
Honda BF50DK4LRTC 50HP – Four Stroke 20-Inch Remote
The Honda BF50DK4LRTC pairs a 97kg lightweight build with an 808cc three-cylinder powerhead, built for aluminum fishing skiffs on a 20-inch shaft with power trim.
- 97kg dry weight preserves boat buoyancy
- 808cc engine generates 50hp output
- Power trim facilitates fast running clearance
- 22A alternator maintains continuous battery charging
Honda BF50DK4LRTC 50HP SOHC
The Honda BF50DK4LRTC is a 50HP SOHC outboard designed for marine offshore and coastal applications across the United States. Featuring a high-displacement 808cc three-cylinder architecture and a manageable dry weight of 214 lbs, this engine delivers an power-to-weight ratio for mid-sized vessels. The 20-inch long shaft configuration is perfectly matched for deep-V center consoles and aluminum fishing hulls. Our dependable outboard propulsion systems provide the mechanical reliability necessary for rigorous daily maritime operations.
Peak operational performance for this Honda 50HP is achieved within the 5500 to 6000 RPM range, utilizing advanced PGM-FI for superior thermal efficiency. The robust 2.08:1 gear ratio translates the torque curve directly into rapid hole-shot acceleration and efficient hull planing. Built with world-class Japanese engineering, this corrosion-resistant marine engine incorporates excellent vibration dampening for a quiet ride across choppy coastal waters.
SOHC Engine Architecture
The inline three-cylinder SOHC design maximizes combustion efficiency while reducing overall engine bulk for US boaters. This translates into reliable low-end torque that mariners depend on when hauling heavy fishing gear through dense coastal marshlands and strong tidal currents.
PGM-FI Induction System
Honda’s Programmed Fuel Injection continuously monitors atmospheric variables to deliver the appropriate air-fuel ratio. This is designed to support instant throttle response and prevents engine bogging during rapid acceleration scenarios while navigating tricky channels in the American saltwater marine environment.
Long Shaft Propulsion
The 20-inch shaft helps support deep propeller immersion on standard transoms to prevent unwanted cavitation in choppy seas. Paired with the robust gear ratio, it maximizes hydrodynamic grip to push heavily loaded pontoons and offshore skiffs across coastal bay waters.
CARB Emissions Compliance
This 50HP outboard achieves a rigorous C.A.R.B. 3-Star emissions rating, making it an environmentally responsible choice for US waterways. This ultra-low emissions certification helps support clean operation without sacrificing the torque required for professional and recreational maritime applications.
Center Console Application
This remote mechanical outboard is a practical power solution for mid-sized aluminum boats and fiberglass center consoles. It provides the sustained high-end thrust needed for navigating difficult coastal tidal flows while remaining fuel efficient during long offshore transits.
Maintenance & Longevity
Regular inspection of the 2.1L wet sump lubrication system is critical for maintaining internal engine tolerances over the years. Always flush the cooling system with fresh water after every saltwater excursion to prevent mineral scale buildup.Maintenance note: Follow the manufacturer’s service procedures and lubrication specifications for the engine and gearcase.
Product Specifications
HONDA BF50DK4LRTC Full Specs
| Engine type | 3-Cylinder / 6-Valve / SOHC |
|---|---|
| Displacement | 808cc |
| Bore x stroke | 70 x 70 mm (2.8 x 2.8 in) |
| Horsepower | 50hp at 5750 RPM |
| Full-throttle rpm range | 5500 - 6000 RPM |
| Compression ratio | 9.4:1 |
| Fuel induction | Programmed Fuel Injection (PGM-FI) |
| Recommended fuel | Octane 86 |
| Ignition | Microcomputer Programmed |
| Alternator output | 22 Amp |
| Gear ratio | 2.08:1 |
| Gear shift | Forward, Neutral, Reverse |
| Shaft length | 20 inch |
| Dry weight | 214 lbs (97 kg) |
| Controls | Mechanical |
| Steering | Remote |
| Trim and tilt | Power Trim & Tilt |
| Exhaust | Through Propeller |
| Cooling system | Water Cooled |
| Lubrication | Wet Sump |
| Oil capacity | 2.1L (2.2 Quarts) with filter |
| Emissions rating | C.A.R.B. 3-Star |
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