Mercury - Verado12 Front Propeller 31" Pitch Left-Hand 4-Blade Stainless Steel Polished 8M0166989. Overview. If your days run long and your routes run far, this is the kind of hardware that keeps the boat composed and the helm relaxed. The Mercury Verado12 Front 4-Blade Stainless Steel Propeller (part number 8M0166989) delivers tall pitch authority with a surprisingly gentle touch. It grabs, lifts, and then settles into a smooth push that feels efficient rather than forced. Big water manners, sm