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Balmar Alternator 120 AMP 12V 1-2" Single Foot Spindle Mount J10 Pulley w/Isolated Ground

Balmar Alternator 120 AMP 12V 1-2" Single Foot Spindle Mount J10 Pulley w/ Isolated Ground

SKU 621-120-J10
by Balmar
Save $91.00
$857.00
$766.00

Upgrade your engine's power with our heavy-duty 120 AMP 12V Alternator. Featuring a durable spindle mount design and isolated ground, this alternator is built to deliver reliable performance in a variety of marine and industrial applications.

  • High-Output Charging: Generates 120 amps of reliable power to keep your batteries charged and your devices running.
  • Versatile Mounting: Designed for single-foot spindle mounting, this alternator fits a wide range of engines, including Westerbeke, Lehman, Hino, and Pathfinder.
  • Isolated Ground: The Motorola-style mounting with isolated ground ensures optimal electrical performance and protection.
  • Trusted Replacement: This alternator is a direct replacement for the 621-120-SR-IG model, providing a seamless upgrade for your existing system.

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  • Alternator 120 AMP 12V 1-2" Single Foot Spindle Mount J10 Pulley with Isolated Ground

    Alternator, 621 Series, 120A, 12V, Spindle Mount (Single Foot), 1-2in, J10 AltMount Serpentine Pulley, Isolated Ground 1" Motorola-Style Mounting.

    Typical for Westerbeke, Lehman, Hino & Pathfinder Engines 2" Delco-Style Mounting; Typical for Volvo Penta (Gas & Diesel), John Deere, Perkins, Mercruiser, Pleasurecraft, Crusader, Indmar, Marine Power & other GM-based Engines.

    Replaces: 621-120-SR-IG

  • Shipping

    Most orders ship on the same business day or the next business day. Some orders ship directly from the manufacturer, and these may take an additional 1-2 days to process, depending on the manufacturer. Contact us to confirm ship times.

    We currently offer FREE 2-day shipping on all orders over $50 to the contiguous 48 states in the USA.

    Flat rate shipping of $7.95 USD for orders under $50 within the contiguous 48 states.

    Overnight shipping rates available at checkout. 

    Shipping for orders to states or US territories outside of the contiguous 48 states will be calculated at checkout.

    30-Day, No-Hassle Returns

    To return an item, send an email to info@secondreef.co. Please include your full name and order number in your email.

    Returns must be requested within 30 days of the receipt of your order. The product must be returned unopened in the original packaging. We do not accept returns of used products.

    Refunds are subject to a 5% restocking fee to cover the non-refundable credit card processing fees we incur and the administration required.

    View our full shipping and returns policies here.