Solas Amita 3 Aluminum Prop 12.2x8 for Mercury 25-70 HP

The Solas Amita 3 12.2x8 is an aluminum propeller built to meet the demands of larger Mercury/Mariner outboard engines (25 to 70 HP) when faced with heavy-duty operating conditions. With its substantial 12.2″ diameter and very low 8″ pitch, this propeller is aimed at scenarios where maximum thrust is the priority – such as pushing heavily laden boats, driving hulls with significant drag (like pontoons or barges), or improving handling at slow speeds.

The low pitch means the engine can spin up to higher RPM much more easily, even when the boat encounters a lot of resistance (weight or water drag). This prevents the engine from "bogging down" and allows it to operate in its optimal range, delivering continuous power. In practical terms, the 12.2x8 prop helps boats loaded to the brim get moving assertively and stay under control, without the engine struggling. Naturally, the lower pitch will cap the vessel’s top speed, but that trade-off is acceptable when your main goal is powerful thrust and safety rather than sheer velocity.

The construction of the Solas Amita 3 12.2x8 is reinforced to withstand the high torque and vibration from bigger engines. The blades are broader and cast for extra strength (using Solas’s squeeze-casting process), which makes them resistant to flexing and mechanical stress. The prop is carefully balanced so that despite the large blade area and low pitch, vibrations are kept to a minimum – important for long-term running in tough conditions where material fatigue must be avoided. Solas has applied its signature heavy-duty anti-corrosion coating as well: even after seasons of saltwater use, this prop will maintain its integrity and won’t fall prey to corrosive pitting or electrolysis damage.

Installation is done on a standard Mercury/Mariner gearcase for the 25-70 HP class – that means a 13-spline hub, which fits engines like Mercury 30, 40, 50, 60 (standard gearcase, including older 2-stroke 70 HP models). The prop has right-hand rotation (RH), typical for single-engine setups. When mounting, it’s recommended to use the appropriate hub kit (such as the RUBEX hub for Solas props, if not an integrated hub) or the original Mercury thrust washer and hardware, then torque the prop nut to spec. Once the Solas 12.2x8 is in place, your boat will show a marked improvement in its load-carrying capability – you’ll notice the engine feels less strained when accelerating and maneuvering, and the boat will move steadily even at low speeds or during tasks like docking.

Recommended Uses and Applications:

• Specially recommended for pontoon boats, work barges, or large fishing vessels (~16 – 20+ ft) powered by 30-60 HP engines that carry heavy loads or groups of passengers – this prop provides the needed thrust for safe movement
• Suitable for situations where a boat struggles to plane with a normal prop – the 8" pitch helps 40-60 HP motors reach the necessary RPM to lift the boat onto plane under tough conditions
• An excellent choice for utility boats and watersports support vessels operating at lower speeds (e.g., towing trawling gear, nets, or other equipment) – it ensures the engine won’t lose power when drag increases
• A smart option for owners who frequently boat in shallow or debris-prone waters – an aluminum prop is more economical and easier to repair than stainless, and the Solas 12.2x8 will also protect your motor by preventing overload if the boat gets bogged down