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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
4.3 ★★★★★
Based on 22 reviews
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Product Reviews
★★★★★ 3
Didn't realize this was just a print version of the docs
Format: Paperback
The official rust docs in book form.
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Reviewed in the United States on April 21, 2026
★★★★★ 5
Best Rust 2024 reference in a while :) :) :)
Format: Paperback
I got this because I have the 2nd edition and I use Rust 2024. I only gloossed thru it, It looks good and comprehensive I mainly will use it for reference (I'm a augmented vibe engineer in AI-SLDC, on Gemini Platform, and I output Rust 2024 code) This is a good buy that anyone interested in Rust should have :) :) :)
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Reviewed in the United States on April 24, 2026
★★★★★ 5
Pretty great!
Size: 3 Count, Size: 3 Count
Hygiene is obviously a big deal. I ordered these to separate which cloths wash different parts of my body, we don’t mix the bottom half with the top half on this side, LOL. These worked pretty great, no complaints really. The rough side feels nice on the skin and you definitely get that exfoliating feeling. The soft side is neat & smooth on the skin & the loops are great to hang on shower rack hooks.
Only downside for me is they’re a little hard to keep a hold of while in the shower, LOL. A small hand loop or something may have helped. But I also think it’s something you can just get used to. I found them easier to use and keep a hold of whilst facing the water.
Overall, a great purchase! Hope this helps!
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Reviewed in the United States on February 28, 2023
★★★★★ 5
Regular customer: You won't be disappointed
Size: 3 Count
Why did you pick this product vs others?:
I originally ordered it for my boyfriend but he didn’t use it. So I tried it out and now it’s become my regular re-order.
Use:
Exfoliates well without damaging skin (I have sensitive dry skin) softens my skin before shaving
Functionality:
Perfect for exfoliating, love the design: both sides being useful
Material quality:
Excellent quality
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Reviewed in the United States on June 23, 2025
★★★★★ 4
Great but slippery
Size: 3 Count
Always disliked how wash clothes are too gentle and soft. I don’t feel clean with them. This one however is very rough. Love it. I feel clean.
I gave 4 stars b/c the cloth is very slippery. A bit hard to get a decent grip while using it. Literally slides right out of your hand.
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Reviewed in the United States on April 26, 2026