13321-ZX2-003 Main Bearing A - Overview. The 13321-ZX2-003 Main Bearing A is a vital component within Honda marine engine systems. It supports the crankshaft, enabling smooth rotation and power transfer, essential for the reliable operation of your marine engine. Precision-crafted to fit perfectly, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Genuine Honda OEM main bearing designed to support the crankshaft of marine engines.. Made to exact factory specifications ensuring precise dimensions and tolerances.. Durable construction engineered for significant load handling and optimal engine function.. Facilitates smooth mechanical motion, reducing friction and wear on engine components.. Ensures clean integration with existing hardware and seals for continuous reliable operation.. Maintains expected durability, performance, and feel consistent with original engine specifications.. Why Choose Genuine OEM. Using original