YAMAHA TAIL 66K-45300-12

Function and technical context

The Yamaha 66K-45300-12 drive is the aquatic propulsion unit that integrates the transmission and steering system in 250 horsepower V6 outboard engines. This piece houses the impeller, gearbox and steering mechanism, acting as the critical connection point between the engine and the water. Its correct operation is essential to guarantee the efficient transmission of power from the engine to the propeller, as well as to maintain the maneuverability and control of the boat in all types of navigation conditions.

When to replace this part?

Symptoms of tail wear include loss of traction power, abnormal noises in the transmission, difficulty in steering or water entering the gearbox. It is recommended that the tail be inspected at least once per boating season and after any impact or grounding, as internal damage may not be immediately evident. Preventative replacement before peak season avoids unforeseen breakdowns at sea and costly emergency repairs.

Equivalent manufacturer part numbers