58134-ZY3-021B 4 X 14 X 21 AL (L) - Overview. The 58134-ZY3-021B 4 X 14 X 21 AL (L) is a genuine OEM aluminum left-hand propeller designed for Honda marine engine systems. This essential counter-rotating component plays a vital role in converting engine power into thrust, providing efficient propulsion for your boat. Engineered with precision to match factory specifications, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Origin