Polyform A-4 Buoy 20.5" Diameter - White [A-4 WHITE] Engine Parts & Service | Fuel Treatments The galvanic isolator consists internally

The galvanic isolator consists internally of two diodes which are connected in an anti-parallel fashion

Start to assist input option to ensure maximum cranking amps are available by allowing manually connecting batteries via a remote switch

Factory P/N GP9373

choose from a range of base options

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Polyform A-4 Buoy 20.5" Diameter - White [A-4 WHITE] Engine Parts & Service | Fuel Treatments The galvanic isolator consists internallyA 4 Buoy 20. 5" Diameter White The A Series is the product that launched the Polyform story. This all purpose product, with the signature "blue ropehold" has proven itself in the most adverse conditions. Marking gear used in heavy seas is no easy task. That's why more fishermen use Polyform A Series than all other buoys combined. You name it, ocean, sea, or river, and the A Series has been there. Put your trust in Polyform's most versatile and well