MasterGuard 500 Series Installation Kit for Engines with 4.25" or 4.75" Gearcases; Saves a boater up to 33% on replacement propeller purchases (need to purchase prop housing only).; One piece design: durable marine Bronze with Over Molded Glass Filled Nylon for Long Life.; Re-useable after a Prop Strike.; (consumer normal use only, not applicable on commercial applications); Enhanced lower unit protection.; Each kit contains a hub, thrust washer, and other hardware for installing Turning Point Express Mach3, Mach3 OS, Mach4, and Hustler propeller housings on most engines with 4.25" or 4.75" gearcase.; Also used as a hub upgrade to fit Solas Rubex, Michigan Wheel XHS, and Mercury FloTorq propeller housings.; Installation Kits for Evinrude, Honda, Johnson, Mariner, Mercury, MerCruiser, Nissan, OMC, Parsun, Suzuki, Tohatsu, & Yamaha Outboards and Sterndrives.; See application chart for engine application information. Boaters save up to 33% when buying a replacement propeller housing. These hubs offer enhancedlower unit protection.Turning Point’s MasterGuard Hubs are engineered to withstand typical wear and tear over time without risk of spinning or failure under normal operational use. Turning Point’s unique patented one piece hub with glass filled nylon over durable marine bronze splines eliminates failures commonly seen in multi-part "sleeve and spline" designs, and pressed-in rubber hub systems.Eliminate Hub System Vibration and Chatter: Innovative one piece design reduces the number of parts and eliminates failures commonly seen in multi-part hub systems.Eliminate Hub Cracking and Failure: The glass reinforced high-tech polymer construction increases flexibility, eliminating potentia
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