Honda 250HP iST | BF250DUCDA

On a 30-inch shaft, the BF250DUCDA puts out 250 horsepower from its four-stroke V6. This engine is listed at 628 lbs. This engine relies on Honda's iST system for shift and throttle, not a mechanical cable. This configuration's rotation is mirrored from Honda's standard setup, built to offset a matching standard-rotation engine on a twin install rather than for solo use specifically. This block totals 3583cc over six cylinders, fed by Honda's electronic fuel injection system.

What to verify before buying

Check this 30-inch shaft against your transom first; Honda offers multiple shaft lengths at this horsepower precisely so you can match the hull. This unit's top-end range is 5300-6300 rpm at full throttle. Expect this motor mostly on repower jobs, where the new engine matches the boat's existing capacity.

Included equipment

Beyond the counter-rotating gearcase and electronic shift-and-throttle linkage, charging capability and a freshwater flush fitting make up the core equipment, with trim and tilt alongside; capped by the manual and a 5-year Honda coverage term. Expect to source a propeller on its own for this unit.

Does counter-rotation change maintenance at all? Not meaningfully; service follows the same schedule as the standard-rotation version of this engine.

Does the DUCDA ship with a propeller? No, that's a separate purchase.

What induction system feeds this block? Electronic fuel injection (EFI), not a carburetor.