ARCO Marine Zeus A225S Vortec Alternator w/Regulator

The Zeus A225S Vortec Alternator with Regulator is designed to deliver unparalleled power and reliability for marine and boating applications. Engineered to meet the demanding energy needs of your vessel, this alternator ensures your electrical systems run smoothly, even under heavy loads.

Key Features

• High Energy Production: Maximizes power output to support all your marine electrical needs.
• Versatile Applications: Perfect for marine, RV, military, and commercial use.
• Rapid Battery Charging: Efficiently charges large battery banks, reducing downtime.
• Enhanced Cooling: Operates 8-20% cooler than standard alternators, thanks to:
  • Heat-shedding coatings
  • External rectifier placement
  • Dual cooling fans
• OEM Quality Components: Built with original equipment manufacturer parts for durability and reliability.
• Optimized Idle Performance: Delivers consistent power even at low engine speeds.
• Reduced Generator Dependence: Generates additional power using your engine, minimizing the need for separate generators.
• Advanced Coatings: Features E-Coat or Cerakote, which absorb less heat and maintain higher amperage over sustained periods.
• Bluetooth Regulator Compatibility: Pair with an ARCO Zeus Bluetooth alternator regulator for maximum performance or lithium battery charging.
• Certification: SAE J1171 Certified for quality and performance standards.
• Made in the USA: Proudly manufactured in the United States, ensuring top-notch quality.

Technical Specifications

Specification	Details
Voltage	12V
Field Type	P
Rotor Poles	16
Stator Size	130mm
Frame Size	Small
Weight	12 lbs / 5.44 kg
Regulation	Internal/External
Output Voltage	14.1V (default)
Finish	Black Cerakote or E-Coating
Cut-In RPM	1,061 Alternator RPM
Maximum Alternator 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 Application

The Zeus A225S Vortec Alternator is designed to seamlessly replace Mando-type alternators, utilizing Vortec/GM pad mounting feet. It is compatible with numerous GM block engines, including:

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

Why Choose the Zeus A225S Vortec Alternator?

Choosing the Zeus A225S means investing in a high-performance alternator that ensures your marine vessel's electrical system operates efficiently and reliably. With superior cooling technology, robust construction, and compatibility with advanced regulators, this alternator is built to meet the rigorous demands of marine environments. Whether you're cruising, fishing, or engaging in other marine activities, the Zeus A225S provides the power you need to keep your systems running smoothly.

Customer Testimonials

“Since installing the Zeus A225S on my yacht, I’ve noticed a significant improvement in my battery charging times and overall electrical reliability. Highly recommend for any serious boater.” – John D.

“Excellent build quality and performance. It keeps everything running smoothly even on long voyages.” – Sarah M.

Related Products

• ARCO Zeus Bluetooth Alternator Regulator
• Heavy-Duty Marine Battery Bank
• Dual Cooling Fans for Alternators

Specifications Summary

Feature	Description
Voltage	12V
Max Output	254 Amps at 9,000 RPM
Sustained Output	187 Amps at 6,000 RPM (Hot)
Weight	12 lbs / 5.44 kg
Finish	Black Cerakote or E-Coating
Certification	SAE J1171 Certified
Manufactured	USA

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.