37830-PGK-A01 Map Sensor Assembly - Overview. The 37830-PGK-A01 Map Sensor Assembly is an essential part of Honda marine engine systems, designed to measure manifold absolute pressure for optimal engine performance. This sensor supports the engine control system by helping to regulate fuel delivery and ignition timing, ensuring reliable operation and efficiency. Crafted to precise factory specifications, this component ensures seamless integration with existing parts, maintaining optimal perform