Mercury MerCruiser FloTorq II Hub Kit for Outboard Engines, Metal and Plastic

Designed for Mercury MerCruiser and Mariner outboard engines, the Mercury MerCruiser FloTorq II Hub Kit is a robust, easy-to-install interface that helps keep your propeller perfectly aligned with the drive. Built from a durable mix of metal and plastic, this modular hub system supports Flo-Torq II propellers across a wide engine range (60–300 HP) with 15-spline drives. It’s a precise, OEM-compatible replacement ideal for Alpha and Bravo One sterndrives and standard MerCruiser/Mariner setups, delivering reliable performance and reduced drivetrain wear.

Whether you’re performing routine maintenance, restoring an older system, or upgrading to a proven Flo-Torq II connection, this hub kit puts you in control. It replaces OEM 835257Q1/K1 and fits all Mercury-made propellers that accept Flo-Torq II, ensuring a snug, secure fit. Note that it does not fit Mercury/Mariner models from 1977 and older. With straightforward installation and a comprehensive hardware kit, you’ll cut downtime and get back on the water quickly.

Benefits & Tips

• Reliable replacement that minimizes downtime—swap in the Flo-Torq II hub kit and restore propeller alignment without waiting for specialized parts.
• Versatile compatibility—designed to fit Mercury 60–300 HP engines, 15-spline drives, Alpha/Bravo One sterndrives, and MerCruiser/Mariner configurations.
• Includes all essential components for a complete install—forward thrust washer, drive sleeve, aft adaptor, tab washer, and propeller nut.

Product specifications

• Brand Name: NONE
• Type: Outboard Hub Kit
• Material: Metal & Plastic
• Origin: Mainland China
• Application / OEM compatibility: 835257K1 835257Q1
• Fits: Mercury 60–300 HP (15 spline); Alpha and Bravo One Sterndrives; MerCruiser/Mariner 75–125 HP ranges; Verado 200–300 HP range
• Replaces OEM numbers: 835257Q1
• Flo-Torq II compatibility: Fits all Flo-Torq II propellers; not compatible with 1977 and older Mercury/Mariner models

Package includes:

• 1× Forward thrust washer
• 1× Drive sleeve
• 1× Aft adaptor
• 1× Tab washer
• 1× Propeller nut

Warnings/Reminders

• Ensure compatibility with your engine and propeller before purchase—this hub kit supports Flo-Torq II interfaces and is not suitable for 1977 and older Mercury/Mariner models.
• Install to the manufacturer’s torque specifications to avoid overtightening and potential damage to the hub or propeller.

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