ARCO Marine Zeus A225S Vortec Alternator w/Terminal Block

The Zeus A225S Vortec Alternator with Terminal Block is the ultimate power solution for marine and boating applications. Designed to deliver the highest power output in its class, this alternator ensures your vessel's electrical systems run smoothly and efficiently, even under demanding conditions.

Key Features

• High Energy Production: Engineered to deliver maximum power, ensuring your marine systems operate reliably.
• Versatile Applications: Ideal for marine, RV, military, and commercial uses, providing broad compatibility.
• Fast Charging: Capable of rapidly charging large battery banks, keeping your onboard power systems ready.
• Superior Cooling: Operates 8-20% cooler than standard alternators thanks to advanced heat shedding coatings, an exterior rectifier, and dual cooling fans, enhancing performance and longevity.
• OEM Quality: Built with Original Equipment Manufacturer components for unmatched reliability and durability.
• Optimized for Idle: Maintains high performance even at low engine speeds, reducing the need for auxiliary generators.
• Advanced Coatings: Features E-Coat or Cerakote finishes that absorb less heat, allowing for higher amperage output over sustained periods.
• Smart Regulation: Pair with the ARCO Zeus Bluetooth alternator regulator for maximum performance and efficient lithium battery charging.
• Certification: SAE J1171 Certified, ensuring compliance with industry standards.
• Made in the USA: Proudly manufactured domestically, supporting quality and local industry.

Technical Specifications

Specification	Details
Voltage	12V
Field Type	P
Rotor Poles	16
Stator Size	130mm
Frame Size	Small
Weight	12lbs / 6.7kg
Regulation	External Only
Output Voltage	14.1V (default)
Finish	Black Cerakote or E-coating
Cut-In RPM	1,061 Alternator RPM
Maximum Alt RPM	19,000
Battery Post	M8 Thread Post, Side Mount
Standard Pulley	49K6 (6-groove, 49mm)
Pulley Mount	17mm diameter shaft, 25mm long, threaded M17 x 1.5
Pulley Hardware	M17 x 1.5 x 24mm nut, with 18mm ID x 29mm OD washer (Included)
Diodes	6 positive, 6 negative, 50A 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

Mounting Applications

The Zeus A225S is designed to seamlessly replace Mando type alternators by utilizing Vortec/GM pad mounting feet. It is compatible with a wide range of marine engines, including:

• Mercruiser 3.0GLM
• Mercruiser 3.0GLP
• Mercruiser 4.3GXi
• Mercruiser 5.7GiL
• Mercruiser 5.7GXiL
• Volvo Penta 3.0GLM
• Volvo Penta 3.0GLP
• Volvo Penta 4.3GXi
• Volvo Penta 5.7GiL
• Volvo Penta 5.7GXiL

Why Choose the Zeus A225S Vortec Alternator?

Enhance your marine vessel's electrical system with the Zeus A225S Vortec Alternator. Its superior cooling technology, high energy output, and robust construction make it the perfect choice for demanding marine environments. Whether you're cruising at idle speeds or pushing your engine to higher RPMs, the A225S ensures consistent and reliable power, minimizing the need for additional generators and maximizing your boating experience.

Orders of physical products placed by 3 PM EST M-F typically ships the same day, if all requested items are in stock. Weekend orders will typically ship on Monday.

Shipping takes 2-7 days.

We currently ship to the Contiguous 48 States.

Life of Sailing merch is custom made for the customer after an order is placed. Total turnaround is typically 7-14 days from order to doorstep.