Mercury - 400 14.75LH34 15R - 48-8M0181201. Unlock elite-level performance with the Mercury - 400 14.75LH34 15R - 48-8M0181201 stainless steel propeller, engineered for Mercury Racing 400R engines requiring left-hand rotation. Designed for boats pushing speed and handling limits, this premium prop offers precise control, improved acceleration, and unmatched durability in tough offshore conditions.. Key Features. Left-Hand Rotation - Ideal for twin-engine setups to balance torque and enhance stee