SKU:
Osculati-52.580.02
$ 98,36
1-2 weeks delivery time
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Osculati 52.580.02 is a Polastorm Hub Kit F21 developed for Mercury 90 Command Thrust (CT) to 400 HP outboards. It features a 15-spline broaching and fits large gearcases with a 4 3/4" (120.7 mm) diameter. Designed to absorb vibration and protect driveline integrity under high torque, the kit is ideal for heavy-duty applications using aluminum or stainless steel Polastorm propellers. Fully compatible with F21-series hub systems, this kit includes all essential components for precise and secure propeller installation.
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Osculati 52.580.02 – Polastorm Hub Kit F21 for Mercury 90CT–400 HP, 15 Teeth Broaching, 4" 3/4 (120.7 mm)
The Osculati 52.580.02 Polastorm Hub Kit F21 is designed for Mercury outboard engines from 90 Command Thrust (CT) up to 400 HP. With a 15-spline broaching and compatibility with gearcases measuring 4 3/4" (120.7 mm) in diameter, this hub kit provides reliable power transfer, shock absorption, and spline protection. It is suitable for both aluminum and stainless steel Polastorm propellers and includes all necessary hardware for quick and secure mounting. Ideal for high-performance or offshore applications requiring a robust, vibration-dampening hub system.
Kit Composition:
- Tear stopper
- Thrust stop
- Front washer
- Spacer
- Locking nut
Key Features:
- For Mercury 90 CT to 400 HP outboard engines
- 15-spline broaching (F21 type)
- Fits large gearcases: 4 3/4" (120.7 mm)
- OEM-equivalent hub insert for Polastorm propellers
- Shock-absorbing design protects driveline and propeller
- Compatible with aluminum and stainless steel propellers
Technical Specifications:
Item Code Osculati 52.580.02 Model F21 Gearcase Diameter 4 3/4" (120.7 mm) Number of Splines 15 Compatible Engine Brand Mercury Recommended Engine Power 90 CT – 400 HP Included Components Tear stopper, thrust stop, front washer, spacer, nut Documents
Osculati Catalogue 2025 - page 1045 Size: 107,2 Kb -
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