50 HP

4-Stroke Design

World-renowned Honda quality combines proven reliability and superior fuel efficiency, with no oil mixing.


Lightest in its class

Honda’s elegant 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 BF50’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.

Non-Linear Mounting System – smoother operation

Patented non-linear rubber mounts provide smoother operation at all engine speeds.

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 50hp. 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.

Power Trim/Tilt

Allows you to trim the unit for maximum performance and handling.
Trim Range: – 4° to +16°
Tilt Range: 63°.

Easy Maintenance

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.


Type 4-Stroke SOHC, 3 Cylinder, 2 Valves/Cyl.
Displacement 808 cc (49.3 cubic inches)
Bore & Stroke 70 mm x 70 mm (2.8 x 2.8 inches)
Full Throttle RPM Range 5,500-6,000 RPM
Rated Power 50 HP @ 6,000 RPM
Cooling System Water Cooled
Fuel Delivery Programmed Fuel Injection
Ignition System MicroComputer Programmed
Starting System Electric
Exhaust Through Hub
Lubrication Wet Sump
Trim Range -4° to +16°
Tilt Range 63°


Gear Ratio 2.08:1
Gear Shift F-N-R


Alternator (Electric Start) 22-Amp (275 watt)
Battery Charging Power 17 Amps
Propeller Optional
Power Tilt NA
Power Trim & Tilt Available
Gas Assisted Tilt NA
Oil Pressure Alert Standard
Temperature Alert Standard
Rev-Limiter Standard
Speedometer Pickup Standard


Overall Width 372 mm/14.7 inches

Dry Weight

L-Type 97 kg/214 lbs.
X-Type 101 kg/223 lbs.

Transom Height

L Type 508 mm/20 inches
X Type 635 mm/25 inches

Owner’s Manuals

Serial Number Size P/N
BAZJ-1000001-1999999 Download Buy 2.72 MB 31ZW4600
BAZJ-2000001-3199999 Download Buy 3.03 MB 31ZW4603
BAZL-1000001-1999999 Download Buy 2.72 MB 31ZW4600
BAZL-2000001-3209999 Download Buy 3.03 MB 31ZW4603
BAZS-3000001-3209999 Download Buy 3.03 MB 31ZW4603
BAZS-3210001-3219999 Download Buy 3.26 MB 31ZW4604
BAZS-3220001-3229999 Download Buy 1.8 MB 31ZW4606
BAZS-3300001-3309999 Download Buy 7.41 MB 31ZW4607
BAZS-3400001-3409999 Download Buy 4.16 MB 31ZW3601
BAZS-3500001-3599999 Download Buy 4.33 MB 31ZW3602
BAZS-3600001-3699999 Download Buy 4.03 MB 31ZW3605
BAZS-3700001-9999999 Download Buy 3.51 MB 31ZW3607
BAZU-1000001-1999999 Download Buy 2.72 MB 31ZW4600
BAZU-2000001-3199999 Download Buy 3.03 MB 31ZW4603
BBEJ-1000001-1099999 Download Buy 4.75 MB 00X31ZZ46100
BBEJ-1100001-9999999 Download Buy 3.08 MB 00X31ZZ46210

Performance Test

Boat Length Prop
C-DORY 22 CRUISER 22′ – 0″ POWERTECH 11 1/4 X 13 X 3
CARIBE INFLATABLES CL14 11′ – 4″ Solas 11 x 14 x 3
CAROLINA SKIFF – V 1965 18′ – 8″ HONDA 11 1/4 X 13 X 3
CREST – 18 DL 18′ – 0″ HONDA 11 3/4 X 10 X 3
EASTCAPE CANOES CAIMEN 17 SC 17′ – 10″ Powertech 14p Custom
HEWES CRAFT – 17 SEARUNNER 16′ – 8″ HONDA 11 1/4 X 13 X 3
PARTI KRAFT – PONTOON 28′ – 0″ Honda 11 3/4 x 10 x 3
PARTI KRAFT – PONTOON 28′ – 0″ Honda 11 1/2 x 12 x 3
PARTI KRAFT – PONTOON 28′ – 0″ Solas 11.6 x 11 x 3
PARTI KRAFT – PONTOON 28′ – 0″ Solas 12.1 x 9 x 3