SKU: 91770229636

ARCO Zeus A275L J-180 4" Alternator w/Regulator Zeus High-Energy Alternator Regulator [4024-AZ1000]

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Description

ARCO Zeus A275L J-180 4" Alternator w/Regulator Zeus High-Energy Alternator Regulator [4024-AZ1000]Zeus A275L J 180 4" Alternator with Regulator & Zeus High Energy Alternator Regulator Zeus A275L J 180 4" 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. It runs 8 20% cooler than incumbent alternators due to heat

Zeus A275L J-180 4" Alternator with Regulator & Zeus High-Energy Alternator Regulator

Zeus A275L J-180 4" 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. 
  • It runs 8 - 20% cooler than incumbent alternators due to heat-shedding coatings, a refrigerator on the 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 most Volvo Penta alternators using a 4” J180 saddle-style mount

Zeus High-Energy Alternator Regulator

ARCO’s Zeus is the only high-energy external alternator regulator to feature Bluetooth and a native app (on IOS and Android) allowing for easy installation and configuration. With its intuitive interface, you can access information on your system that you never had before. This information will enable you to regulate your system and optimize your battery charge and alternator output, resulting in a safer experience while protecting your energy system investment.

Zeus is the only alternator regulator that can read 2 shunts at a time (the battery shunt and alternator shunt). This feature enables Zeus to react to inputs from the battery current/temperature and alternator current/temperature.

Through the ARCO Zeus application, you are in good hands. Your data is automatically logged and can be shared with your technician to troubleshoot your system remotely. You can even import your remote technician’s configurations. 

Zeus optimizes battery charges for 12-48 volt systems. Whether you are using Lithium (LiFePo4) batteries or lead-acid Deep Cycle batteries, Zeus has you covered with its pre-set battery libraries and configurable menus to optimize your charging profiles. Zeus manages a complex set of inputs by giving you easy-to-understand options.

Zeus also takes into consideration the power of your engine and allows you to configure the alternator’s power take-off from the engine by managing the field, or duty. An advanced feature of Zeus is that it can turn your engine into a dedicated generator with the press of a button, whereby it focuses the alternator’s performance on the creation of energy to replenish your battery bank quickly.

Consistent with Zeus’ ease of use, Zeus is the only alternator regulator on the market that comes with alternator/battery harnesses and 2 thermistor harnesses, without an additional charge, saving users money and time from sourcing harnesses.

Features:

  • Secure Bluetooth connection
  • Harnesses, Thermistors, and NMEA 2000 kit included
  • Monitors the state of charge
  • Can turn your engine into a dedicated generator with generator mode
  • Pre-set battery libraries
  • Data logging and sharing
  • CAN bus and NMEA 2000-integrated networks
  • Compatible with all voltage systems (12- 48V)
  • IP66 & IP67 rated
  • 2-Year warranty

Technical Specifications:

  • Enclosure dimensions without antenna - 8.2" x 5.9" x 2.4" 
  • Enclosure dimensions with antenna - 8.2" x 7.5" x 2.4"
  • Weight - 1.7 lbs

In the Box:

  • Zeus high-energy alternator regulator
  • Battery wiring harness
  • Alternator wiring harness
  • 2 thermistors
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: 91770229636

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BJM
Battle Creek, US
★★★★★ 5
phenomenal
Format: Kindle
Absolutely loved it and can’t wait to read more about these people. I wish they would have just communicated but alas, life happens. Absolutely wonderful
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Reviewed in the United States on May 28, 2026
C
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Cecile D
Birmingham, US
★★★★★ 5
beautiful sapphic second chance
Format: Kindle
I could not put this book down, I devoured it in one day! A heartfelt sapphic romance that pulled you in from the start. Gemma and Caitlin’s dual POVs and dual timelines was done effortlessly. Seeing the struggles of a high school romance was so relatable. Then flash forward to the present when they were forced into each other’s lives after nine years because they were cast in the same movie! The cross between past, present, and the movie being filmed was full of angst, longing, regret, and hit me on every emotional level. I could not recommend this book more!
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Reviewed in the United States on January 22, 2026
A
Amazon Customer
West Palm Beach, US
★★★★★ 3
Missed the Mark *Spoilers*
Format: Kindle
I was surprised by the author’s bio because at times it felt like this book was written by an adolescent imagining what filming a movie would be like. I really enjoyed certain parts of the book, especially the flashbacks to HS, the flirtatious note-writing and the botched Spanish terms of endearment. But the main feeling I had reading it was whiplash, in terms of all the back-and-forth between the MCs. Even at almost 30 years old, they both felt emotionally immature. **Spoilers Ahead** It was odd to me that when they finally confronted their past, it was in terms of the summer after their sophomore year of HS, rather than the big breakup when they were in college. Skipping ahead, the Paris ending felt very abrupt and out of character. I also felt that certain side characters (Troy, Darbie, Emily, etc.) were very two-dimensional and discarded easily where it would’ve been interesting to see their reactions to the MCs’ relationship. I can see where the author laid the groundwork for a good series, it definitely has potential. This book just missed the mark for me.
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Reviewed in the United States on February 17, 2026
A
Allison Heller
Draper, US
★★★★★ 4
Fantastic Second Chance Romance
Format: Kindle
The only reason this book wasn’t a 5* was because Amazon doesn’t allow 4.5* and I felt like parts of the rekindling of their romance at the very end were slightly rushed. Aside from that, this book was INCREDIBLE. I fell in love with them as a couple from the beginning. Gemma’s back and forth emotional parkour was a little rough at spots with how quickly she changed from wanting nothing to do with Caitlin to wanting to take her home. BUT I loved the epilogue and the full circle moments of them together and their future. Can’t wait to read another book by this author!
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Reviewed in the United States on February 7, 2026
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Jacob Caldwell
Cuba, US
★★★★★ 5
Must buy
Format: Paperback
Support any lgbtq writer
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Reviewed in the United States on March 26, 2026

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