SEI MARINE PRODUCTS- Evinrude Johnson Impeller Kit 40 48 50 55 60 70 75 HP 2 Stroke 1975-1988 This impeller kit comes with a plastic wedge key and fits Evinrude Johnson outboard lower units with the following applications: 40 HP 2 Stroke (1984-1988), 48 HP 2 Stroke (1987-1988), 50 HP 2 Stroke (1975, 1978-1988) Small Housing, 55 HP 2 Stroke (1976-1981), 60 HP 2 Stroke (1980-1987) Small Housing, 70 HP 2 Stroke (1977-1985) Small Housing, and 75 HP 2 Stroke (1975-1987) Small Housing.