Mercury - Verado12 Front Propeller 33" Pitch Left-Hand 4-Blade Stainless Steel Polished 8M0166991. Overview. When you are piloting a powerful V12 setup, you can feel when the prop is in sync - everything feels balanced, calm, and efficient. The Mercury Verado12 Front 4-Blade Stainless Steel Propeller (part number 8M0166991) captures that sweet spot between strength and smoothness. It digs in, lifts the boat evenly, and keeps it steady at speed, all while running whisper-quiet. You'll know it's r