Honda BF140AK1XDA 140HP in White iST 25″ Shaft Standard Rotation

Honda BF140AK1XDA 140HP iST White Digital

The Honda BF140AK1XDA pairs a 2.4L DOHC inline 4-cylinder engine with the iST digital system, finished in Grand Prix White for high-transom bay boats and offshore cruisers in Mulmarine’s 4-stroke marine engines lineup. Fly-by-wire technology eliminates mechanical friction, giving surgical precision during technical docking maneuvers.

Honda’s Programmed Fuel Injection (PGM-FI) and BLAST system deliver 140 horsepower with immediate authority across the 5000-6000 RPM range. A 55-Amp alternator keeps navigation radar and multi-function displays powered on long transits, with Lean Burn Control and VTEC engineering for consistent performance.

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.

Grand Prix White Custom Aesthetic

The Grand Prix White finish matches modern fiberglass and aluminum hulls, engineered to withstand saltwater environments and UV exposure.

Tournament Class 2.4L DOHC Power

The 16-valve 2.4-liter block gives higher torque and smoother power delivery than competitors with smaller displacements, reducing mechanical stress and vibration.

VTEC High-Performance Tuning

Honda’s VTEC switches camshaft profiles at high RPM, delivering top-end punch while maintaining a high-torque, fuel-efficient low end.

Lean Burn Control ECOmo Efficiency

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.

Advanced BLAST Hole-Shot Torque

The BLAST system improves hole-shot performance by advancing ignition timing during quick throttle inputs, getting the boat on plane faster under heavy loads.

Honda 5-Year Non-Declining Warranty

This engine carries Honda Marine’s 5-year non-declining limited warranty. Pro Tip: use the iST system’s trolling mode to maintain precise low speeds during technical fishing maneuvers.