SEI MARINE PRODUCTS- Yamaha Impeller 63V-44352-01 9.9 15 HP 2 Stroke 4 Stroke Outboard Lower Units This impeller replaces OE#: 63V-44352-01 and fits 9.9 HP 2 stroke (1996-current), T9.9 HP (2005-current), 9.9 HP 4 stroke (2005), 15 HP 2 stroke (1996-current), and 15 HP 4 stroke (1998-current) Yamaha outboard lower units.