Yamaha 6FN-45300-03-NA - Lower unit assembly

The Yamaha Lower Unit Assembly 6FN-45300-03-NA is engineered to restore dependable performance and smooth operation to your Yamaha outboard. Designed for a precise OEM fit, this complete lower unit installs cleanly and operates exactly as intended, helping maintain proper power transfer and overall drivetrain efficiency.

Built from durable, marine-grade materials, this lower unit is made to handle corrosive saltwater environments and demanding operating conditions. Its robust construction supports consistent thrust, reduced vibration, and reliable performance whether you’re cruising, fishing, or running at speed.

Backed by Yamaha’s reputation for quality and precision engineering, this lower unit assembly is a solid choice for keeping your outboard running smoothly and confidently on the water.

WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.