ARCO Marine Premium Replacement Ignition Sensor f/Mercruiser Outboard Engines

The ARCO Marine Premium Replacement Ignition Sensor for Mercruiser Outboard Engines is an essential component for any boater relying on reliable engine performance. Over years on the water, you learn that ignition sensors are the backbone of consistent starts and smooth operation—they detect crankshaft position and trigger fuel injection and spark timing with precision. When your original sensor begins to fail, you may notice hard starts, rough idle, or intermittent stalling that can leave you stranded far from the dock.

This OEM-quality replacement restores the confidence and dependability you need when you're out on the water. ARCO Marine sensors are engineered to match factory specifications and deliver the same voltage output and magnetic field detection as the original equipment. The sensor reads engine rotation in real time, sending signals to the engine control module (ECM) to maintain precise timing under varying load and temperature conditions.

Mercruiser outboard owners—whether running inboard-outboard (I/O) or pure outboard configurations—will appreciate the plug-and-play installation. Built with corrosion-resistant materials and sealed connectors, this sensor withstands saltwater spray, fuel vapor exposure, and constant thermal cycling that destroy lesser components.