835257K9 (835257K9) supersedes to 8M0150151 <-- please retry search with this number - Mercury Marine 835257K9 Flo-Torq III Hub Kit. Complete, 5-piece Flo-Torq III hub kit. Kit includes thrust washer, Delrin drive sleeve, bushing, splined adapter, tab washer and prop nut. Flo-Torq III hub kit cushions and protects the drivetrain from propeller impacts on submerged objects. Makes changing propellers for different pitch, material and application easy and more economical. Do not operate your engine or drive without all propeller hardware in place and secure. Flo-Torq III hub kit 835257K9 is for 40 hp through 115 hp 4-stroke Bigfoot and Command Thrust Mercury and Mariner outboards, and Optimax Outboards.See your owner's manual for installation instructions, the Flo-Torq hub, thrust washers and prop nut part numbers to best fit your engine or drive. Mercury Marine’s passion for performance is matched by your drive for the new, the unknown. Our legendary reliability and durability let you boldly embrace your next adventure—large or small—knowing you’re backed by the best quality design, engineering, and materials.