SKU: 12245074222

ARCO Marine Zeus A8000-48V 8kW 3.15 Alternator w/Isolated Ground (Common Rail) [4602]

Sale price$964.76 Regular price$1071.95
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Ships within 48 hours · Estimated delivery Jul 20 - Jul 25

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Description

ARCO Marine Zeus A8000-48V 8kW 3.15 Alternator w/Isolated Ground (Common Rail) [4602]Zeus A8000 48V 8kW 3. 15 Alternator with Isolated Ground (Common Rail) The ARCO Zeus A8000 48V alternator turns on at lower RPMs, runs cooler, and provides more power than other 48V alternators that are larger and heavier. This alternator continuously generates over 3kW (55 Amps) at 2,500 RPM and almost 6kW (111 Amps) at 4,000 Alternator RPM. Put in real world terms, a marine diesel engine charging at 1,200 RPM with a 3. 13: 1 pulley ratio is

Zeus A8000-48V 8kW 3.15 Alternator with Isolated Ground (Common Rail)

The ARCO Zeus A8000-48V alternator turns on at lower RPMs, runs cooler, and provides more power than other 48V alternators that are larger and heavier. This alternator continuously generates over 3kW (55 Amps) at 2,500 RPM and almost 6kW (111 Amps) at 4,000 Alternator RPM. Put in real-world terms, a marine diesel engine charging at 1,200 RPM with a 3.13:1 pulley ratio is generating just over 5kW (97 Amps), and a Mercedes Sprinter at 750 RPM with a 3.21:1 ratio is generating over 3kW (55 Amps)!

Instead of using rotors designed for 48 volts, many competitor alternators simply use their 12V rotors which is less efficient and limits output at all RPMs. In this scenario, your external smart regulator must drastically reduce field, by as much as 78%. If this is not done correctly, you run the risk of destroying the unit and damaging other components in your system. ARCO utilizes a native 48V rotor and field current. This results in our 48V alternator running cooler than competitor’s 48V alternators, having a direct impact on the alternator’s lifespan.

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 high amp alternator cooler for sustained amperage output.
  • Use the ARCO Zeus Bluetooth Alternator Regulator for maximum performance or lithium battery charging.
  • SAE J1171 Certified.
  • Proudly made in the U.S.A.

Technical Specifications:

  • Voltage - 48v
  • Field Type - P
  • Rotor Poles - 16
  • Stator Size - 138mm
  • Frame Size - Large
  • Weight - 15.89lbs/7.2kg
  • Regulation - External Only
  • Finish - (Black) E-coating
  • Cut-In RPM - 1,920 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, 80A Rated, Avalanche
  • Max Output (Cold, 9,000 RPM) at 53.5v - 180 Amps - 9,360 Watts – 14.8 kW PTO
  • Sustained Cruising Output (Hot, 6,000 RPM) at 53.5v - 138 Amps - 7,383 Watts – 10.5 kW PTO
  • Sustained Idle Output (Hot, 2,500 RPM) at 53.5v - 78 Amps 4,173 Watts – 6kW PTO
  • Max Continuous Operating Temperature - 100°C / 212°F

Mounting Application:

  • Must Be Used on Yanmar Common Rail Engines Introduced after 2013 (JH-CR, 3JH40, 4JH45, 4JH57, 4JH80, 4JH110).

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:
  1. 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
SKU: 12245074222

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Elle Cooper
Bozeman, US
★★★★★ 5
Perfect for in the field or the office.
Color: Blue Gray, Size: XX-Large
Perfect for use in the field or in the office. Great quality and the fit was perfect!!
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Reviewed in the United States on May 17, 2026
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M. Bracke
Lexington, US
★★★★★ 4
Good inexpensive shirt.
Color: Black, Size: X-Large
Nice shirt for the price. Good fit to size. Cotton/ poly blend. Does not wrinkle too bad after washing.
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Reviewed in the United States on December 8, 2025
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Robert
Alexandria, US
★★★★★ 1
Runs way too small
Color: Black, Size: Medium
If you live in the U.S. and wear medium, a large will fill you perfectly. I wear large and the “large” is objectively a medium in the chest arms and neck. Fix your sizes.
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Reviewed in the United States on February 28, 2026
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Christopher
Chelsea, US
★★★★★ 5
True fit
Color: Dark Red, Size: Medium
Shirt fits to size, comfortable. I have no regrets.
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Reviewed in the United States on May 31, 2026
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Lainy K.
Louisville, US
★★★★★ 3
Looks Sharp! Stiff, Balloon Comfort!
Color: Black, Size: XX-Large
I purchased the PJ PAUL JONES Men's Oxford Button-Down Shirt as a gift, and it comes with a mix of strengths and trade-offs. The buttons are plentiful and high quality, and the inclusion of a couple of spare buttons is a thoughtful touch. The color is a deep, rich shade just as I hoped, giving the shirt a sharp, professional appearance. The fabric has a noticeable texture that looks like cotton, but the heavier thread count gives it a sturdier, more rugged feel, (almost outdoorsy) rather than the soft, premium cotton I expected. My biggest concern is that it may feel scratchy against the skin and less comfortable for long hours of wear. The shirt is also quite boxy in shape, with little to no side curve, which limits ease of movement and can cause it to crease or untuck when bending or sitting. Overall, it’s a durable, well-constructed shirt with a polished look, but comfort and fit may be an issue if you prefer softer fabric and a more tailored, flexible cut.
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Reviewed in the United States on December 30, 2025

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