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ARCO Marine

ARCO Marine Zeus A225S Vortec Alternator w/Terminal Block

Out of StockNewSKU: 4017
$743.33$874.50per unit
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Special order from ARCO Marine — Estimated 2–4 weeks.

Description

Zeus A225S Vortec 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. Runs 8 - 20% cooler than incumbent alternators due to:
  • 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. Our advanced coating absorbs less heat, keeping the A225S cooler. This translates to more amperage for sustained periods.
  • For maximum performance or lithium battery charging, use an ARCO Zeus Bluetooth alternator regulator.
  • SAE J1171 Certified.
  • Proudly made in the U.S.A.

Technical Specifications:

  • Voltage - 12v
  • Field Type - P
  • Rotor Poles - 16
  • Stator Size - 130mm
  • Frame Size - Small
  • Weight - 12lbs/6.7kg
  • Regulation - External Only
  • 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) - 254 Amps
  • Sustained Cruising Output (Hot, 6,000 RPM) - 187 Amps
  • Sustained Idle Output (Hot, 3,000 RPM) - 157 Amps</

Accessories (2)

ARCO Marine 1000A/50mV Shunt

SKU: ST1000

ARCO Marine 1000A/50mV Shunt

$74.76

ARCO Marine 500A/50mV Shunt

SKU: ST500

ARCO Marine 500A/50mV Shunt

$31.91

Specifications

SKU4017
UPC—
BrandARCO Marine
CategoryElectrical
Country of Origin—
Weight—
Dimensions—
StatusActive
Last Synced10/26/2026, 1:07:12 AM

Compliance & Shipping

Returnable

Product Literature

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Price$743.33$1019.15$93.75$282.63$36.63
BrandARCO MarineARCO MarineBalmarARCO MarineBalmar
ConditionNewNewNewNewNew
AvailabilityOut of StockIn StockIn StockIn StockIn Stock
Weight—160.181.4
Dimensions—10 x 10 x 1010 x 4 x 09 x 8 x 813 x 5 x 4
SKU401740471APM-2420851UAA
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$743.33