{"product_id":"niulpfztk-flo-torq-ii-hub-kit-for-mercruiser-alpha-bravo-mercury-outboards-15-spline-replacement-complete-835257q1-kit","title":"NIULPFZTK Flo-Torq II Hub Kit for Mercruiser Alpha\/Bravo \u0026 Mercury Outboards — 15-Spline Replacement, Complete 835257Q1 Kit","description":"\u003cstrong\u003eNIULPFZTK 835257Q1 Flo-Torq II Hub Kit is a direct replacement hub assembly designed to fit 15-spline Flo-Torq II propellers for Mercruiser Alpha One\/Bravo One and Mercury\/Mariner outboards.\u003c\/strong\u003e\n\n\u003cp\u003eThis hub kit supplies the core components needed to reinstall a Flo-Torq II propeller: forward thrust washer, drive sleeve, aft adapter, tab washer, and propeller nut. It is listed as a compatible replacement for OEM numbers 835257Q1 and 835257K1 and is intended for use with Mercury-compatible interchangeable propellers sized for 13 1\/4x17 and 14 1\/2x19 configurations. The parts are manufactured to withstand marine environments and allow a straightforward swap when restoring or upgrading a Flo-Torq II system.\u003c\/p\u003e\n\n\u003ch3\u003eHow do I install the NIULPFZTK Flo-Torq II Hub Kit?\u003c\/h3\u003e\n\u003cp\u003eInstallation follows a logical sequence that most mechanically inclined boat owners can complete with basic hand tools. Remove the existing locknut, locknut retainer, and forward thrust washer first, then assemble components in order and torque the locknut securely.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRemove prop locknut, retainer, and forward thrust washer.\u003c\/li\u003e\n  \u003cli\u003eInstall the new forward thrust washer and insert the drive sleeve into the propeller hub.\u003c\/li\u003e\n  \u003cli\u003eSlide the prop onto the shaft, add the drive sleeve adapter, then the locknut retainer and prop nut.\u003c\/li\u003e\n  \u003cli\u003ePrevent shaft rotation, tighten to recommended torque, and apply marine grease to the spindle before final reassembly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich engines and propellers does this hub kit fit?\u003c\/h3\u003e\n\u003cp\u003eThis hub kit is compatible with Flo-Torq II style propellers that accept a 15-spline drive sleeve and is used on a wide range of Mercruiser and Mercury\/Mariner sterndrive and outboard applications. Confirm fit by matching OEM part numbers or spline count before purchasing.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDirect replacement for OEM 835257Q1 and 835257K1 parts.\u003c\/li\u003e\n  \u003cli\u003eFits Mercruiser Alpha One and Bravo One sterndrives.\u003c\/li\u003e\n  \u003cli\u003eWorks with Mercury\/Mariner outboards in the approximate 60–400 HP range when using Flo-Torq II props.\u003c\/li\u003e\n  \u003cli\u003eSuitable for compatible prop sizes such as 13 1\/4x17 and 14 1\/2x19 where Flo-Torq II hubs are used.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the kit contents and material benefits?\u003c\/h3\u003e\n\u003cp\u003eThe package contains the essential pieces to recreate a functional Flo-Torq II prop connection, each part designed for marine use and resistance to wear. Using a complete kit reduces the chance of mismatched parts and simplifies repairs.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIncludes forward thrust washer, drive sleeve, aft adapter, tab washer, and propeller nut.\u003c\/li\u003e\n  \u003cli\u003eComponents are built for corrosion resistance and long-term durability in salt or freshwater.\u003c\/li\u003e\n  \u003cli\u003eDesigned to protect propeller and drivetrain components from impacts and fatigue.\u003c\/li\u003e\n  \u003cli\u003eDirect OEM-fit design reduces installation complexity and downtime.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I maintain the hub after installation?\u003c\/h3\u003e\n\u003cp\u003eRoutine inspection and lubrication are the simplest ways to extend hub life and help prevent corrosion or seizure. Check torque and component condition after the first outings, and re-grease the spindle when the prop is serviced.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eApply marine-grade grease to the spindle during reassembly and periodically thereafter.\u003c\/li\u003e\n  \u003cli\u003eInspect the drive sleeve and thrust washer for wear or impact damage each season.\u003c\/li\u003e\n  \u003cli\u003eVerify locknut torque after the initial run and whenever you notice vibration or performance change.\u003c\/li\u003e\n  \u003cli\u003eReplace the full kit if parts show scoring, cracking, or deformation rather than mixing old with new parts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Boat owners, mechanics, and marina technicians who need a reliable, OEM-compatible replacement Flo-Torq II hub kit for Mercruiser Alpha One\/Bravo One sterndrives or Mercury\/Mariner outboards. It’s aimed at anyone restoring a Flo-Torq II prop installation, performing routine prop maintenance, or swapping between interchangeable propellers that use a 15-spline drive sleeve. If you match the OEM numbers or spline count and want a complete set of hub components for a straightforward installation, this kit meets those needs.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this kit replace OEM 835257Q1?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. This NIULPFZTK kit is supplied as a direct replacement compatible with OEM 835257Q1 and 835257K1.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is the hub kit compatible with 15-spline Flo-Torq II props?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The kit is designed for Flo-Torq II props that use a 15-spline drive sleeve and common Mercury\/Mariner applications.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"NIULPFZTK","offers":[{"title":"Default Title","offer_id":48020952416417,"sku":"B0DCJQR1D1","price":71.89,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/6532\/5729\/files\/niulpfztk-front-assembly-shot.jpg?v=1791303300","url":"https:\/\/canadiansporting.ca\/products\/niulpfztk-flo-torq-ii-hub-kit-for-mercruiser-alpha-bravo-mercury-outboards-15-spline-replacement-complete-835257q1-kit","provider":"Canadian Sporting","version":"1.0","type":"link"}