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Description
ARCO Marine Zeus A275L J180 4" Alternator w/Isolated Ground Terminal Block [4023]Zeus A275L J180 4" Alternator with Isolated Ground & 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. Heat shedding coatings Rectifier located on housing exterior Dual cooling fans OEM components Optimized for performance at
Zeus A275L J180 4" Alternator with Isolated Ground & 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.
- 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, keeping the A275L cooler for sustained amperage output.
- Use the ARCO Zeus Bluetooth Alternator Regulator for maximum performance or lithium battery charging.
- SAE J1171 Certified.
- Models available with internal/external voltage regulator.
- Proudly 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 Applications:
- Replaces most Volvo Penta alternators using a 4” J180 saddle-style mount
Quick Guide (pdf)
Brochure (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
4.8 ★★★★★
Based on 24 reviews
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Product Reviews
★★★★★ 5
Great little rug!
Color: Ivory White, Size: 2' x 3' (Sheepskin Shape), Color: Ivory White, Size: 2' x 3' (Sheepskin Shape)
This nice little sheepskin rug is the perfect finishing touch to my little reading nook. It’s soft and thick. Follow the enclosed instructions to fluff it up. I was going to order a second one but saw that the price jumped nearly $10 in a week. It’s nice but it’s not worth that amount. I’d buy it on sale though. Five stars.
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Reviewed in the United States on April 6, 2026
★★★★★ 5
ABSOLUTELY BEAUTIFUL
Color: Snow Grey, Size: 24''x72''
Beautiful & exactly as described. We use this on our recliner & it is perfect!
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Reviewed in the United States on February 5, 2026
★★★★★ 5
I like this company I'm happy So far
Color: Ivory White, Size: Round 48'', Color: Ivory White, Size: Round 48''
I do like their stuff I've bought a lot of stuff from them and I'm happy with the purchases I'd give them a good review I like the backs that they have the material or the silicone on some of theirs for non-slip for my Service dog As he uses all of these a lot and really loves them So definitely pet approved also I like the color and size and have had good luck with LLB
I will be ordering more I've ordered a lot already
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Reviewed in the United States on October 18, 2025
★★★★★ 1
Unfortunately I can’t recommend it.
Color: Ivory White, Size: Round 48''
I got my carpet time ago but I opened the package just 3 days ago. Unfortunately I can’t take it back anymore. I opened the bag after I had done my daughter’s bedroom with flooring and walls painted. Sadly when I opened this bag the smell was sooooo bad. The material was not soft and the color was more yellow than ivory. The quality is not good. It is thick and the value of the money was extremely expensive which makes more disappointing that I can’t take it back. Not easy to clean and the size was ok. But I can’t recommend it.
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Reviewed in the United States on September 4, 2024
★★★★★ 5
Exactly as pictured and described
Color: Taro Purple, Size: Round 48'', Color: Taro Purple, Size: Round 48''
I absolutely love this. I have it under my office chair in my home office and it is so luxurious to feel this under my feet while I'm working. It came shrinkwrapped and took a day or two to fluff back out and lose the creases. It looks great now. I didn't notice any odor when I opened it. Shipping was fast and it was very well packaged. I was very pleased with it. I would definitely buy again.
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Reviewed in the United States on November 23, 2024