Since the boat is primarily used for crusing about 25mph, I wanted to try using a 4 blade prop which I hoped would get me on plane at a lower RPM thereby reducing wear and tear on the engine as well as giving me better gas mileage at the same time Bootspropeller Mercruiser OEM 14 1/2x 17 Boat Propeller For Mercury/Mercruiser Engines Schiffspropeller 15 Zahn Rechtsdrehend Country/Region of Manufacture: China, Propeller Rotation: Standard Popularität - OEM 14 1/2x 17 Boat Propeller for Mercury/Mercruiser Engines 135-300HP, 15Tooth 1 beobachter, 0.1 neue Beobachter pro Tag, 15 days for sale on eBay Neu, Brand: Unbranded, Warranty: 60 Day