Honda BF350AUCDA 350HP – iST 30″ Shaft Counter Rotation in White

Honda BF350AUCDA 350HP V8 iST

The Honda BF350AUCDA pairs a 5.0L 32-valve SOHC V8 with counter-rotation left-hand drive, finished in white at 782 lbs dry — built for multi-engine offshore arrays running two or three engines. The 30-inch extra-long shaft delivers the torque and reach needed for heavy offshore hulls on long saltwater transits.

Peak output hits at 6000 RPM, using VTEC to optimize valve timing at high RPM for stronger top-end power. The 1.79:1 gear ratio is tuned for hydrodynamic efficiency and steady cruising through offshore swells. Built with Honda’s usual Japanese engineering standards, the platform includes vibration dampening and integrated electric power steering compatibility.

Technical Specifications of Honda BF350AUCDA

• The 5.0L V8 32-valve SOHC architecture delivers strong displacement for a broad torque curve.
• iST (Intelligent Shift and Throttle) provides drive-by-wire precision for effortless vessel management.
• Counter-rotation left-hand drive balances steering torque in dual or triple-engine offshore setups.
• VTEC optimizes intake valve timing at high RPM for stronger top-end power and efficiency.
• A 93-Amp alternator delivers 70 net Amps to support radar and other high-draw electronics.
• Programmed Fuel Injection (PGM-FI) ensures precise fuel delivery for reliable cold starts.
• NMEA 2000 certification allows full engine data integration with modern digital helm screens.

V8 VTEC Power Architecture

This V8 iST outboard uses VTEC to shift cam profiles at high RPM, building a flat torque curve for consistent acceleration under heavy offshore loads — the kind of sustained thrust captains need for long offshore transits.

iST Drive-By-Wire Precision

The Intelligent Shift and Throttle system replaces mechanical cables with drive-by-wire control, giving smooth gear engagement and precise throttle synchronization — useful maneuvering large offshore vessels in busy harbors.

30-Inch Counter Shaft

The 30-inch shaft is built for extra-high transoms that need deep propeller immersion and hydrodynamic grip in offshore swells. The counter-rotation gearbox balances steering forces in multi-engine arrays, useful on large fiberglass offshore cruisers and sportfishing walkarounds.

Integrated Electric Steering

Compatible with integrated electric power steering, this V8 gives effortless helm control regardless of speed or sea conditions — less operator fatigue on long coastal transits and better maneuverability in tight quarters.

Honda 5-Year Protection

Honda Marine backs this 350HP unit with a 5-year limited warranty covering major components against manufacturing defects, with nationwide support for US boat owners.

Luxury Offshore Hull Match

This white BF350AUCDA V8 iST fits large center consoles and high-transom offshore cruisers that need sustained thrust through heavy swells and coastal tidal flows.

Maintenance & Longevity

Routine maintenance of the 5.0L V8 cooling system prevents internal salt corrosion and overheating. Check the wet sump lubrication system and net charging output regularly for peak mechanical protection. Pro Tip: apply marine wax to the white finish periodically to maintain its UV resistance and prevent salt-spray staining in intense coastal sun.