, use an ARCO Zeus Bluetooth alternator regulator.
• • SAE J1171 Certified.
• • Proudly made in the U.S.A.

ARCO has been building high-quality OEM replacement alternators and starters for years. During development of these new high-output alternators, ARCO discovered a gap between published power curves and real-world performance. This was likely due to manufacturers testing under ideal, cooler conditions to achieve higher output figures. To ensure their alternators deliver top performance in everyday use, ARCO implemented rigorous internal testing to evaluate high-performing components under conditions that replicate real-world scenarios.

Specifications:

A little bit about regulators: ARCO Zeus alternators are available with or without an internal regulator, and all models will accept an external regulator. If an internal regulator is installed, switching to or from an external one is accomplished by simply moving a wire.

Applications:

ARCO Zeus alternators come in many frame, regulator, and pulley combinations :