![ARCO Marine Zeus A275L 1"-2" Single Foot Alternator w/Terminal Block [4027]](https://cdn.shopify.com/s/files/1/0469/0945/6544/files/107326XL.jpg?v=1763589230)
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Ships within 48 hours · Estimated delivery Jul 9 - Jul 14
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Description
ARCO Marine Zeus A275L 1"-2" Single Foot Alternator w/Terminal Block [4027]Zeus A275L 1" 2" Single Foot Alternator with Terminal Block 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
Zeus A275L 1"-2" Single Foot Alternator with Terminal Block
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 - External Only (These units will come with a terminal block and a P-Type harness. They will only work with an external regulator, such as an ARCO Zeus Bluetooth alternator regulator.)
- 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 most domestic styles using a single 1” or 2” mounting foot (e.g., Motorola, Prestolite)
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
4.3 ★★★★★
Based on 243 reviews
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Product Reviews
★★★★★ 5
Favorite charger
Size: 10FT, Color: Yellow
This is my 3rd purchase of this brand of charger (different colors). The yellow color is just as pictured. These chargers always fit flawlessly with my iphone15 pro. The charger provides a fast and lasting charge for my phone, iPad, or anything else I connect it to. I love the bright color options. I highly recommend this charger because they are durable and provide a quick, long lasting charge.
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Reviewed in the United States on April 21, 2026
★★★★★ 5
Perfect charger
Size: 10FT, Color: White
Very impressed with how quickly the charger works. The longer cable has made it easier to use the phone while charging and sitting on the couch. No issues with the cable getting tangled or fraying like I have had with others, or pinching and breaking the connection.
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Reviewed in the United States on May 10, 2026
★★★★★ 5
Impressive and durable
This charger is a fantastic alternative for powering up MacBook Pro, Air, iPad Pro, and other USB-C devices. The charging speed is impressively fast, delivering a full charge to my MacBook Pro in no time. It’s also highly versatile, working seamlessly with my Samsung Galaxy and other USB-C gadgets.
The included charging cable is durable and long enough for flexible use, making it convenient for home, office, or travel. The build quality feels solid and reliable, and it doesn’t overheat even during extended use.
If you’re looking for a high-performance, cost-effective charger, this one ticks all the boxes. Highly recommended for anyone needing a dependable USB-C charger! charger is a fantastic alternative for powering up your MacBook Pro, Air, iPad Pro, and other USB-C devices. The charging speed is impressively fast, delivering a full charge to my MacBook Pro in no time. It’s also highly versatile, working seamlessly with my Samsung Galaxy and other USB-C gadgets.
The included charging cable is durable and long enough for flexible use, making it convenient for home, office, or travel. The build quality feels solid and reliable, and it doesn’t overheat even during extended use.
If you’re looking for a high-performance, cost-effective charger, this one ticks all the boxes. Highly recommended for anyone needing a dependable USB-C charger!
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Reviewed in the United States on December 27, 2024
★★★★★ 5
Solid charger for the price
Picked this up as a backup for MacBook Air and honestly its been working great. It is enough to fast charge the laptop even while Im using it which is all I really needed. Also tried it on my iPhone and it works well. Easy to connect, no need to setup anything
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Reviewed in the United States on May 27, 2026
★★★★★ 5
Durable - Works for my Mac and my kids’ computers
My kids are constantly losing my MacBook charger and they’re expensive! So on Prime Day I treated myself and bought this charger - which I told them they’re never ever allowed to touch under any circumstances.
The brick is pretty big compared to what I’m used to. The cord length is fine and it charges my MacBook quickly just like I wanted it to! I was really pleasantly surprised by how legit this charger is for the price, given how costly they can be. It seems really sturdy.
Turns out, this charger also fits the Chromebooks that all 3 of my kids use for school, and whose chargers are always missing. So “my” charger is once again a shared charger. But it gets all 3 Chromebooks and my laptop fully charged in a night. Nice, easy, durable product for a great price.
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Reviewed in the United States on August 16, 2025