Honda BF115JK1LDA 115HP – iST 20″ Shaft Standard Rotation

Honda BF115JK1LDA 115HP iST Digital Control

The Honda BF115JK1LDA pairs a 2.4L DOHC inline 4-cylinder engine with the iST digital system, built for mid-sized bay boats and dual-consoles in Mulmarine’s digital marine engines lineup. Fly-by-wire technology eliminates mechanical friction, giving surgical precision during technical docking maneuvers and effortless engine synchronization.

Honda’s Programmed Fuel Injection (PGM-FI) and BLAST system deliver 115 horsepower with immediate authority across the 4500-6000 RPM range. A 55-Amp alternator keeps navigation systems and stabilizing gyros powered on long transits, with Lean Burn Control and refined DOHC 16-valve engineering that minimizes vibration.

Intelligent Shift & Throttle (iST)

The iST system gives a cable-free operating experience through digital signal processing, allowing precise vessel positioning and instant response to input.

High-Displacement 2.4L DOHC Engine

The 2.4-liter block gives higher torque and smoother power delivery than standard 115HP competitors with smaller displacements, reducing mechanical stress and vibration.

Advanced BLAST Torque Technology

Honda’s BLAST technology advances ignition timing during rapid acceleration, cutting the hesitation common in four-stroke outboards for a strong hole-shot.

PGM-FI Fuel Induction System

The multi-port PGM-FI system delivers the exact fuel and air ratio for current atmospheric conditions, giving turnkey cold starts and crisp throttle response.

Lean Burn Control ECOmo

Honda’s ECOmo system adjusts the air-fuel mixture based on real-time speed and load, running a leaner mixture at cruising speed to maximize fuel economy.

High-Output 55-Amp Charging

The 55-Amp alternator (40 Amps charging) supports navigation radar, large multi-function displays, and high-draw livewell pumps without draining the starting battery.

Honda 5-Year Limited Warranty

This engine carries Honda Marine’s 5-year non-declining limited warranty. Pro Tip: enable the iST synchronization mode so multiple engines run at identical RPMs for maximum fuel efficiency.