SKU: 56960626073

ARCO Marine Zeus A275L J-180 4" Alternator w/Terminal Block [4022]

Sale price$444.02 Regular price$493.35
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Ships within 48 hours · Estimated delivery Aug 18 - Aug 23

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Description

ARCO Marine Zeus A275L J-180 4" Alternator w/Terminal Block [4022]Zeus A275L J 180 4" 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. It runs 8 20% cooler than incumbent alternators due to heat shedding coatings, a refrigerator on the housing exterior, dual cooling fans, and

Zeus A275L J-180 4" 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.
  • 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 - 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 Volvo Penta alternators using a 4” J180 saddle-style mount

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:
  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: 56960626073

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Syrinx
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★★★★★ 4
Great watch for any Nursing and Vet Tech!!
I have it 4 stars because you can't always feel when to stop winding and so it will stop when it runs out. You do not always know when that'll be. I now wind it every 12 hours. The watch itself is cool as hell. The band is easily adjusted. There are multiple clasps to keep it attached. I love being able to see all the mechanics inside. I love that you can wash your hands without taking it off!!
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Reviewed in the United States on August 9, 2025
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Maxine GOODYEAR
Draper, US
★★★★★ 5
This watch keeps good time and No battery.
Color: Black Rose Gold
A very interesting watch. Get lots of complements and the best thing is it works. No battery!
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Reviewed in the United States on September 18, 2025
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silkythreads
Waukegan, US
★★★★★ 1
Keep correct time !
Horrible ! Will not keep correct time......it's ticking but not a correct speed. I was late to 2 different meetings because it was running slow. Not a good buy.
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Reviewed in the United States on December 19, 2025
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Avian sengstock
Draper, US
★★★★★ 5
Best luxury watch at a affordable price
Color: All Gold
Love my new OUPINKE watch! This is my third one and this is my favorite luxury brand at a reasonable price
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Reviewed in the United States on February 12, 2026
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Reynaldo
Phoenix, US
★★★★★ 5
Extremely satisfied
Color: Black strap & black dial
Excellent time piece 👌 It works great while looking good on your wrist.
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Reviewed in the United States on February 27, 2026

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