Mercury Quicksilver Marine Mariner Mercruiser Water Pump Impeller Key. Fits all Mercury 2-stroke v6 outboards including 135, 150, 200, 225, 245, 260, 280, and 300 HP (2.0, 2.4, 2.5, 3.0, and 3.2 Liters) including Sportmaster, CLE, Super Speedmaster SSM #4, Speedmaster SSM #6, Sterndrivers, MCM I, R, MR, Alpha One, and Bravo.
 
Part Numbers
28-56654, 8M0032834