ARCO Marine Zeus A275L 3.15 Alternator w/Isolated Ground & Terminal Block - 4019

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SKU: 107504

MPN: 4019

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Truck Freight: No

⏳ Hurry! Only 4 left in stock

Regular price $1,096.70
Regular price Sale $1,249.60 Sale price $1,096.70
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Manufactures Part Number: 4019

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Truck Freight: No

Zeus A275L 3.15 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 - 110C / 230F

Mounting Application:

  • Replaces most small case styles using a 3.15 saddle style mount (e.g., Hitachi, Lucas, Mitsubishi). Most Yanmars. Requires Standard single V belt upgrading to a Serpentine System

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Most Asked Questions

Most orders ship within 1–2 business days. Delivery times depend on your location and carrier, but you’ll receive tracking as soon as your order ships.

Free shipping is available on eligible orders. Shipping options and costs are shown at checkout.

Yes. Certain large or heavy items may ship via truck freight. If truck freight applies, it will be clearly noted on the product page.

We accept returns on unused items within the specified return window. Please see our Returns Policy for full details.

Many products include manufacturer instructions. If you need help, our support team is happy to assist.