Engineered for Versatile Marine Performance
The Honda 115HP 4-Stroke Outboard utilizes a massive 2.35-liter displacement platform, delivering strong mid-range torque and dependable top-end power. Whether you are repowering a commercial workboat or outfitting a family fishing vessel, this inline 4-cylinder engine provides ultra-smooth, whisper-quiet performance. To explore more motor options for your transom, browse our full selection of 4-Stroke Outboards or check out our complete lineup of Honda Outboard Motors.
Advanced Honda Marine Technologies
-
Programmed Fuel Injection (PGM-FI): Controls fuel delivery with pinpoint accuracy for fast, turn-key starting, instant throttle response, and minimal emissions.
-
BLAST® System (Boosted Low Speed Torque): Enhances hole-shot acceleration by advancing ignition timing under hard throttle applications to get heavy boats up on plane quickly.
-
Lean Burn Control (ECOmo®): Automatically balances the air-fuel ratio during cruise conditions, delivering outstanding fuel efficiency so you can go further on every tank.
-
NMEA 2000® Connectivity: Seamlessly streams engine diagnostic data, RPM, fuel flow, and temperature directly to your existing onboard GPS or fishfinder display. For rigging and gauge compatibility questions, visit our FAQs page.
Corrosion Resistance & Heavy-Duty Build
Built to handle brutal saltwater environments, Honda features a 4-Stage Corrosion Protection System. This multi-layer finish uses an anodized aluminum base, epoxy primer coat, and acrylic topcoat, supported by multiple sacrificial anodes and a convenient freshwater flushing port. For complete coverage details on marine use, refer to our official Warranty Policy.
Technical Specifications
| Specification | Details |
| Horsepower | 115 HP @ 5500 RPM |
| Engine Type | 4-Stroke Inline 4-Cylinder (DOHC 16-Valve) |
| Displacement | 2,354 cc (144 cu in) |
| Bore x Stroke | 87 mm x 99 mm |
| Full Throttle RPM Range | 5000 – 6000 RPM |
| Fuel Delivery | Programmed Electronic Fuel Injection (PGM-FI) |
| Starting System | Electric Start |
| Cooling System | Water-Cooled with Thermostatic Control |
| Alternator Output | 55 Amp (40 Charging Amps) |
| Gear Ratio | 2.14:1 |
| Shaft Length | 25″ (XL Shaft) |
| Dry Weight | Approx. 217 kg (478 lbs) |
What’s Included in the Package
-
1x Honda 115HP 4-Stroke Outboard Engine (25″ Shaft)
-
1x Stainless Steel Propeller
-
1x Wiring Harness & Key Switch Control Panel
-
1x Multi-Function Tachometer & Trim Gauge Kit
-
1x Safety Stop Switch & Lanyard
-
1x Owner’s Manual & Service Guide
For crate packaging specifications and freight logistics, please review our Shipping & Freight Policy.
Scientific & Technical References
-
To review environmental compliance guidelines for marine outboards, visit the California Air Resources Board (CARB) Marine Engine Regulations.
-
For detailed technical standards on electronic marine injection systems, consult the Society of Automotive Engineers (SAE) Marine Standards.
Frequently Asked Questions (FAQs)
1. Is a 25-inch shaft length suitable for my boat?
A 25″ (XL) shaft is designed for boats with a transom height of approximately 25 inches, commonly found on deeper V-hulls, center consoles, pontoons, and offshore fishing boats.
2. Does this engine feature a high-output alternator for onboard battery charging?
Yes. The engine includes a 55-amp alternator supplying up to 40 charging amps, ensuring your electronics, navigation lights, and livewells remain continuously powered.
3. What fuel grade is recommended for the Honda 115HP outboard?
It is optimized to run on standard 87 octane unleaded gasoline. Using ethanol-free fuel or adding marine fuel stabilizer is recommended to prevent water absorption in marine environments.
4. What should I do if my shipment arrives with exterior transit damage?
All motor shipments are fully insured during transport. In the event of transit damage, inspect the crate and contact us immediately via our Refund & Returns Policy or reach out through our Contact Us page.
Disclaimer: Engine installation and transom mounting should always be performed or verified by a qualified marine technician. Actual boat speeds, hole-shot performance, and fuel economy depend on overall hull design, propeller pitch selection, and total vessel weight according to the manufacturer’s operational manual. Honda 115HP 4-Stroke Outboard
Reviews
There are no reviews yet.