Get your Saito Engines Prop Washer & NutHH SAI450R3D28 Replacement Engine Parts for your Air or Heli. Made by the trusted brand Saito Engines, these parts are compatible with your Saito Engines products. Designed for radio control and control line enthusiasts, these motor and engine parts and accessories are perfect for those 17 years and up. Upgrade your engine, exhaust, and fuel systems with these high-quality parts without worrying about the item's condition.