![ARCO Marine Zeus A225S Vortec Alternator w/Regulator [4018]](https://cdn.shopify.com/s/files/1/0469/0945/6544/files/107334XL.jpg?v=1763589232)
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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
4.2 ★★★★★
Based on 949 reviews
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Product Reviews
★★★★★ 5
This sunscreen has worked well for me and I like that it is a mineral formula
Set name: Face - 1.7 oz.
This sunscreen has worked well for me and I like that it is a mineral formula. The main thing to know is that it can take a little effort to rub in fully so you do not see it on your skin, but I do not consider that a major problem. That is pretty normal with many mineral sunscreens, and I would rather deal with that than use something that does not agree with my skin. Once applied, I have been happy with it and have no real complaints. Overall, it has been a good face sunscreen for me.
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Reviewed in the United States on March 10, 2026
★★★★★ 5
Best sunscreen ever
Set name: Face - 1.7 oz.
I love how light it is, it doesn’t leave a white cast. It even leaves skin looking glowy. It also feels moisturizing. I have sensitive skin that breaks out with sunscreen. It doesn’t breakout with this one! I also love that it’s hsa eligible! Have already recommended and shared with others. I will never switch to another sunscreen.
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Reviewed in the United States on May 26, 2026
★★★★★ 4
Works great but very runny
Set name: Face - 1.7 oz.
I’d call this a liquid and not lotion. It literally pours out of the tube without even squeezing so has to be held upright at all times when the cap is off. Makes a real mess (and I do shake it well before opening as the instructions say).
Other than the packaging, I really like the product. It blends well with no white cast after rubbing in, is moisturizing without looking greasy at all or causing breakouts, and has provided good sun protection. Impressed! Also like that while water and sweatproof, it washes off with a gentle face cleanser at the end of the day unlike some of the zinc-based products I’ve tried that leave a thick coating and require scrubbing.
This is my first Blue Lizard product and I’ll probably keep using it as a daily sunscreen—but definitely not to throw in a bag and take to the beach because of the messy application. Bought the stick version to try out.
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Reviewed in the United States on July 1, 2022
★★★★★ 5
Great for sensitive skin and actually dries clear!
Set name: Body - 3 oz., Set name: Body - 3 oz.
I'm trying to be on top of my sunscreen application after YEARS of never wearing it. My skin is extremely sensitive and prone to eczema. Any chemical sunscreen that was applied to my body (especially the elbow/knee pits) would cause me to break out in horrible eczema patches. I switched to mineral sunscreen, but everything left a ghostly white sheen.
Luckily, this sunscreen does exactly as advertised. I've been using it daily for a week straight, and I have had no problems with it. The consistency of this product is thick, kinda sticky at first, and a bit hard to blend/spread out, but I think that's bound to happen with any sunscreen that's actually protective. It may also seem that it leaves a white cast initially, but after letting it dry for a minute or two, it becomes clear.
Overall I can't recommend this enough, and I'm glad to finally have a sensitive-skin-friendly mineral sunscreen that doesn't leave a white cast :)
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Reviewed in the United States on April 1, 2026
★★★★★ 5
Where has this been my whole life
Set name: Face - 1.7 oz., Set name: Face - 1.7 oz.
Let me give you some background. I’m middle eastern. That means I tan well but have two different skin tones; my January skin and my July skin. I wear a watch and I’ve been out of the sun since September. My tan hasn’t totally faded but the lighter band, that’s my real skin color. That’s how I want to be all over.
I always try to make better choices in my skin products. I have tried so many mineral based sunscreens for my face and body but I usually end up returning to a chemical based one for several reasons.
HOWEVER, I have finally found the product I’ve been searching for. Blue Lizard leaves no white cast on my skin. It’s easy to rub in. It also does not get trapped in my dense, black eyebrows the way other products did. It would gross me out and look like I had flakes in my eyebrows. I just spent the week at Universal Studios and I did not burn. I didn’t tan either, which is great. Tanning is also a sign of sun damage. Chemical or mineral sunscreens often prevent sunburn but I still tan. I don’t want either. I am sold and will continue to buy this product. I feel great about that it has safer and better quality ingredients.
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Reviewed in the United States on April 4, 2026