Yamaha - X Series Saltwater XL Propeller - 3 Blade - 15-1/4" x 21 Pitch - RH Rotation - 6AW-45976-20-00. This stainless-steel, three-blade propeller is designed for the V8 F350 four-stroke. It provides plenty of power-to-plane, acceleration, and top-end. The updated hub system accommodates older Yamaha F350s. Yamaha X Series Propellers for 5.25" Gearcases are designed for use with Yamaha V8 Outboard Models and include Yamaha X Series Saltwater Series XL Stainless Steel propellers and Saltwater Series XL4-HP Stainless Steel propellers.. 6AW-45976-20-00 - SWSXL W/SDS 3 BLD(15 1/4 X 21)