Although aluminum is the lowest-cost option for most engines, Yamaha aluminum propellers provide better performance than other aluminum propellers because of their precise matching to Yamaha engines. Their lightweight and lower cost also makes them an excellent choice as a spare propeller, in case the primary propeller is accidentally damaged striking an underwater object.
For 4hp, 5hp and F4 (Splined Type)
NOTE: It is generally best to pick the lowest pitch propeller that produces engine speed near the maximum shown in your Owner's Manual. More accurate information for a particular boat may often be obtained from the boat manufacturer directly or by visiting the Yamaha web site at www.yamaha-motor.com and checking out the Performance Bulletin section. On-water propeller testing is always best.