1-1/4" Strut Bearing (SEF)Restore smooth, quiet driveline performance with this 1 1 4" SEF strut bearing for Malibu Boats underwater gear. Designed as a precision sleeve bearing for the strut, it supports the propeller shaft and helps reduce vibration and wear for dependable on water operation. Inner Diameter (ID): 1 1 4" Outer Diameter (OD): 1 1 2" Length: 2. 5" Type: SEF strut bearing cutless style sleeve bearing Fitment reference: For Malibu underwater gear strut part PN