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If you are looking for a reliable, affordable replacement propeller for your Mercury outboard, this high-strength aluminum 3-blade propeller is exactly what you need. Whether you are running a small 5hp engine on a dinghy or a powerful 300hp motor on a larger fishing boat, there is a specific size and pitch option designed to match your engine's specifications. These props are built with a reinforced hub and a precision-machined brass spline sleeve for a secure fit and smooth power transfer. Featuring a tough black powder-coated finish, they stand up to normal wear and tear from sand, mud, and debris, giving you consistent performance without the high cost of an OEM part.
| Parameter | Details |
|---|---|
| Brand Compatibility | Mercury Outboard Motors (including Mariner) |
| Material | High-Strength Aluminum Alloy |
| Blade Count | 3 Blades |
| Hub System | Brass Splined Sleeve |
| Tooth Options Available | 10T, 12T, 13T, 14T, 15T, 19T |
| Compatible Horsepower Range | 5HP to 300HP (Check specific listing for your engine) |
| Engine Types Supported | 2-Stroke & 4-Stroke |
| Finish | Matte Black Powder Coating |
| Installation | Direct bolt-on replacement |
You can usually find this information in your outboard motor's owner's manual. You can also remove your current prop and count the splines inside the hub. The pitch is stamped on the side of your existing propeller (e.g., 10.3x12 means 10.3 diameter and 12 pitch). If you are unsure, you can message us with your exact Mercury model and horsepower for a recommendation.
Aluminum is lighter, more affordable, and easier on the lower unit if you hit a rock or log because the prop will bend or break before damaging the gearcase. Stainless steel is much stronger, allows for thinner and more efficient blade designs, and costs significantly more. For general boating and casual fishing, aluminum is the practical choice.
Yes, we have a specific variant for Mercury 60HP to 140HP engines. Select the "Water Star 60-140HP 15T" option, and choose your preferred pitch (15 inch or 17 inch) from the dropdown menu. This variant uses a 15-tooth spline and is designed for that horsepower range.
Yes. We have a dedicated listing for "Mercury Old Style 25/30HP 10T" with 11, 12, and 13-inch pitch options. This fits the older 25HP and 30HP 2-stroke Mercury engines with a 10-tooth spline shaft. Please verify you have a 10-tooth shaft before ordering.
No, the prop nut, thrust washer, and cotter pin are not included. You should reuse the hardware from your existing propeller or purchase new genuine Mercury hardware. We recommend applying marine grease to the splines before installation to prevent corrosion and seizing.
