16404-ZVT-000 Spacer - Overview. The 16404-ZVT-000 Spacer is an essential component within Honda marine engine systems, designed to provide precise clearance and alignment between throttle body components. Serving a critical role in the fuel system assembly, this spacer supports reliable engine operation by maintaining optimal spacing that ensures seamless integration with existing parts, preserving peak performance and longevity.. Key Features. OEM genuine Honda part, guaranteeing exact match to factory specifications.. Precisely engineered spacer component for throttle body applications.. Designed to maintain specified clearance, preventing wear and vibration.. Manufactured to meet strict Honda dimensions and tolerances.. Seamlessly integrates with throttle body assembly and related hardware.. Helps preserve the overall durability and performance expected from Honda marine engines.. Why Choose Genuine OEM. Using original Honda parts like the 16404-ZVT-000 Spacer preserves the integri