835257K12 Flo-Torq Reflex Propeller Hub Kit for Mercury Mariner Yamaha Honda Suzuki Tohatsu | JLM Marine

Flo-Torq Reflex Propeller Hub Kit 835257K12 – Fits Mercury, Mariner, Yamaha, Honda, Suzuki & Tohatsu Outboards

This Flo-Torq Reflex Hub Kit (835257K12) is designed for a wide range of outboard motors, including 40–60 HP 4-stroke Mercury and Mariner outboards (excluding Bigfoot or Command Thrust), 30 HP 4-stroke Mercury and Mariner (1994–2005), 30–60 HP 2-stroke Mercury and Mariner (1997 and newer), 25 HP Mercury Bigfoot and Mariner Command Thrust, and 55 HP Mercury Sea Pro and Mariner Marathon. It is also compatible with 40–60 HP Yamaha (excluding 50T and 60T), 35–60 HP Honda (requires thrust washer 8M0046466, sold separately), 35–60 HP Suzuki (requires thrust hub 8M008039, sold separately), and 35–50 HP Tohatsu (requires thrust washer 8M0053074, sold separately).

This aftermarket replacement directly replaces OEM part numbers 835257K12 and 835257Q12. The Flo-Torq Reflex hub system cushions and protects your drivetrain from impacts with submerged objects, while making propeller changes for different pitch, material, and applications more economical and convenient.

• Complete 4-piece Flo-Torq Reflex hub kit with all essential hardware
• Cushions drivetrain from propeller impacts on submerged objects
• Makes changing propellers for different pitch and material easy and cost-effective

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Compatible Engine Models

Confirm your engine model/year in the table below. For Mercury owners, here's a guide to help you identify your engine's serial/model: Mercury Serial Number Guide. You can also review exploded diagrams to verify part numbers: Mercury Parts Diagrams & Catalog.

For Yamaha owners, here's a guide to help you identify your engine's serial/model: Yamaha Serial Number Guide. You can also review exploded diagrams to verify part numbers: Yamaha Parts Diagrams & Catalog.

For Suzuki owners, you can review exploded diagrams here to verify part numbers: Suzuki Parts Diagrams & Catalog.

Technical Specifications

Package Contents

This complete 4-piece Flo-Torq Reflex hub kit includes:

• Thrust washer
• Delrin drive sleeve assembly
• Aft washer
• Prop nut

Important: For Honda outboards (35–60 HP), you must separately purchase thrust washer 8M0046466. For Suzuki outboards (35–60 HP), you must separately purchase thrust hub 8M008039. For Tohatsu outboards (35–50 HP), you must separately purchase thrust washer 8M0053074.

Installation Guide

1. Disconnect the spark plug wire or disable the ignition system to prevent accidental engine start during installation.
2. Remove the old propeller by loosening and removing the prop nut and any washers. Keep track of the order of components.
3. Slide off the old propeller and hub assembly from the propeller shaft.
4. Clean the propeller shaft thoroughly, removing any debris, corrosion, or old grease.
5. Install the thrust washer onto the propeller shaft, ensuring it sits flush against the gearcase.
6. Insert the Delrin drive sleeve assembly into the hub of your propeller until it seats properly.
7. Slide the propeller (with installed hub assembly) onto the propeller shaft, aligning the splines correctly.
8. Install the aft washer onto the shaft, positioning it against the back of the propeller.
9. Apply marine-grade grease to the propeller shaft threads and install the prop nut.
10. Tighten the prop nut to the manufacturer's recommended torque specification (consult your engine's service manual).
11. Verify that all components are secure and properly seated before operating the engine.
12. Reconnect the spark plug wire or re-enable the ignition system. Do not operate your engine without all propeller hardware in place and secure.

Troubleshooting & FAQ

Q: How do I confirm this hub kit fits my specific outboard engine?
A: Check the compatibility table above for your engine brand, horsepower, stroke type, and year. For Honda, Suzuki, and Tohatsu applications, verify you have the correct additional thrust washer or hub (sold separately). Always cross-reference with your owner's manual or parts diagram.

Q: What is the difference between this aftermarket kit and the OEM version?
A: This aftermarket Flo-Torq Reflex hub kit is manufactured to OEM specifications (835257K12 / 835257Q12) using comparable-grade materials in an ISO9002-certified facility. It delivers the same drivetrain protection and propeller-change convenience at a more competitive price point.

Q: How often should I inspect or replace the hub kit?
A: Inspect the hub assembly at the beginning of each season and after any propeller impact with submerged objects. Replace the hub if you notice cracking, excessive wear, slippage under load, or if the Delrin drive sleeve shows deformation.

Q: Can I use this hub kit with any brand of propeller?
A: Yes, this Flo-Torq Reflex hub kit works with Mercury, Quicksilver, and most aftermarket propellers designed for the compatible horsepower range. Ensure your propeller hub bore matches the Delrin drive sleeve diameter.

Q: What are the signs that my hub is failing or slipping?
A: Common symptoms include loss of power or RPM under throttle, the propeller spinning freely without moving the boat, unusual vibration, or a burnt rubber smell. If you experience any of these, inspect and replace the hub assembly immediately.

Q: OEM vs. Aftermarket?
A: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

Q: How fast do you ship and how much does it cost?
A: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

Q: What is your warranty and return policy?
A: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

• Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
• This product is an aftermarket replacement part and is not an OEM component.
• Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

• Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
• Fast Global Shipping: Free delivery worldwide in 5–15 days.
• Direct from Manufacturer: Competitive pricing without compromising quality.