Guest 2401 Battery Isolator 70 Amp Negative Ground Marine Charge Isolator - Used

Guest 2401 Battery Isolator — 70 Amp Max Alternator, Negative Ground

Application: Marine diode-type battery isolator used to charge two battery banks from a single alternator rated up to 70 amps on negative-ground 12V systems. Model number is read directly from the intact factory data label. Specific vessel or engine application is not verified — this is a universal-mount electrical accessory.

Condition: Used, untested take-off. Complete unit with finned aluminum heat sink, three stud terminals, nuts, and mounting feet. Light shop dust, minor scuffing of the fins, and light surface oxidation on the stud plating. Data label intact and fully legible. No electrical testing has been performed and no operational claim is made. Mounting screws and wiring not included.

Buyer must confirm fitment by part number, photos, dimensions, engine model, serial number, and application before purchase.

Used marine part sold as-is unless otherwise stated. No returns on electrical, used, special-order, or installed parts.

Quote is subject to final fitment confirmation by engine/transmission serial number, part number, photos, and supplier availability.