41131-ZVA-000 Pinion Gear - Overview. The 41131-ZVA-000 Pinion Gear is a precision-engineered component essential to Honda marine engine systems. It plays a critical role in the transmission system by transferring rotational force from the engine to the propeller shaft, ensuring reliable propulsion for your boat. Designed to meet strict OEM standards, this pinion gear fits seamlessly within the gear case, maintaining optimal performance and durability for Honda outboard motors built to factory s