Honda Marine BF115A Outboard Motor

The Honda BF115 iST® combines Honda’s legendary reliability with an advanced Intelligent Shift & Throttle (iST®) Drive-by-Wire system for effortless control, smoother operation, and outstanding fuel efficiency. Powered by a 2,354 cc DOHC 4-cylinder engine, the BF115 iST® delivers strong mid-range torque, responsive acceleration, and premium boating technology for fishing, cruising, and commercial applications.

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Key Features

Advanced Performance

• Powerful 115 HP DOHC 4-cylinder engine
• Large 2,354 cc (144 cu. in.) displacement
• Based on Honda’s proven Accord engine platform
• BLAST® (Boosted Low Speed Torque) dramatically improves hole-shot acceleration
• Lean Burn Control® improves fuel economy by up to 19% at cruising speeds
• Multi-Port Programmed Fuel Injection (PGM-FI®) provides instant starts, smooth throttle response, and maximum efficiency
• Twin counter-rotating balance shafts deliver exceptionally smooth operation
• LAF (Linear Air Fuel) and Knock Sensors continuously optimize fuel delivery and ignition timing
• Large displacement design delivers exceptional torque throughout the RPM range
• Advanced Engine Command Module monitors 18 engine sensors for maximum performance

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Honda iST® Drive-by-Wire

Honda’s Intelligent Shift & Throttle (iST®) system delivers premium electronic engine control with effortless operation.

Features include:

• Electronic shift and throttle control
• Plug-and-play installation
• Multi-engine compatibility
• Dual control station capability
• Precision throttle adjustment
• Enhanced low-speed docking control
• Virtual positioning and anchoring
• Return-to-port capability
• Simple, intuitive user interface

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Reliability & Durability

Honda engineered the BF115 iST® for years of dependable performance.

Engine Protection

• Engine Alert System monitors:
  • Overheating
  • Low oil pressure
  • Water in fuel
  • Battery condition
  • Over-revving
  • Critical engine functions

Superior Corrosion Protection

• Double-Sealed corrosion-resistant paint process
• Stainless steel steering arm, tilt tube, and shafts
• Painted internal cooling passages
• Waterproof electrical connectors
• Fresh-water flush port

Built for Long Service Life

• Three-stage cooling system
• Automotive-grade Honda engineering
• Heavy-duty stainless steel components
• Honda 5-Year Warranty

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Convenience & Ease of Use

• NMEA 2000® compatibility for GPS, sonar, and multifunction displays
• High-output 55A alternator with 40A charging capacity
• Optional Variable Speed Trolling (650–900 RPM in 50 RPM increments)
• Front-mounted oil filter for quick maintenance
• Screw-type valve adjustment reduces maintenance costs
• Optional built-in Pitot tube for direct speedometer connection

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Engine Specifications

Specification	Details
Engine Type	4-Stroke DOHC, 4 Cylinders / 16 Valves
Displacement	2,354 cc (144 cu. in.)
Horsepower	115 HP @ 5,250 RPM
Full Throttle Range	4,500–6,000 RPM
Cooling System	Water Cooled
Fuel System	Multi-Port Programmed Fuel Injection (PGM-FI®)
Ignition	Microcomputer Programmed
Starting System	Electric
Exhaust	Through Hub
Recommended Fuel	Unleaded Gasoline (Minimum 86 Octane)

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Drive System

Specification	Details
Gear Ratio	2.14:1
Gear Shift	Forward • Neutral • Reverse

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Equipment

Feature	Availability
Alternator	55A (40A Charging)
BLAST®	Standard
Lean Burn Control®	Standard
iST® (Drive-by-Wire)	Standard
Troll Control	Standard
Trim Support	Standard
Cruise Control	Standard
Automatic Tilt	Standard
Tilt Limit Setting	Standard
Power Trim & Tilt	Standard
VTEC®	Not Available
Propeller	Optional

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Dimensions

Measurement	Specification
Overall Width	618 mm (24 in.)
Long Shaft (L)	508 mm (20 in.)
Extra Long Shaft (X)	635 mm (25 in.)

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Weight

Model	Dry Weight
L-Type	221 kg (487 lbs.)
X-Type	224 kg (494 lbs.)

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Standard Features

• Intelligent Shift & Throttle (iST®) Drive-by-Wire
• BLAST® Low-Speed Torque System
• Lean Burn Control®
• Multi-Port PGM-FI Fuel Injection
• 55A High-Output Alternator
• Power Trim & Tilt
• Automatic Tilt
• Cruise Control
• Trim Support
• Troll Control
• NMEA 2000® Compatibility
• Engine Alert Monitoring
• Fresh-Water Flush Port
• Advanced Corrosion Protection
• Honda 5-Year Warranty

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Ideal Applications

The Honda BF115 iST® is ideal for:

• Offshore fishing boats
• Bay boats
• Aluminum fishing boats
• Family runabouts
• Pontoon boats
• Commercial vessels
• Multi-engine installations
• Cruising boats

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Why Choose the Honda BF115 iST®?

The Honda BF115 iST® delivers the perfect combination of 115 horsepower, advanced Drive-by-Wire technology, BLAST® acceleration, Lean Burn® fuel efficiency, and Honda’s renowned reliability. With premium electronic controls, intelligent engine management, and commercial-grade durability, it provides smooth, responsive performance for both recreational and professional boaters.