38555-ZW9-W51 Power Tilt Relay - Overview. The 38555-ZW9-W51 Power Tilt Relay is a vital component of Honda marine engine systems, specifically designed to support the power tilt and trim system. This relay controls the electrical current that facilitates smooth power tilt operation, ensuring reliable and efficient motor function on watercraft. Engineered for durability and performance, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Feat