1Strong Compatibility: Port mount trim tilt sender is replacement for Mariner Optimax Jp 3.0L Dfi ? Jp 3.0L Dfi 200/225 Dfi 3.0L ? 225 Dfi, etc. 2OE Number: Port trim tilt sender replace part number is 859187A1. Please make sure the OE number matches the part you are replacing. 3Improved Efficiency: By adjusting the port alignment, the sensor sending unit enhances the overall efficiency of the system, leading to better productivity and cost savings. 4Durable Construction: High strength Abs construction for maximum durability, high reliability, long lasting and stable performance. 5Easy Installation: The sending unit is designed for easy installation and configuration, professional manufacturing, convenient for using.