ARCO Marine Zeus A275L J180 4" Alternator w/Isolated Ground  Regulator [4025]
SKU: 85410726076

ARCO Marine Zeus A275L J180 4" Alternator w/Isolated Ground Regulator [4025]

Sale price$518.26 Regular price$575.85
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Ships within 48 hours · Estimated delivery Jul 6 - Jul 11

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Description

ARCO Marine Zeus A275L J180 4" Alternator w/Isolated Ground Regulator [4025]Zeus A275L J180 4" Alternator with Isolated Ground & 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. Heat shedding coatings Rectifier located on housing exterior Dual cooling fans OEM components Optimized for performance at idle

Zeus A275L J180 4" Alternator with Isolated Ground & 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.
  • 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 are available with an 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 Application:

  • 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:
  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: 85410726076

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A
Verified Purchase
Amazon Customer
Battle Creek, US
★★★★★ 5
Worked good for getting through tires with metal
Did the job
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 18, 2024
J
John P
Lexington, US
★★★★★ 5
Great tool for tire plugs
I have been using tire plugs with great success for decades. I have probably installed close to 50 plugs. The hardest part can be reaming the hole to the proper size to get a plug installed. I have wanted something like this for years. These are well made, and while I have not had to use them yet, I have no doubts they will work great the next time I find a screw or nail in a tire. Recommended.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 14, 2023
B
Britney Raver
Grantham, US
★★★★★ 5
Good drill bits
Nice drill bits, work as they should and good quality. No reason to not recommend!
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Reviewed in the United States on December 16, 2023
D
Verified Purchase
Dave Anderson
Houston, US
★★★★★ 5
Excellent Product !
Size: 2.67 Ounce (Pack of 12)
I've used this product for years and never had a complaint. Works perfectly.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 7, 2026
W
Verified Purchase
William B.
Lake Worth, US
★★★★★ 5
Works great
Size: 2.67 Ounce (Pack of 12)
Works great. I have many years experience in tire repairs and this product works as good as any commercial brand I've ever used
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 4, 2025

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