The Volvo Penta Duoprop for DPS-A Drives – Type D drive is perfectly matched for V6 and V8 gasoline engines, plus the D3 sport diesel. Built for performance and driving fun, it is the perfect companion aboard a sport boat, sport cruiser, sport fisher, bow rider, etc. These props are hydrodynamically advanced and low weight giving better speed and performance. Volvo Penta Duoprop for DPS-A Drives – Type D The aluminium propeller for all gasoline and diesel engines using the DPS drive, with speeds up to 35 knots. For complete kit use the I series propellers. Note! Do not mix D series with I series on the same drive. For twin installations use only the same propellers. Do not mix D and I propellers.