![ARCO Marine Zeus A225S Vortec Alternator w/Regulator [4018]](https://cdn.shopify.com/s/files/1/0855/3916/0358/files/107334XL.jpg?v=1736193884)
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Description
ARCO Marine Zeus A225S Vortec Alternator w/Regulator [4018]Zeus A225S Vortec 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
Zeus A225S Vortec 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 Mando type alternators using Vortec/ GM pad mounting feet (Found on many Mercruiser and Volvo Penta 3.0GLM, 3.0GLP, 4.3GXi, 5.7GiL, 5.7GXiL Marine Engines.) (GM Blocks)
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
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★★★★★ 5
An important book
Format: Kindle
A very good treatment of the subject matter, especially valuable as it mines the Japanese sources, which have largely been ignored by the Western historians. The narrative is clear and easy to follow & background detail gives important context into the psychological aspects of the events. Definitely recommended!
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Reviewed in the United States on December 14, 2025
★★★★★ 5
Good
Format: Paperback
Good
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Reviewed in the United States on January 18, 2019
★★★★★ 4
Very interesting
Format: Paperback
A book that highlights how information is collected and stored by law enforcement
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Reviewed in the United States on August 17, 2018
★★★★★ 1
Poor quality: falling apart
Format: Paperback
Book was falling apart at seam when I received it and I left feedback about the poor condition of the book.
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Reviewed in the United States on April 6, 2022
★★★★★ 5
Liquid Gold for Old Engines
Style: Full Synthetic High Mileage, Size: 5 qt (Pack of 1), Configuration: 5W-30
Valvoline Full Synthetic High Mileage with MaxLife Technology SAE 5W-30 Motor Oil for my car. Designed specifically for vehicles with over 75,000 miles, this oil provides exceptional performance and protection. Its advanced formula includes conditioners that help rejuvenate seals and reduce oil leaks—something I noticed right away after switching to this product.
I’ve noticed less engine noise, even during cold starts, which used to be a problem in the past. The wear protection offered by this motor oil is also impressive. Knowing it fights sludge and deposits gives me peace of mind, especially since I live in an area with fluctuating temperatures. Whether it’s a hot summer day or a cold winter morning, this oil performs consistently well. It’s also rated for excellent viscosity stability, which means it doesn’t thin out or degrade over time like some other oils I’ve tried.
Another thing I love about this product is how it helps improve fuel efficiency. Since I started using it, I’ve seen a slight but noticeable improvement in my gas mileage. I’ve also read that Valvoline includes anti-wear additives that extend engine life, and so far, that’s been true in my experience. My car doesn’t burn oil as quickly as it used to, so I’m not having to top it off as often as I did with other brands. The convenience of longer intervals between oil changes is a bonus.
Overall, Valvoline Full Synthetic High Mileage with MaxLife Technology SAE 5W-30 Motor Oil is an outstanding product for anyone with a high-mileage vehicle. It’s affordable, easy to use, and does exactly what it promises. Whether you’re trying to extend the life of your aging car or prevent costly repairs, this oil is a solid investment. I wouldn’t hesitate to recommend it to anyone looking to keep their car running smoothly for years to come.
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Reviewed in the United States on January 7, 2025