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Easy To Use Balmar Alternator 120 Amp 12v 1-2" Single Foot Spindle Mount J10 Pulley W/isolated Ground [621-120-j10] Bundle [BYb3Gvm4]

$63.99 $204.99 -69%

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

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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

This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.
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What Our Customers Say

January 5, 2026

Absolutely no complaints!

I am impressed. And it works so very, very well.

- Dilys E..

January 5, 2026

Absolutely no complaints!

An absolute workhorse, incredibly consistent.

- Willa C..

January 5, 2026

Absolutely no complaints!

This is a very good and a very, very clever tool.

- Madog X..

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