ARCO Marine Zeus A8000 48V 8kW J180 4 Inch Alternator with Isolated Ground
-
Estimated Delivery:Oct 25 - Oct 29
-
Free Shipping: On all orders over $150
Guarantee safe & secure checkout

ARCO Marine Zeus A8000 48V 8kW J180 4 Inch Alternator with Isolated Ground
Stories
Stories
Stories
ARCO Marine Zeus A8000 48V 8kW J180 4 Inch Alternator with Isolated Ground
Introducing the ARCO Marine Zeus A8000 48V alternator, a cutting-edge solution for your power generation needs. This exceptional alternator stands out in the market for its impressive efficiency and reliability. Designed specifically for marine applications, the Zeus A8000 delivers superior performance with a remarkable output of over 3kW (55 Amps) at just 2,500 RPM, ensuring you never run short on power.
What makes the Zeus A8000 the ideal choice for your vessel? Here are some key features:
- Low RPM Operation: Engages at lower RPMs, making it perfect for a variety of marine conditions.
- High Efficiency: Generates almost 6kW (111 Amps) power, far exceeding typical 48V alternators.
- Isolated Ground Design: This innovative feature enhances safety and performance, minimizing the risk of electrical interference.
- Compact and Lightweight: Weighs less and occupies less space than traditional, bulkier alternators, making installation a breeze.
Engineered by ARCO Marine, a trusted name in engine parts & service, the Zeus A8000 is crafted from high-quality materials to ensure longevity and dependability in rugged marine environments. This alternator not only runs cooler but also outperforms larger alternatives, making it a smart choice for those who demand the best.
Upgrade your marine electrical system with the ARCO Marine Zeus A8000 and experience unmatched power, efficiency, and reliability. Don't settle for less—make the switch today!
Zeus A8000-48V 8kW J180 4" Alternator with Isolated Ground
The ARCO Zeus A8000-48V alternator turns on at lower RPMs, runs cooler, and provides more power than other 48V alternators that are larger and heavier. This alternator continuously generates over 3kW (55 Amps)at 2,500 RPM and almost 6kW (111 Amps) at 4,000 Alternator RPM. Put in real-world terms, a marine diesel engine charging at 1,200 RPM with a 3.13:1 pulley ratio is generating just over 5kW (97 Amps), and a Mercedes Sprinter at 750 RPM with a 3.21:1 ratio is generating over 3kW (55 Amps)!
Instead of using rotors designed for 48 volts, many competitor alternators simply use their 12V rotors which is less efficient and limits output at all RPMs. In this scenario, your external smart regulator must drastically reduce field, by as much as 78%. If this is not done correctly, you run the risk of destroying the unit and damaging other components in your system. ARCO utilizes a native 48V rotor and field current. This results in our 48V alternator running cooler than competitor’s 48V alternators, having a direct impact on the alternator’s lifespan.
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:
- 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, keeping the high amp alternator cooler for sustained amperage output.
- Use the ARCO Zeus Bluetooth Alternator Regulator for maximum performance or lithium battery charging.
- SAE J1171 Certified.
- Proudly made in the U.S.A.
Technical Specifications:
- Voltage - 48v
- Field Type - P
- Rotor Poles - 16
- Stator Size - 138mm
- Frame Size - Large
- Weight - 15.89lbs/7.2kg
- Regulation - External Only
- Finish - (Black) E-coating
- Cut-In RPM - 1,920 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, 80A Rated, Avalanche
- Max Output (Cold, 9,000 RPM) at 53.5v - 180 Amps - 9,360 Watts – 14.8 kW PTO
- Sustained Cruising Output (Hot, 6,000 RPM) at 53.5v - 138 Amps - 7,383 Watts – 10.5 kW PTO
- Sustained Idle Output (Hot, 2,500 RPM) at 53.5v - 78 Amps 4,173 Watts – 6kW PTO
- Max Continuous Operating Temperature - 100°C / 212°F
Mounting Application:
- Replaces most Volvo Penta alternators using a 4” J180 saddle-style mount. Also, used on many larger industrial-based engines.
Shipping Policy
Thank you for choosing Outdoors.Supply. We aim to deliver your gear efficiently and reliably.
Carriers
We ship all orders via UPS Ground or FedEx Ground, depending on availability and destination.
Shipping Rates
- Orders under $150: Flat shipping rate of $15
- Orders $150 and above: Free shipping
Note: A handling fee of $7.50 may apply to certain items. If applicable, it will be clearly stated during checkout.
Order Processing
- Orders placed before 12:00 PM ET (Monday–Friday): Processed the same business day
- Orders placed after 12:00 PM ET or on weekends/holidays: Processed the next business day
Delivery Time
All orders are delivered within 3–7 business days from the date of shipment, depending on your location.
For any questions or concerns about your order, please contact us at [hello@outdoors.supply]. We’re here to help!
Discover more in our FAQ
How long does it take to process an order?
All orders are processed the same business day if placed before 12 PM EST. Orders placed after 12 PM EST are processed the following business day.
Do you ship internationally?
No! Currently we are only supporting shipments to contiguous United States. We do not ship to PO Boxes or Internationally.
What is your return policy?
No Returns
Due to the nature of our products and our commitment to ensuring the highest quality standards, we do not accept any returns under any circumstances.
No Refunds
We do not offer refunds for any reason, including but not limited to:
- Change of mind
- Incorrect size or style ordered
- Delayed shipping
- Product dissatisfaction
Please refer to our Refund Policy
What are your sizing options?
We have a size chart displayed on most products to reflect the sizing as accurate as possible. Please review the size chart and ensure you are leveraging the closest size possible.
Let customers speak for us
Recently Viewed Products
Why You'll Love ARCO Marine Zeus A8000 48V 8kW J180 4 Inch Alternator with Isolated Ground
Premium Quality
ARCO Marine is known for exceptional quality and attention to detail in every product.
Fast Shipping
Fast and reliable shipping to get your ARCO Marine Zeus A8000 48V 8kW J180 4 Inch Alternator with Isolated Ground to you quickly.
Satisfaction Guarantee
Backed by our comprehensive warranty for complete peace of mind.
Expert Support
Our dedicated support team is here to help with any questions about ARCO Marine Zeus A8000 48V 8kW J180 4 Inch Alternator with Isolated Ground.