Next Day Delivery Zeus A225s 3.15 Alternator with Isolated Ground Terminal Block

ARCO Zeus 12 volt/225 amp high output alternator with 3.15 inch saddle mount. Requires an external regular, like the ARCO Zeus Bluetooth battery regulator. Includes a 49mm K6 pulley.

• High-Efficiency Power Generation – Designed for maximum energy output across marine, RV, military, and commercial applications.
• Fast Battery Charging – Rapidly replenishes large battery banks.
• Cooler Operation for Enhanced Performance – Runs 8-20% cooler than standard alternators with:
• Heat-shedding coatings
• External rectifier placement
• Dual cooling fans
• OEM-grade components
• Optimized for Idle Performance – Delivers reliable power even at low RPMs.
• Generator Alternative – Generates additional power through your engine, reducing the need for a separate generator.
• Advanced E-Coat/Cerakote Finish – Minimizes heat absorption, keeping the A225S cooler for sustained amperage output.
• Pair with ARCO Zeus Bluetooth Alternator Regulator – Maximizes performance and supports lithium battery charging.
• Certified & Made in the USA – SAE J1171 Certified.
• Voltage: 12 volts
• Field Type: P
• Rotor Poles: 16
• Stator Size: 130 mm
• Frame Size: Small
• Weight: 12 pounds (5.4 kg)
• Regulation: Internal/External (Internally regulated with adapter for external regulation)
• Output Voltage: 14.1 volts (Default)
• Finish: Black Cerakote or E-coating
• Cut-In RPM: 1,061 Alternator RPM
• Max Alternator RPM: 19,000
• Battery Post: M8 Thread Post, Side Mount
• Standard Pulley: 49K6 (6-groove, 49 mm)
• Pulley Mount: 17 mm diameter shaft, 25 mm length, M17 x 1.5 threading
• Pulley Hardware: M17 x 1.5 x 24 mm nut, w/ 18 mm ID x 29 mm OD washer (Included)
• Diodes: 6 positive, 6 negative, 50 amp rated, avalanche
• Max Output (Cold, 9,000 RPM): 254 amps
• Sustained Cruising Output (Hot, 6,000 RPM): 187 amps
• Sustained Idle Output (Hot, 3,000 RPM): 157 amps
• Max Continuous Operating Temperature: 110°C / 230°F