ARCO Marine Zeus A225S J-180 3.15" Alternator w/Terminal Block

The Zeus A225S J-180 3.15" Alternator with Terminal Block is the ultimate power solution for marine enthusiasts, delivering unparalleled energy output and reliability tailored for boating applications.

Key Features

• Engineered for high energy production, ensuring ample power for all your marine needs.
• Ideal for marine, RV, military, and commercial applications.
• Rapidly charges large battery banks, minimizing downtime.
• Operates at cooler temperatures, running 8-20% cooler than standard alternators through:
  • Heat-shedding coatings
  • External rectifier
  • Dual cooling fans
• Equipped with OEM components for durability and longevity.
• Optimized performance at idle speeds, perfect for marine engines.
• Reduces the necessity for generators by providing additional power directly from your engine.
• Enhanced with E-Coat/Cerakote coating, absorbing less heat for sustained amperage.
• Compatible with ARCO Zeus Bluetooth alternator regulator for maximum performance and lithium battery charging.
• SAE J1171 Certified for quality assurance.
• Proudly manufactured in the USA.

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

• Compatible with most small case styles using a 3.15” J180 saddle-style mount, including popular models like Hitachi, Lucas, Mitsubishi, and most Yanmars.

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.