Aluminum Propeller 9.9x11R (Mercury/Honda 25-30 HP, 10-Spline)

This 9.9x11R aluminum propeller is intended as a direct replacement for the original props used on small-to-mid outboard engines from Mercury, Mariner, Honda, and Tohatsu. The code PAF48-8537902 corresponds to Mercury’s OEM part number (48-853790A02), ensuring that the dimensions and characteristics match the factory-installed prop. The ~9.9″ diameter and 11″ pitch are typical for propellers on 25-30 HP engines, providing a good balance of acceleration and top-end speed.

With this 3-blade 11″ prop, your 4-5 m boat will gain steady holeshot performance – the 11″ pitch is well-suited for moderately heavy fishing boats or skiffs, giving them the push needed to plane. At the same time, this prop doesn’t overburden the engine, allowing it to reach proper WOT RPM for maximum speed on lighter boats. The sturdy aluminum construction ensures long service life and corrosion resistance. Installation is straightforward: simply remove your old prop and install the new one using the existing cotter pin and prop nut. This makes the PAF48-8537902 a convenient choice as a spare or an economical replacement without sacrificing performance.

Recommended Uses and Applications:

• Ideal for standard 4–5 m runabouts with Mercury/Mariner 25-30 HP engines – delivers factory-level performance or better, often improving smoothness of ride.
• Suitable for Honda BF25/BF30 and similar 4-stroke engines – the 11″ pitch helps when carrying extra passengers or gear without a significant loss in speed.
• Recommended as a backup prop for any boat with a 10-spline shaft (e.g. Tohatsu/Nissan 18-30 HP) – the compact size and common spec make this prop handy for quick swaps in case of damage.
• An excellent budget replacement – owners of old or damaged props can restore their boat’s original performance with this affordable yet quality propeller.