The Seachoice 16" (400mm) Fuel Sending Reed Switch is a premium, solid-state solution designed to deliver highly accurate and reliable fuel level readings in deep marine tanks. Engineered with advanced reed switch and magnetic field technology, this sender features a single moving float and no mechanical components to wear out, virtually eliminating the gauge fluctuations and premature wear common in traditional swing-arm sending units. Built to withstand harsh marine environments, it is constructed with a rugged stainless steel immersion tube and a corrosion-resistant plated mounting flange featuring a standard SAE 5-hole pattern. Calibrated to the standard marine resistance range of 33 ohms (full) and 240 ohms (empty), this 16-inch sender comes complete with a custom leak-proof gasket and insulated spade connectors, ensuring consistent, worry-free performance on the water.