621-100-J10 - Balmar 100 AMP 12V Alternator with Isolated Ground | Aztek Computers
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SKU: E7QD5E54NX |  Mfg. Part: 621-100-J10  | UPC: 676205500685  | 
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621-100-J10 - Balmar 100 AMP 12V Alternator with Isolated Ground and Spindle Mount

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$684.14  $923.59
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Product Overview

100 AMP 12V Alternator with Isolated Ground and Spindle Mount

This 621 Series Alternator delivers reliable performance with a capacity of 100A and operates at 12V. Designed for spindle mounting (single foot), it features a J10 AltMount Serpentine Pulley and isolated ground. It's compatible with various marine engines including Westerbeke, Lehman, Hino, Pathfinder, and many GM-based engines.

Replaces: 621-100-SR-IG

Please note: This product may not be returned to the original point of purchase. For any issues or concerns, please contact the manufacturer directly.

Expert Overview

The Balmar 621-100-J10 is a 100 AMP 12V Permanent Magnetic Alternator designed for marine applications. This unit provides a 100A output at 12V and features an isolated ground, which can be beneficial in preventing stray current corrosion in marine electrical systems. It utilizes a spindle mount (single foot) design for installation and includes a J10 AltMount Serpentine Pulley. This alternator is suitable for a range of marine engines, including models from Westerbeke, Lehman, Hino, Pathfinder, and various GM-based engines. It serves as a replacement for part number 621-100-SR-IG. This product is intended for IT and procurement professionals seeking a specific alternator for compatible marine engine systems, offering a direct replacement or new installation component.

Technical Specifications

  • 100A output at 12V for optimal power
  • Spindle mount design (single foot) for easy installation
  • J10 AltMount Serpentine Pulley included
  • Isolated ground for improved performance
  • Suitable for various marine engine brands
  • Replaces part number 621-100-SR-IG

Product Details

  • Manufacturer:
  • Model Number:
  • ASIN:
  • UPC:
  • Condition:
  • Weight:
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  • Updated:
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  • Country of Origin:
  • Balmar
  • 621-100-J10
  • B0B5ZYMHC9
  • 676205500685
  • New
  • 7.2 lbs
  • 10 X 9 X 10
  • Jul 21, 2026
  • Jan 31, 2023
  • UNITED STATES
Product Identifiers: Brand: Balmar • Part #: 621-100-J10 • UPC: 676205500685 • ASIN: B0B5ZYMHC9

Frequently Asked Questions

What is the output capacity of this alternator?

This alternator provides a 100A output and operates at 12V, designed to deliver optimal power for compatible systems.

What type of mounting does this alternator use?

It features a spindle mount design, also referred to as a single foot mount, which facilitates installation on compatible engine configurations.

Which marine engines are compatible with this alternator?

This alternator is compatible with various marine engine brands, including Westerbeke, Lehman, Hino, Pathfinder, and many GM-based engines.

Does this alternator include a pulley?

Yes, the alternator comes with a J10 AltMount Serpentine Pulley included, ready for installation.

621-100-J10 - Balmar 100 AMP 12V Alternator with Isolated Ground and Spindle Mount

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Reviews for Balmar 621-100-J10

$684.14