Precise Compatibility: Our four-blade outboard propeller is built for selected Mercury/Mariner 135-300 HP outboard engines with a 4-3/4 in gearcase and right-hand rotation. It can be used as a direct replacement

Sturdy & Durable: Made from corrosion-resistant aluminum alloy, this boat propeller is suitable for extended use in both freshwater and saltwater conditions. It also remains lightweight to improve rotational efficiency

Powerful Thrust: With a 14 in diameter and 19 in pitch, this outboard boat propeller delivers stability and strong water grip at higher cruising speeds, with low vibration and confident control. It is suitable for larger boats used for steady cruising

Easy Installation: Our boat outboard propeller includes a robust M21 interchangeable hub kit, ensuring a secure connection to the engine drive shaft and simplifying installation

Smooth & Quiet: Each propeller is strictly tested for proper fitment. The outboard motor propeller features an internal rubber hub to cushion and keep your engine from shock loads, effectively reducing vibration and noise