When mounted on less corrosion-prone materials, sacrificial anodes break down first. Sacrificial anodes are special metals that are especially prone to corrosion. The unique design of these propeller hubs lets you replace some propellers out in the field. Unlike friction driven hubs, low-torque hubs use gear-splines for leverage and grip. Not necessarily, but Mercury provides you with specialized quick-replace propeller shafts. The heavy duty gear ratio gives you a combination of performance and efficiency, ideal for high-HP crafts.ĭo you need special propellers for Mercury Marine motors? Constructed of stainless steel, its design includes specially processed pinion gears and a gear ratio in the 1.75:1 range. Heavy duty: This gearbox lives up to its nickname.This gearbox includes race-ready design factors like liquid-dynamic curves for less friction and more speed. Sports master: Much like its cousin the torque master, the sports master features a stainless steel spline.This makes them a common choice for larger and heavier powerboats. Torque master: 19-splined, stainless steel gearbox that offers extra durability, less slippage, and better performance than plastic or aluminum.The following is a list of some common choices. You can use a variety of gearbox designs with Mercury engines. If you get a gearbox capable of harnessing your horses, you will improve your performance. Mercury outboard motors come in a variety of shapes, horsepower (HP) ratings, and sizes. What kinds of gearboxes fit your Mercury outboard? Whether you need a powerful craft for commercial and athletic needs or something peppy for family outings, you will find a Mercury outboard that fits your needs. Built in a range of sizes, builds, and displacements, durable Mercury engines serve you in a range of applications. Tame the waves with a Mercury Marine outboard motor at your back.