Solas Volvo Penta DuoProp Front Propeller 15x21 (3-Blade Stainless) – Type C6

This Solas front propeller (Part No. 8532-150-21) is intended for Volvo Penta’s DuoProp twin-propeller systems (models DP280, DP290 and similar), replacing the original front prop in the A, B or C series sets (specifically corresponding to the stainless C6 set in size). With 3 blades, a 15″ diameter, and 21″ pitch, the prop is engineered to deliver equal or better performance compared to the OEM propeller – including quick holeshot, strong midrange thrust, and high top-end speed. Its blade geometry and rake are compatible with the original Volvo Penta design, meaning it can be installed alongside the matching 4-blade rear prop (21″ pitch) with no fit issues. The stainless steel construction gives the prop significant advantages: thinner yet stronger blades (less flex under load), better resilience to damage from floating debris, and exceptional corrosion protection when used in saltwater. Usage and Recommendations: The Solas DuoProp 15x21 (front) should be combined with the corresponding Solas rear propeller (4-blade, 15x21, RH) to form a complete set. This C6-type set is suitable for boats equipped with Volvo Penta AQ series sterndrives (gasoline V8 or diesel engines up to ~DP-E generation) with DP280/DP290 drives, where factory prop sets like A6, B6, or C6 were used. Installation is straightforward: the prop slides onto the splined front shaft and is secured with the original nut/keeper. Ensure that the alignment of the front and rear prop is correct (as per Volvo’s instructions) – when properly installed, Solas props will run smoothly with the existing cone and spline configuration. After replacement, you may notice improved acceleration and the ability to hold plane at slightly lower RPM, thanks to the efficiency of the stainless steel blades. Also, the durability of these props means you’ll need to replace props less often – they will retain their balance and blade integrity for years. Advantage over aluminum props: If you are upgrading from an aluminum set (e.g., series A or B) to this stainless set (series C equivalent), expect crisper throttle response, less blade flex under heavy load (maintaining consistent pitch), and longer service life – an investment that pays off over time through better fuel efficiency and less maintenance.

• OEM compliant – an exact equivalent to Volvo Penta’s C6 front prop; Solas has engineered this prop to meet the original specifications, ensuring the same thrust and engine RPM characteristics as the factory model
• Part of a duo set – to be used with the 4-blade 15x21 rear prop (Solas Part No. 8541-150-21, corresponding to the C6 rear); the pair together guarantees optimal propeller interaction and maximum efficiency
• Improves acceleration & economy – stainless blades do not flex like aluminum under high load, so all the engine’s power is converted into thrust; the boat planes faster and can stay on plane at lower RPM, which saves fuel
• Higher toughness & reliability – a steel prop withstands impacts from small debris (sticks, flotsam) better than aluminum, reducing damage risk; you’ll need to straighten or replace props less frequently
• Seamless integration – Solas DuoProp props mount with the same hubs, splines, and nuts as the originals; no additional adapters or drive modifications are required, making the switch to Solas straightforward and secure