24891-ZV5-000 Block - Overview. The 24891-ZV5-000 Block is a critical component in Honda marine engine systems, specifically functioning within the throttle friction system. This block plays a vital role in ensuring smooth throttle operation by providing the necessary friction and mechanical support. Crafted to match factory specifications with exact dimensions and tolerances, it seamlessly integrates with existing hardware to maintain optimal engine performance and durability.. Key Features. Ge