Quicksilver Thunderbolt 15.8 x 15P Propeller QS5002X The Thunderbolt is the most popular stainless steel propeller in Quicksilver's lineup. This 3 blade performance propeller offers large diameter blades with an optimized geometry for oustanding acceleration with top speeds across a variety of applications. From twin and triple outboard center consoles to V8 powered stern drive sport boats the Thunderbolt does it all! The Thunderbolt is for 100 - 300HP V6/V8 O/B Johnson/Evinrude; 115D, 135-250HP Honda; 90CT / 300HP outboards Mercury/Mercruiser; 150 - 300HP Suzuki; 150 - 300HP & V6/V8 4-3/4" Gearcase Yamaha; Alpha One Mercruiser I; Bravo One; Sea Drive 4-3/4: Large Gearcase , Model 800 Cobra, King Cobra OMC; Volvo Penta SX Requires a Flo-Torq II or Flo-Torq SSR hub system Use FLo-Torq SSR HD hub kit (8M0101603) when installing a Thunderbolt propeller on a Mercury FourStroke V8 & 350 - 400HP Verado Outboards. Specifications: Diameter: 15.8; Pitch: 15; Rotation: Standard (Right Hand); Number of blades: 3; Special Order ItemUnsure if this prop is right for you?Use our Propeller Finder to ensure you have the right propeller for your boat!//