ARCO Marine Zeus A225S 1"-2" Alternator w/Terminal Block

The Zeus A225S Alternator with Terminal Block is the ultimate power solution for marine applications, delivering unmatched performance and reliability on the water. Engineered to meet the demanding needs of boaters, this alternator ensures your marine systems stay powered efficiently, even in challenging conditions.

Unparalleled Performance for Marine Applications

The Zeus A225S stands out as the highest power output alternator in its class, making it an ideal choice for marine enthusiasts seeking dependable energy production. Whether you're outfitting a recreational vessel or a commercial boat, the A225S provides the robust power necessary to keep your systems running smoothly.

Key Features

• High Energy Production: Designed to deliver maximum amperage, ensuring your boat’s electrical systems receive consistent power.
• Versatile Applications: Perfect for marine, RV, military, and commercial use, adapting seamlessly to various power requirements.
• Rapid Battery Charging: Efficiently charges large battery banks, keeping your onboard batteries ready for extended voyages.
• Enhanced Cooling: Operates 8-20% cooler than standard alternators, thanks to advanced heat-shedding coatings, an external rectifier, and dual cooling fans, ensuring prolonged performance and reliability.
• OEM Quality Components: Utilizes original equipment manufacturer parts for durability and dependable performance.
• Optimized Idle Performance: 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 during sustained periods.
• Bluetooth Regulation: Compatible with the ARCO Zeus Bluetooth alternator regulator for enhanced control and lithium battery charging.
• Certified Reliability: Meets SAE J1171 standards, ensuring top-tier quality and performance.
• Made in the USA: Proudly manufactured in the United States, supporting local industry and maintaining high production standards.

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

Easy Installation and Compatibility

The Zeus A225S is designed for straightforward installation on most marine vessels. It replaces most domestic alternator styles using a single 1” or 2” mounting foot, making it compatible with popular brands such as Motorola and Prestolite. This flexibility ensures a hassle-free upgrade to your current electrical system.

Why Choose Zeus A225S for Your Marine Needs?

• Reliability on the Water: Built to withstand the harsh marine environment, ensuring long-lasting performance.
• Enhanced Power Management: Reduces reliance on generators by efficiently harnessing engine power for additional electrical needs.
• Superior Cooling Solutions: Keeps the alternator running cooler, enhancing overall system longevity and performance.
• Advanced Regulation: Pair with a Bluetooth alternator regulator for real-time monitoring and optimal battery charging.

Upgrade your marine electrical system with the Zeus A225S Alternator and experience unparalleled power, efficiency, and reliability on every voyage.

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.