Flywheel Puller Removal Tool 91-849154T1, Lift Ring 91-90455-1 Replacement for Mercury Mariner Outboard Lift Replaces: Flywheel puller with crank shaft protector 91-849154T1, Lifting Ring 91-90455-1. Function: A necessary tool for replacing outboard motors on boats and lifting the engine from the transom. Fitment: Designed for most 45HP Mercury, Mariner, Force, and Yamaha outboard motors featuring 1 1/2"-16 TPI threads, for units manufactured from the 1960s to the present. Size: Verify the thread diameter: 1 1/2"-16 TPI (Threads Per Inch) tool threads, 5/8"-18 TPI bolt and lift ring threads. Package Contains: 1 x Flywheel Puller Removal Tool with Crank Shaft Protector, 1 x Lifting Ring ???? Confirming compatibility with the seller can reduce unnecessary after-sales issues. ????