Balmar 621-120-J10 Alternator 120 AMP 12V 1-2" Single Ft Spindle Mount J10, Pulley w/Isolated Ground GROUP+ambassador-marine-large-marine-sprayer-no-hook A simple press of a

A simple press of a button allows you to drop down to the next minute

The dual action pump is 66% larger in diameter than any competitive market

The J-groove ensures a solid hold on your trailer while still allowing for easy removal of the trailer ball without tools or pins

and High CHIRP frequency ranges

Thread: 3/4" pipe

Balmar 621-120-J10 Alternator 120 AMP 12V 1-2" Single Ft Spindle Mount J10, Pulley w/Isolated Ground GROUP+ambassador-marine-large-marine-sprayer-no-hook A simple press of aAlternator 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