![ARCO Marine Zeus A225S Vortec Alternator w/Regulator [4018]](https://cdn.shopify.com/s/files/1/0704/3376/7726/files/107334XL.jpg?v=1736212730)
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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
4.9 ★★★★★
Based on 25 reviews
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Product Reviews
★★★★★ 5
Foldable panel
Color: Grey
It's perfect for my needs and space. I'm using it as a design wall for my quilting projects.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2026
★★★★★ 4
Decent at dampening sound
Color: Grey, Color: Grey
This partition was easy to assemble and is stable. My husband and I both work from home, and the desire was to have a sound barrier. It definitely dampens the noise. If it was another foot taller, that would be even better at dampening the noise. Obviously, we still hear one another quite well, but the partition simply softens the noise of each other.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 30, 2026
★★★★★ 5
CEO
Color: Grey
Work perfect
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 3, 2026
★★★★★ 5
Easy Install, Great Quality, Mobile Partition
Color: Grey
This is the easiest install I've ever had in my life, took about 5 minutes. These panels come pre-assembled, minus the wheels, which screw into the base pieces in pairs. The material is a very pleasant "corporate grey" - I only worry about its color fastness over time.
I needed a practical solution for my garage, which has glass garage doors that let in a ton of sun/heat and even with privacy film still parade around my tools and belongings visibly to anyone walking by. These partitions are functional for both of my needs, and if I have a visitor needing to park in my second spot it takes 5 seconds to wheel these out of the way.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 15, 2026
★★★★★ 5
Nice, convenient partition that absorbs sound
Color: Grey, Color: Grey
What stood out
* Instant partition: This 3-panel foldable office partition helps to create quiet zones in a shared room, and it genuinely helped carve out a more focused space without a major renovation. The panels feel substantial yet easy to move thanks to the wheels, so I can roll them into position when I need privacy or a professional background for video meetings. I can fold them flat against a wall when I don’t nee them. The aluminum frame gives it enough rigidity to stay upright, and the gray finish is neutral. The height and width are generous for desktop setups, meetings, or study areas, and because it’s modular you can arrange it in L-shapes, straight lines, or even semi-circles. The mobility makes it flexible for dynamic spaces — roll it out for working hours, tuck it away after.
* Sound insulation: It's heavy, which is better for sound isolation. The sound-dampening design isn’t miracle acoustic treatment, but it noticeably softens background chatter and echoes — enough to make video calls and focused work feel less disrupted.
* Assembly is super easy, but I would recommend to have two people to make it easier.
What to keep in mind
* It’s not sound-proof like a built-in wall, so loud noises still carry; it’s best for softening ambient sounds, not blocking them completely.
* The gray color is neutral, but if your room palette is bold you might want to accent with décor so it doesn’t look utilitarian. You can also tack posters and light pictures to the the gray frames.
* It's pricey, but worth it in my opinion.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 19, 2026
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