Honda BF350AXCDA 350HP – iST 25″ Shaft Counter Rotation in Silver

Honda BF350AXCDA 350HP V8 iST

The Honda BF350AXCDA pairs a 5.0L V8 with counter-rotation gearing, finished in silver at 765 lbs dry — built for dual-engine offshore vessels running two matched motors. The 25-inch shaft is a critical piece of Mulmarine’s outboard propulsion systems lineup for dual-engine boat configurations.

Peak output holds between 5000-6000 RPM. The 1.79:1 gear ratio is tuned to improve the torque curve for faster planing and stronger hole-shot performance in heavy coastal swells. Engineered in Japan, this corrosion-resistant outboard includes vibration dampening for comfort during demanding offshore runs.

Technical Specifications of Honda BF350AXCDA

• The 5.0L V8 32-valve SOHC architecture delivers strong displacement for torque performance under heavy loads.
• Counter-rotation left-hand rotation gives balanced handling and tracking in dual-engine setups.
• iST provides a seamless drive-by-wire helm experience for precise vessel maneuvering.
• Integrated electric power steering compatibility removes mechanical steering feedback for effortless control offshore.
• A 93-Amp alternator delivers 70 net Amps of charging for complex electronics suites.
• Power Trim and Tilt allows rapid engine positioning to maximize hydrodynamic efficiency.

V8 VTEC Power

This VTEC-equipped V8 uses variable timing to deliver high-end speed without sacrificing low-end trolling performance, giving a versatile power band for offshore mariners.

Fuel Induction Precision

The fuel induction system manages the air-fuel mixture precisely for consistent power and efficiency, giving instant throttle response during high-speed runs through coastal inlets.

Counter Rotation Shaft

The 25-inch shaft’s counter-rotation gearbox cancels the sideways pull of a standard propeller, improving hydrodynamic tracking and steering ease on large dual-engine vessels.

Digital Helm Integration

NMEA 2000 certification lets the engine send battery voltage and RPM data directly to the boat’s electronic helm displays in real time.

Five Year Coverage

Backed by a 5-year limited warranty, this engine gives US boat owners long-term coverage and access to genuine parts through nationwide factory service.

Multi-Engine Craft Match

This counter-rotation V8 pairs with a standard-rotation engine on large offshore center consoles, delivering the torque needed for coastal inlets and heavy swells.

Maintenance & Longevity

Consistent maintenance of the 5.0L V8 oil level and filter quality is essential for long-term engine health. Flush the cooling system thoroughly after saltwater outings to maintain corrosion resistance. Pro Tip from the Shop: inspect and lubricate the counter-rotation gearbox seals every 100 hours to ensure smooth gear engagement and prevent saltwater intrusion.