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Description
ARCO Marine Zeus A275L Vortec Alternator w/RegulatorZeus A275L 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, and OEM
Zeus A275L 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, and OEM Components.
- It is 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 A275L cooler. This translates to more amperage for sustained periods.
- Use an ARCO Zeus Bluetooth alternator regulator or lithium battery charging for maximum performance.
- SAE J1171 Certified.
- Made in the U.S.A.
Technical Specifications:
- Voltage - 12v
- Field Type - P
- Rotor Poles - 16
- Stator Size - 138mm
- Frame Size - Large
- Weight - 14.9 lbs/6.7 kg
- Regulation - Internal/External (Internally regulated with adaptor for optional external regulation.)
- 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) - 311 Amps
- Sustained Cruising Output (Hot, 6,000 RPM) - 227 Amps
- Sustained Idle Output (Hot, 3,000 RPM) - 198 Amps
- Max Continuous Operating Temperature - 110°C / 230°F
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)
Quick Guide (pdf)
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 ★★★★★
Based on 23 reviews
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Product Reviews
★★★★★ 5
Really good eczema lotion for 4 month old baby
Love this lotion. I’ve been using it for almost two weeks now on my baby who has eczema, I didn’t wanna waste money on the baby version because what if it isn’t as powerful so I got this one and now my baby’s cheeks aren’t red and spotty. Honestly didn’t think it would work but it’s working great, I add it all over his body especially his face after he showers and it helps his itchiness at night. During the day I add some if the redness looks like it’s coming back and it ends up going away mid day. I’ve used about 4-5 other lotions that didn’t work so I’m very happy about this one.
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Reviewed in the United States on May 7, 2026
★★★★★ 5
LOVE THIS!
I have allergies and overall just super sensitive skin. Sometimes I just randomly get itchy or get hives. I bought this during a time I was trying all the lotions just to find something that would help.
To be honest, I shower in the morning and apply this and it helped my skin tremendously. I wouldn’t be itchy after showers. Hives were few and far between.
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Reviewed in the United States on June 5, 2026
★★★★★ 5
AMAZING! Works better than my RX
After being prescribed hydrocortisone 2.5% to help with my eczema I felt it wasn't doing enough. Healing time was slow and the scaling itching was still bad at night. I don't know why it took me so long to try the Aveeno Eczema line, I really wish I did sooner. This product is AMAZING! I started using this twice a day AM/PM after washing my face with cold water only and stopped using the hydrocortisone completely. My skin healed in 5 days!
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Reviewed in the United States on May 5, 2026
★★★★★ 4
Aveeno Eczema nighttime balm
I love Aveeno. This is my first purchase of the Eczema nighttime balm. It is super thick. It feels like Vaseline. It does feel greasy after you put it on. Obviously it is for eczema so it has to be moisturizing. I do have eczema. Aveeno lotions imo do not feel greasy after you apply which is why I love their lotions. This balm is definitely perfect for applying at nighttime to help heal your skin while you have some down time. My skin always splits due to extremely dry skin even though I use lotions every time I wash my hands and after showers. This would be perfect after a shower to lock in the moisture. I would definitely recommend. I use the silicone “socks” at night when my feet are in need of moisture. This would be perfect to use before putting on the silicone socks. The silicone socks do feel like chicken cutlets being put on your feet but in the morning when you take them off my feet are so soft and smooth. I can turn the jar upside down and it didn’t move, that’s how thick it is. I will purchase again.
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Reviewed in the United States on June 5, 2025
★★★★★ 5
This worked when nothing else did
I never had eczema in my life until perimenopause decided to surprise me with it. It was so bad I genuinely thought I was having an allergic reaction to something. Went to the doctor, did two rounds of prescription steroid creams, tried pretty much everything over the counter I could find. Nothing fully knocked it out.
Started using this every night before bed and my skin was cleared up in less than two weeks. Two weeks. After months of dealing with it and throwing everything at it, this is what finally did it.
It goes on smooth, doesn’t sting on irritated skin, and there’s no fragrance which matters when your skin is already angry. It’s thick enough to feel like it’s actually doing something without being greasy or gross on your sheets.
If you’re dealing with eczema for the first time and you’re frustrated because nothing is working — I was you. Try this before you spend another copay on a dermatologist visit.
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Reviewed in the United States on May 14, 2026