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SKU: GT6R905QE9 |  Mfg. Part: A275L-12-SF12-EX-49K6  | UPC: 695845908453  | 
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Arco Marine A275L-12-SF12-EX-49K6 Zeus A275L 1"-2" Single Foot Alternator w/Terminal Block

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Condition: New

$906.01  $1,223.11
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Product Overview

Zeus A275L 1"-2" Marine Single Foot Alternator

The Zeus A275L is the pinnacle of power output in its size class. Engineered for high energy production, this alternator is suitable for various applications, including marine, RV, military, and commercial settings.

Key Features:

  • Rapidly charges large battery banks.
  • Maintains optimal performance with cooler operating temperatures, running 8-20% cooler than other alternators due to advanced engineering.
  • Includes heat shedding coatings, an exterior rectifier, dual cooling fans, and OEM components for superior efficiency.
  • Optimized for high performance at idle speeds to minimize generator dependency by generating additional power with your engine.
  • Utilizes E-Coat/Cerakote finishes that absorb less heat for maximized amperage over longer periods.
  • Compatible with ARCO Zeus Bluetooth alternator regulator for enhanced performance and lithium battery charging.
  • SAE J1171 certified for safety and reliability.
  • Manufactured 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
  • Output Voltage: 14.1v (Default)
  • Finish: Cerakote or E-coating (Black)
  • Cut-In RPM: 1,061 Alternator RPM
  • Max 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

Product Details

  • Manufacturer:
  • Model Number:
  • UPC:
  • Condition:
  • Weight:
  • Dimensions:
  • Updated:
  • Added:
  • ARCO Marine
  • A275L-12-SF12-EX-49K6
  • 695845908453
  • New
  • 16.55 lbs
  • 11 X 10 X 10
  • Mar 21, 2026
  • Jul 22, 2024
Product Identifiers: Brand: Arco Marine • Part #: A275L-12-SF12-EX-49K6 • UPC: 695845908453 • Category: Mixed Lot

Arco Marine A275L-12-SF12-EX-49K6 Zeus A275L 1"-2" Single Foot Alternator w/Terminal Block

Reviews for Arco Marine A275L-12-SF12-EX-49K6

$906.01