World-renowned Honda quality combines proven reliability and superior fuel efficiency, with no oil mixing.
Lightest in its class
Honda’s elegant 40 hp design is the lightest engine available in its class. Perfect for aluminum boats, inflatables, skiffs and flats boats.
Lean Burn Control® – Superior fuel efficiency
Lean Burn Control® increases fuel efficiency by allowing combustion to operate on a leaner air/fuel mixture. At cruising speed, this engine runs on as much as 20% less fuel* than others in its class.
*Based on the EPA’s Specific Fuel Consumption Mode.
BLAST® System – improves acceleration at low speeds
Boosted Low Speed Torque, or BLAST, improves acceleration at low speeds. A quick movement of the throttle control activates the BLAST® system, advancing the ignition curve aggressively. “Hole Shot” is vastly improved as more horsepower gets the hull up on plane quicker.
Programmed Fuel Injection – Powerful performance
Programmed Fuel Injection delivers the precise amount of fuel/air to each cylinder. The result is easy starts and instant throttle response with superior fuel efficiency.
High Performance Gearcase – gets you going faster
Designed to get you going faster, the BF40’s gearcase reduces drag, greatly reduces hull porpoise and minimizes spray, thus increasing acceleration and top speed.
- A longer anti-ventilation plate helps trap water flowing to the propeller to minimize porpoising
- A streamlined front and longer bullet reduce drag for enhanced acceleration and fuel efficiency
A front splash plate reduces spray from the hull bottom, maintaining a dry deck above.
Offset Crankshaft Design
Honda’s exclusive crankshaft design locates the powerhead directly over the transom pivot point. This has two effects. It reduces vibration and improves performance and handling. It also provides for a very compact design.
Engine Alert System – Keeps you informed
Audio and visual cues combine with RPM reduction circuits to alert the operator of overheating, low oil PSI and over-revving to prevent engine damage.
Tiller models feature a new 4-lamp warning system built into the tiller handle, while remote control models deliver alerts via messages through Honda’s multi-function digital gauges or a special indicator built into the unit’s control box.
4-Front Corrosion Protection System – Fights the elements
A patented, “Double Sealed” multi-layered paint process. Sacrificial anodes and stainless steel technology, along with waterproof connectors, all enhance corrosion protection.
Ultra Low 3 Star CARB Emissions
Environmentally conscious technology. All Honda Marine engines exceed the highest CARB 3-Star rating to meet the rigorous California Air Resource Board’s standards.
True 5 Warranty
Honda’s True 5 Warranty is the best in the business. This transferable, non-declining warranty is the same on the first day as it is on the last.
Superior Battery Charging – More usable power
There’s always plenty of electric power with the 40hp. Honda’s innovative technology enables this engine to output nearly twice as many charging amps as the competition’s.
Center Mount Tiller – Easier control
The ergonomically designed tiller handle is longer for improved handling. Adjustments for throttle and steering friction allow easier control. Up front shift lever, PTT switch, and engine alert lamps provide added convenience.
Easy access side-mounted oil filter and oil fillers simplify maintenance, while “screw-type” valve adjusters reduce maintenance costs.
Built-In Pitot Tube
Built-in pitot tube in the gear case eliminates the need to drill holes in your boat for installation.
Meets NMEA 2000 standards – on-board connectivity
NMEA 2000 protocols allow engine data to be displayed on NMEA 2000 compliant dashboard electronics, like sonar and GPS.