Mercury Gear Set 27/32 (43-883473A4)

The Mercury Gear Set is a critical transmission component that ensures the correct, balanced, and lossless transfer of engine power to the propeller via the gear mechanism. The Mercury Gear Set 27/32 (43-883473A4) is designed to provide stable power distribution, quiet operation, and long-lasting mechanical performance, especially in systems operating under high loads. The correct gear ratio directly affects acceleration characteristics, low-speed torque, and cruising efficiency.

This gear set, coded 43-883473A4 and featuring a 27/32 tooth ratio, minimizes friction during contact and reduces vibration thanks to its precisely machined tooth surfaces. Maintaining tooth shape under conditions of continuous load changes, sudden throttle responses, and prolonged use limits noise and reduces wear on secondary parts. Timely replacement of worn or mismatched gear sets is crucial, as they can lead to performance loss, overheating, and eventually serious mechanical damage.

Mercury Gear Set 27/32 Technical Advantages

The Mercury Gear Set (43-883473A4) has exact dimensional tolerances compatible with the relevant gearbox and ensures balanced power transmission. Using genuine Mercury spare parts prevents assembly incompatibilities while providing reliable performance in line with Mercruiser spare part standards. With professional installation and regular maintenance, the efficiency and service life of the gear system are preserved for many years.