13214-Pmm-A01 Conn Rod Bearing D - Overview. The 13214-PMM-A01 Conn Rod Bearing D is a critical component of Honda marine engine systems. It supports the engine's connecting rod assembly by providing a smooth bearing surface for the rod to rotate on the crankshaft. This ensures efficient mechanical motion and reduces wear, helping the engine to operate reliably and smoothly. Designed specifically for Honda's marine applications, it ensures seamless integration with existing parts, maintaining op