37831-ZVL-000 Map Sensor Stay - Overview. The 37831-ZVL-000 Map Sensor Stay is a crucial mounting bracket designed expressly for Honda marine engine systems. It supports the Manifold Absolute Pressure (MAP) sensor, ensuring it remains securely positioned for accurate air pressure measurement, which is vital for engine performance and reliability. By providing proper mounting and protection, this component helps maintain the integrity of the MAP sensor system and contributes to seamless engine op