604-120-K6 - Balmar 120A 12V Alternator with Isolated Ground | Aztek Computers
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SKU: Y8B7L2J1Z3 |  Mfg. Part: 604-120-K6  | UPC: 676205750615  | 
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604-120-K6 - Balmar 120A 12V Alternator with Isolated Ground

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$744.14  $1,004.59
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Product Overview

Balmar 120A 12V Alternator with Isolated Ground

This high-performance alternator is designed specifically for use in various heavy-duty engines. The Balmar 604 Series features a robust 120 AMP output at 12 volts, making it ideal for powering your electrical systems. It features a dual foot saddle mount and a durable 4-inch K6 serpentine pulley, ensuring a secure fit and reliable operation.

The isolated ground ensures minimal electrical interference, providing clean and consistent power. This alternator is compatible with engines from well-known manufacturers such as Caterpillar, Cummins, Detroit Diesel, and John Deere.

Replaces: 604-120-SR-IG

For any concerns or issues, please contact the manufacturer directly.

Expert Overview

The Balmar 120A 12V Alternator with Isolated Ground is a heavy-duty component designed for specific engine applications. This unit provides a consistent 120 AMP output at 12 volts, suitable for maintaining electrical system power in demanding environments. It features a dual foot saddle mount and a 4-inch K6 serpentine pulley, facilitating installation and reliable operation. The isolated ground design helps mitigate electrical interference, contributing to stable power delivery. This alternator is compatible with engines from manufacturers such as Caterpillar, Cummins, Detroit Diesel, and John Deere. Part number 604-120-K6 is intended for IT and operations buyers seeking a direct replacement or upgrade for compatible heavy-duty engine systems, addressing needs for stable power generation in critical machinery.

Technical Specifications

  • 120 AMP output at 12 volts
  • Dual foot saddle mount design
  • 4-inch K6 serpentine pulley
  • Isolated ground for reduced electrical interference
  • Compatible with Caterpillar, Cummins, Detroit Diesel, and John Deere engines

Product Details

  • Manufacturer:
  • Model Number:
  • UPC:
  • Condition:
  • Weight:
  • Dimensions:
  • Updated:
  • Added:
  • Country of Origin:
  • Balmar
  • 604-120-K6
  • 676205750615
  • New
  • 13.35 lbs
  • 10 X 9 X 9
  • Jul 21, 2026
  • May 01, 2026
  • United States
Product Identifiers: Brand: Balmar • Part #: 604-120-K6 • UPC: 676205750615

Frequently Asked Questions

What is the output capacity of this alternator?

This alternator provides a 120 AMP output at 12 volts, designed to support the electrical systems of heavy-duty engines.

Which engine manufacturers is this alternator compatible with?

This alternator is compatible with engines from Caterpillar, Cummins, Detroit Diesel, and John Deere.

What type of mounting and pulley does this alternator use?

It features a dual foot saddle mount design and includes a 4-inch K6 serpentine pulley for secure installation and operation.

What is the benefit of the isolated ground feature?

The isolated ground feature is designed to reduce electrical interference, which helps in providing clean and consistent power to the connected systems.

604-120-K6 - Balmar 120A 12V Alternator with Isolated Ground

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Reviews for Balmar 604-120-K6

$744.14