Mercury Outboard 40 50 65 HP 3 Cyl Lower Unit Gear Case 1643-6458

Please check your application before ordering.

This part is sold as-is with no warranty with a 30-day return policy (buyer pays return shipping).

This unit failed the pressure test because it needs a new prop shaft seal (you will need to replace this before use).  

The driveshaft is 22 1/4" (from top of gear housing to tip of detent pin) and has 11 splines.

The water pump was not inspected - we suggest installing a new impeller prior to use.

You will need to fill with fresh gear oil prior to use - this unit is shipped empty.

We only sell Freshwater outboard parts

Shipping to the USA only (International customers may use the eBay Global Shipping Program)