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Warehouse Clearance Arco Zeus A225s 1-2" Alternator With Terminal Block #a225s-12-sf12-ex-49k6 Tool [74p1KJZW]

$58.99 $188.99 -69%

Download Literature Watch VideoARCO A225S-12-SF12-EX-49K6 AlternatorsZeus A225S 1"-2" Alternator with Terminal BlockThe highest power output alternator in its size/class. Features:Engineered for High Energy Production.Suitable for Marine, RV, Milita

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ARCO A225S-12-SF12-EX-49K6 Alternators

Zeus A225S 1"-2" 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

Mounting Application:

  • Replaces most domestic styles using a single 1or 2” mounting foot (e.g., Motorola, Prestolite).

Normalized SKU: A225S12SF12EX49K6
UPC Code: 695845518768

ARCO A225S-12-SF12-EX-49K6 Literature Download

Quick Reference Guide
Product Brochure

ARCO A225S-12-SF12-EX-49K6 Video

What Our Customers Say

December 29, 2025

Absolutely no complaints!

A great item for my needs.

- Ida G..

December 29, 2025

Absolutely no complaints!

Works as advertised, maybe better.

- Orlando S..

December 29, 2025

Absolutely no complaints!

Great item! Highly recommended.

- Frank Z..

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