Honda BF250DK1UCDA 250HP – iST 30″ Shaft Counter Rotation in White

Honda BF250DK1UCDA 250HP VTEC V6

The Honda BF250DK1UCDA pairs a 3.6L 24-valve SOHC V6 VTEC engine with counter-rotation gearing, finished in white at 642 lbs dry. The 30-inch extra-extra-long shaft is essential for hydrodynamic balance in multi-engine arrays, part of Mulmarine’s outboard propulsion systems lineup.

Peak output holds between 5300-6300 RPM, using VTEC for strong thermal efficiency. The 2.00:1 gear ratio is tuned to optimize hole-shot performance and hold cruising stability in heavy offshore swells. Engineered in Japan, this corrosion-resistant unit includes vibration dampening for a quieter, smoother ride.

Technical Specifications of Honda BF250DK1UCDA

• The 3.6L V6 SOHC architecture delivers strong displacement for low-end torque.
• iST provides drive-by-wire precision for effortless vessel management.
• Counter-rotation left-hand drive balances steering torque in dual- or triple-engine setups.
• VTEC optimizes intake valve timing at high RPM for stronger power and offshore speed.
• The 90-Amp alternator delivers charging power for radar and sonar suites.
• Programmed Fuel Injection (PGM-FI) ensures precise fuel delivery for reliable cold starts.
• NMEA 2000 certification allows full engine data integration with digital helm screens.

V6 VTEC Performance

This iST outboard uses VTEC to shift cam profiles at high RPM, holding a flat torque curve for consistent acceleration under heavy offshore loads.

iST Digital Control

The iST system removes mechanical cables for drive-by-wire control, giving smooth gear engagement and precise throttle synchronization maneuvering in coastal harbors.

30-Inch Counter Shaft

The 30-inch shaft is built for high-transom vessels needing deep propeller grip in offshore swells, with the counter-rotation gearbox balancing steering forces in multi-engine configurations.

Fuel Induction Precision

The fuel induction system manages the air-fuel mixture precisely to optimize thermal efficiency and reduce consumption, giving instant hole-shot performance.

Limited Honda Warranty

Honda Marine backs this unit with a 5-year limited warranty covering major components against manufacturing defects.

Premium Vessel Application

This white V6 fits luxury center consoles and high-transom offshore cruisers needing sustained thrust through heavy swells.

Maintenance & Longevity

Routine maintenance of the 3.6L V6 cooling system prevents internal salt corrosion. Inspect the wet sump lubrication system regularly. Pro Tip from the Shop: apply marine wax to the white finish periodically to maintain UV resistance and prevent salt-spray staining.