90703-PNA-300 Pin (4.2X10.3) - Overview. The 90703-PNA-300 Pin (4.2X10.3) is a precise and durable part integral to Honda marine engine systems. This pin operates primarily in mechanical assemblies such as camshaft, chain, and cam positioning systems within the Honda Active Marine engine context. Its role is critical for ensuring precise mechanical alignment and secure mounting of key engine components. Designed to exact factory specifications and tolerances, it ensures seamless integration with