1. APPLICATION: This aftermarket propeller is compatible with BRP, JOHNSON, EVINRUDE, and E-TEC outboard engines ranging from 40 to 140HP, featuring a 13-spline tooth shaft. Be sure to verify your engine shaft specifications before purchasing and consult the product description for detailed engine compatibility. 2. INSTALLATION: For safe propeller servicing, always shift your engine into neutral and turn off the ignition. Refer to your Engine's Owner Manual for essential precautions. Install the propeller using the existing thrust washer, spacer, and nut from your engine's lower unit shaft. The propeller comes complete with a split pin for secure installation. 3. MATERIAL: Crafted from high-strength aluminum, this propeller utilizes hybrid casting technology, incorporating strontium, aluminum, and titanium for enhanced strength and durability. 4. EXTREME ANTI-CORROSION: The propeller features a robotic powder-coated finish using AkzoNobel's patented anti-corrosive coating. This environmentally friendly process ensures long-lasting protection against corrosion. Benefit from superior performance and durability with this propeller, making it ideal for recreational boating, fishing trips, and water sports activities. Its strong construction and corrosion resistance enhance reliability, reducing the need for frequent replacements. With a straightforward installation process and compatibility with a range of popular outboard engines, this propeller is designed to meet the demands of your marine adventures.