MerCruiser sterndrive installation hardware kit 859116K01 is for use on MerCruiser MC-1, R, MR, Alpha and Bravo series drives to attach the bell housing. The 12-piece kit includes 6 each of the stainless steel nuts and washers.
Kit includes 6 stainless steel nyloc nuts and 6 stainless steel washers for attaching the bell housing of MerCruiser sterndrives
Do not use nyloc nuts twice; wear reduces their ability to secure the nut to the attaching bolt and may allow them to become loose