Honda BF115DK1LC 115HP – Four Stroke 20-Inch Shaft

Honda BF115DK1LC 115HP 4-Stroke DOHC

The Honda BF115DK1LC 115HP is a high-torque powerhouse featuring a 2.4L DOHC inline 4-cylinder architecture, delivering the highest displacement in the 115HP class. This 20-inch long shaft model is specifically designed for heavy mid-sized bay boats, dual consoles, and offshore skiffs requiring high-torque marine propulsion systems for consistent performance under load. Its 16-valve DOHC design helps support smooth power delivery and reduced vibration, providing a refined operating experience that 4-stroke boaters have come to expect from Honda’s Japanese engineering.

Operational peak performance is managed through the PGM-FI system and Honda’s BLAST technology, ensuring that 115 horsepower is delivered with immediate hole-shot authority. The BF115DK1LC features a specialized 2.14:1 gear ratio and a high-output 55-amp alternator, making it the ideal choice for vessels with high-draw electronics and multi-battery systems. US boaters consistently choose this 2.4L model for its mid-range torque and the durability of its wet sump lubrication system, ensuring long-term reliability in both fresh and saltwater environments.

2.4L I-4 Displacement

The BF115DK1LC utilizes a large 2.4-liter block to provide significantly higher torque and smoother power delivery than standard 115HP competitors with smaller displacements. This balanced architecture reduces mechanical stress and vibration throughout the vessel while providing the torque needed for rapid response under heavy loads. Operators may notice a refined four-stroke quietness with the mid-range pulling power essential for navigating unpredictable coastal inlets or large lake environments.

DOHC 16-Valve Engineering

The Double Overhead Cam (DOHC) 16-valve design allows for precise valve control and optimized air intake, resulting in superior thermal efficiency across the entire RPM band. This valvetrain configuration helps support that the 115HP engine maintains peak performance during long cruises while providing a smooth idle for technical docking maneuvers. Owners benefit from a more responsive and fuel-efficient engine that is built to handle the rigors of high-hour professional use.

BLAST Low Speed Torque System

Honda’s Boosted Low Speed Torque (BLAST) technology proactively advances ignition timing during rapid acceleration to get the boat on plane faster. This system eliminates the “dead zone” often found in 4-stroke outboards, providing a hole-shot that rivals many 2-stroke competitors. Captains gain improved vessel authority, allowing them to carry heavier loads or pull skiers with the confidence of immediate, high-torque thrust from a dead stop even on heavier fiberglass hulls.

High-Output 55-Amp Alternator

The BF115DK1LC features a powerful 55-amp alternator (40 amps charging) that provides the highest electrical output in its class to keep all onboard electronics fully powered. This capacity easily supports modern navigation radar, large multi-function displays, and high-draw livewell pumps without draining the primary starting battery. Owners gain the confidence to run complex digital networks throughout the day, ensuring all critical safety and fish-finding gear remains operational.

NMEA 2000 Digital Networking

This 115HP outboard is fully NMEA 2000 certified, allowing for a digital connection between the engine and your preferred helm electronics. This integration displays critical engine telemetry, including fuel flow, RPM, and temperature, directly on your GPS or multi-function display for real-time monitoring. This can provide a higher level of awareness and vessel management, allowing for precise fuel monitoring and proactive maintenance tracking during long cruises.

2.14:1 Performance Gear Ratio

The specialized 2.14:1 gear ratio provides the necessary mechanical leverage to push technical, high-drag hulls onto plane efficiently without engine strain. This configuration helps support the motor can maintain a secure grip on the water surface, providing superior stability and control during strong maneuvers in tidal currents or lake chop. You gain the mechanical advantage of a large-displacement powerhead optimized for consistent pulling power and high-speed efficiency across the entire 4500-6000 RPM range.

Honda 5-Year Factory Warranty

Your investment is protected by Honda Marine’s high-pressure 5-year non-declining limited warranty, which remains consistent from the first day to the last. This warranty reflects the confidence Honda has in their Japanese-engineered components and provides US boaters with peace of mind during every launch.Maintenance note: Follow the manufacturer’s service procedures and lubrication specifications for the engine and gearcase.