Mercury Part Number
1643-6459A4

Related Part Number
7406A30->9539A2
7406A17->7406A30
6459A4->7406A17

This sale is for one brand new old stock short shaft Mercury Outboard lower unt.

This Mercury gear case is brand new in the box.  This is an original factory Mercury part, not aftermarket.

The drive shaft measures approx 18" from the tip to the base of the water pump and 18 1/2" to preload pin.

The driveshaft has 11 splines and the prop shaft has 13 splines.

This lower unit fits some Mercury outboards from 1977-1979 with 70 hp.  It may fit more than this so please check your part numbers,



Feel Free To Ask Questions.

We offer the most used Stern Drive & Outboard parts in Wisconsin!

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