Sierra's 18-2097 U-Joint Cross and Bearing features Permalube. It is designed for use in Mercruiser Alpha Gen II (s/n 0F680000 & Up) stern drives. It is interchangeable with Mallory 9-72406, GLM 28040, and Mercruiser Stern Drive 8055361, 805536A1, and 805536A2. Check manufacturer recommendations to ensure a proper fit before purchasing. Each Sierra product meets or exceeds the original equipment part it replaces.