SEI MARINE PRODUCTS- Yamaha Impeller Kit 115 130 150 175 200 225 250 HP 2 Stroke 1984+ This impeller kit fits V4 standard rotation from 1984-current, V6 standard rotation 3.1/3.2L (200-250 HP) from 1990-2006, and V6 counter rotation 3.1/3.2L (200-250 HP) from 2004-current Yamaha outboard lower units.