Mercury - Verado12 Front Propeller 29" Pitch Left-Hand 4-Blade Stainless Steel Polished 8M0166987. Overview. There's a moment when a big boat climbs out of its own wake and just goes - clean, level, unhurried. The Mercury Verado12 Front 4-Blade Stainless Steel Propeller (part number 8M0166987) creates that moment on command. It grips undisturbed water first, feeding the rear prop with perfect flow. The result is a smooth, confident lift and a throttle response that feels precise rather than loud