13324-PNA-003 Main (Upper) Brg D - Overview. The 13324-PNA-003 Main (Upper) Brg D is a vital component within Honda marine engine systems. This main upper bearing supports the crankshaft's rotation, ensuring smooth mechanical motion and overall engine reliability. Manufactured to the highest OEM standards, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Precise OEM main upper bearing designed specifically for Honda marine engines.. Supports the crankshaft, contributing to smooth engine operation and longevity.. Made with high-grade materials meeting factory specifications, tolerances, and dimensions.. Designed for an exact fit to work flawlessly with existing engine hardware and seals.. Provides durability required to withstand the rigors of marine engine use over time.. Color-coded (green) bearing from trusted manufacturer Daido, ensuring reliable performance.. Why Choose Genuine OEM. Using original Honda parts like t