ARCO Marine Zeus A225S J-180 3.15″ Alternator w/Regulator
Login to see prices $818.10
ARCO Marine Zeus A225S J-180 3.15″ Alternator w/Regulator
Weight | 14 lbs |
---|
SKU:
A225S-12-DF315-IE-49K6
Categories: Alternators, Alternators, Engine Parts & Service, Electrical
Description
Zeus A225S J-180 3.15" Alternator with Regulator
The highest power output alternator in its size/class.
Features:
- Engineered for High Energy Production.
- Suitable for Marine, RV, Military, and Commercial applications.
- Rapidly charges large battery banks.
- Coolest operating temperatures for increased performance. Runs 8 – 20% cooler than incumbent alternators due to:
- Heat shedding coatings
- Rectifier located on housing exterior
- Dual cooling fans
- OEM Components
- Optimized for performance at idle speeds.
- Reduces the need for a generator by creating additional power with your engine.
- Unleash peak performance with E-Coat/Cerakote. Our advanced coating absorbs less heat, keeping the A225S cooler. This translates to more amperage for sustained periods.
- For maximum performance or lithium battery charging, use an ARCO Zeus Bluetooth alternator regulator.
- SAE J1171 Certified.
- Proudly made in the U.S.A.
Technical Specifications:
- Voltage – 12v
- Field Type – P
- Rotor Poles – 16
- Stator Size – 130mm
- Frame Size – Small
- Weight – 12lbs/6.7kg
- Regulation – Internal/External
- 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, w/ 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:
- Replaces most small case styles using a 3.15” J180 saddle style mount (e.g., Hitachi, Lucas, Mitsubishi) Most Yanmars.
This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.
Shipping & Delivery


⚓ Smooth Sailing Shipping
Enjoy FREE standard shipping on most orders over $250 within the continental U.S. (excl. heavy/oversized/hazardous items).
We ship via UPS, FedEx, and USPS . Orders are processed in 1–2 business days with typical delivery in 1–5 business days .
🧭 Track The Voyage
You’ll receive tracking info by email once your order ships. If your package is marked “delivered” but not received, please wait 48 hours then reach out to our team.
🛟 Hassle-Free Returns & Exchanges
Returns accepted within 30 days of delivery. Items must be unused and in original packaging.
- Mistaken or damaged cargo? We’ll handle return shipping.
- Changed your course? Return shipping is on you.
- Report defects or damage within 7 days for a free exchange.
💰 Anchor Your Refund
Refunds go back to your original payment method within 5–7 business days after inspection.
📨 Contact the Crew
Questions about your order? Drop anchor at sales@marineelec.com .