Premium Outboard Propeller Installation Hardware Kit for Yamaha Engines

Replacing your propeller? Doing it right requires the exact fitment. Our marine-grade propeller hardware kit provides everything you need to mount your prop securely, reducing vibration and protecting your lower unit from costly damage.

CRITICAL FITMENT GUIDE - COUNT YOUR SPLINES BEFORE PURCHASE:
To avoid returns and ensure your safety on the water, please strictly match your Engine Horsepower (HP) and Propeller Shaft Spline Tooth count to the correct variation:

6-8 HP: 7 Spline (Kit includes: 1x Thrust Washer, 1x Washer, 1x Nut, 1x Cotter Pin. *Spacer N/A)
9.9-20 HP: 8 Spline (Kit includes: 1x Thrust Washer, 1x Washer, 1x Nut, 1x Cotter Pin. *Spacer N/A)
20-30 HP: 10 Spline (Kit includes: 1x Thrust Washer, 1x Spacer, 1x Washer, 1x Nut, 1x Cotter Pin)
40-60 HP: 13 Spline (Kit includes: 1x Thrust Washer, 1x Spacer, 1x Washer, 1x Nut, 1x Cotter Pin)
60-90 HP: 15 Spline (Kit includes: 1x Thrust Washer, 1x Spacer, 1x Washer, 1x Nut, 1x Cotter Pin)
100-130HP & 150-300HP: 15 Spline (Kit includes: 1x Thrust Washer, 1x Spacer, 1x Washer, 1x Nut, 1x Cotter Pin)

Why Choose Our Hardware Kit?
1. Marine-Grade Materials: Built with heavy-duty solid brass and stainless steel to resist saltwater corrosion, rust, and extreme wear.
2. Precision Engineering: The thrust washer is perfectly machined to sit on the prop shaft, transferring thrust efficiently and preventing spline stripping.
3. Complete Drop-in Solution: Whether you need the spacer for mid-to-large outboards or the streamlined setup for small kicker motors, we provide the exact OEM-spec components for a direct, hassle-free replacement.

Installation Note: Always ensure the thrust washer is installed first, tapering towards the gearcase. Slide on the propeller, add the spacer/washer, tighten the castle nut firmly, and lock it with the included cotter pin for maximum safety.