KSJED Flo-Torq II Hub Kit for Mercury 60-300 HP — 15-Spline Replacement Kit with Thrust Washer & Drive Sleeve

KSJED Marine 835257Q1 Flo-Torq II Hub Kit is a complete replacement hub assembly designed to reduce propeller rattle and restore smooth transfer of engine power to Flo-Torq II-compatible props.

This Flo-Torq II hub kit is built as a direct-fit replacement for several OEM numbers and engine ranges, providing the wear components needed to maintain proper propeller engagement on many Mercury, Mariner, MerCruiser and Verado applications. The kit includes the forward thrust washer, drive sleeve, aft adapter, tab washer and propeller nut so you get the core parts required when servicing a 15-spline Flo-Torq II system. It fits a wide variety of propellers, including Michigan Wheel and Mercury interchangeable types, and supports common prop sizes used across sterndrive and outboard installations.

Which engines and propellers is this hub kit compatible with?

The KSJED Flo-Torq II hub kit covers a broad range of engines and propeller patterns. It fits Mercury outboards from 60–300 HP, specific Mariner/Mercury models by year and horsepower, MerCruiser Alpha and Bravo One sterndrives, and Verado 200–300 HP units with standard shafts. Confirm your propeller accepts Flo-Torq II before installation.

• Mercury 60–300 HP outboards (15-spline)
• Mariner/Mercury 75 HP (1984+), 90 & 115 HP (1978+), 125 HP (1994+)
• MerCruiser 120–375 HP Alpha and Bravo One sterndrives
• Verado 200–300 HP (not compatible with Verado V8 1.25" shafts)
• Fits 13 1/4 x 17 and 14 1/2 x 19 propeller sizes and Michigan Wheel/Mercury interchangeable props

How does the kit address propeller noise and shifting issues?

The replacement components restore the intended friction and spacing inside the Flo-Torq II hub, which helps minimize propeller rattle and shifting clunks. By replacing worn internal parts, the hub transmits torque more evenly and reduces unwanted movement between the propeller and shaft under load changes.

• Includes forward thrust washer to control axial play
• Drive sleeve and aft adapter restore correct engagement
• Tab washer and nut secure the propeller assembly
• Replaces OEM 835257Q1 / 835257K1 for a direct-fit swap

What’s included in the kit and are any tools or extras required?

This hub kit includes the core wear items needed for reassembling a Flo-Torq II prop hub: thrust washer, drive sleeve, aft adapter, tab washer, and propeller nut. Installation typically requires standard marine prop tools and basic mechanical skill; specialty measurements or machining are not part of the kit.

• Forward thrust washer, drive sleeve, aft adaptor
• Tab washer and propeller nut included
• No grease, sealant, or additional spacers are supplied
• Use prop puller, torque wrench, and appropriate retention tool for installation

Are there fitment limitations or important notes before buying?

Confirm your engine’s spline count and propeller acceptance of Flo-Torq II before ordering. The kit is not compatible with Verado V8 engines that use 1.25" prop shafts, and some unusual prop models may require different hub systems.

• Not compatible with Verado V8 1.25" prop shaft systems
• Designed for 15-spline Flo-Torq II prop hubs
• Check prop dimensions (13 1/4 x 17 or 14 1/2 x 19 commonly supported)
• Always verify OEM cross-reference numbers 835257Q1 / 835257K1

Who this is for: Boat owners, marine mechanics and service yards running Mercury, Mariner, MerCruiser Alpha or Bravo One, and compatible Verado engines who need a reliable replacement hub assembly to remove play, reduce propeller noise and re-establish correct prop shaft engagement. If you maintain Flo-Torq II propellers and want a complete set of replacement internal parts for a 15-spline hub, this KSJED kit supplies the commonly replaced items for routine servicing and troubleshooting.