Best 115 Horsepower Outboard Motors for Reliable Boat Power
Answering the main question: if you’re seeking dependable outboard power around 115 HP or compatible range, these compact, two-stroke and four-stroke engines offer solid performance for small to mid-sized boats. This guide highlights five suitable models, focusing on long- and short-shaft configurations, CDI ignition, water cooling, and durable aluminum construction. Ideal buyers include anglers needing quick planing and cruise capability, boaters with lightweight craft, and anyone upgrading from smaller motors. Below is a quick comparison table for the five selected models.
| Product | Brand | Horsepower | shaft type | Key feature |
|---|---|---|---|---|
| BJTDLLX 18HP Long Shaft | BJTDLLX | 18 HP | Long | Robust cooling and CDI ignition |
| NAZEAOB 18HP Long Shaft | NAZEAOB | 18 HP | Long | Strong aluminium shell, high load capacity |
| FXEIPOL 9HP | FXEIPOL | 9 HP | Std / short | Balanced power, lightweight |
| BJTDLLX 12HP Short Shaft | BJTDLLX | 12 HP | Short | Water cooling, easy handling |
| CBHFMLJD 4HP | Cbhfmljd | 4 HP | Short | Compact trolling-capability |
BJTDLLX 18HP Long Shaft Outboard Motor
The 2-stroke 18HP long-shaft engine delivers 4500–5500 RPM for strong planing and efficient cruising. A large 6.34-gallon fuel tank supports longer trips, while water cooling and multiple cooling holes provide heat dissipation to prevent overheating during extended use. Best for boats requiring reliable mid-range power and longer endurance, such as small fishing boats or dinghies.
Who it’s best for: boaters needing robust power and extended running time in a long-shaft configuration. Why chosen: solid aluminum construction, CDI ignition, and user-friendly manual start with a 20-inch anti-slip handle. Caution: as a 2-stroke engine, fuel mix and maintenance are essential for longevity.
NAZEAOB 18HP Long Shaft Outboard Motor
This 2-stroke 18HP motor operates at 4,500–5,500 RPM and features a durable aluminum alloy build with water cooling. It supports higher load-bearing capacity, up to about 2,204 pounds, making it suitable for heavier small craft. Best for anglers and day-trippers who need reliable power and steadier performance under load.
Who it’s best for: boaters prioritizing load capacity and durability in a long-shaft model. Why chosen: corrosion-resistant design and strong RPM range. Caution: heavier loads slow down top speed, so plan payload and speed expectations accordingly.
FXEIPOL 9HP Outboard Motor
The FXEIPOL 9HP four-stroke engine delivers solid power with 224cc displacement, offering a balance of performance and efficiency. It features tilt functionality, 360° rotation, and CDI ignition with a reverse capability via 180° rotation. Best for inflatables, canoes, or kayaks that require reliable, compact propulsion with straightforward handling.
Who it’s best for: smaller boats needing dependable four-stroke reliability in a compact package. Why chosen: lightweight design, efficient fuel use, and practical reverse control. Caution: performance depends on boat weight and balance; ensure proper setup for optimal speed.
BJTDLLX Short Shaft 12HP Outboard Motor
The 12HP short-shaft motor uses a 2-stroke design with water cooling and a CDI ignition system. It provides 661–1763 pounds of thrust and speeds from 8–30 km/h, ideal for compact, inflatable, or small fiberglass boats. Best for quick-tilt installations and easy, portable propulsion for small vessels.
Who it’s best for: owners of small craft needing compact, reliable power with easy install and basic cruising. Why chosen: strong thrust for its size and straightforward maintenance. Caution: two-stroke fuel management is essential for optimal reliability and emissions.
4HP 4-Stroke Outboard Motor
This 4-stroke 52cc engine offers up to 5000 RPM, with a compact footprint ideal for tiny boats or as a backup motor. It features 360-degree steering and a clutch control for easy handling. Best for ultra-light craft and as an emergency or auxiliary engine.
Who it’s best for: boaters needing a small backup motor or trolling capability for minimal craft. Why chosen: quiet operation relative to two-stroke options and simple manual start. Caution: lower horsepower means slower top speed and limited load handling.
Buying Guide: Key Considerations For Choosing An Outboard Motor
- Boat size and weight: Match horsepower and shaft length to vessel weight and length. A long shaft suits deeper hulls, while short shafts fit smaller craft.
- Fuel type and maintenance: Two-stroke engines offer higher power-to-weight but require oil mixes and more maintenance; four-stroke engines are typically cleaner and easier to operate long-term.
- Cooling system: Water-cooled engines provide better heat management for longer operation; air-cooled designs are simpler but may run hotter in extended use.
- Starting method and ignition: CDI ignition systems simplify starting; ensure you understand pull-cord or electric-start options suitable for your setup.
- Load and efficiency: Heavier loads reduce speed; consider maximum payload vs. propulsion needs for your typical trips.
- Durability and materials: Aluminum alloy construction resists corrosion; check for rust-proof and reinforced components for marine environments.
- Installation and accessories: Look for easy-to-install kits, mounting hardware, and compatibility with your boat’s transom and controls.
- Fuel efficiency and noise: Four-stroke engines generally offer smoother operation and quieter performance compared to some two-stroke options.
Comparative Quick Take
- Best for power and endurance: BJTDLLX 18HP Long Shaft
- Better for load-heavy small boats: NAZEAOB 18HP Long Shaft
- Best compact four-stroke option: FXEIPOL 9HP
- Choose this if you need a lightweight, space-saving 12HP option: BJTDLLX Short Shaft
- A practical ultra-compact backup: 4HP Outboard Motor
Frequently Asked Questions
- What shaft length should I choose?
Long shafts are better for boats with deeper transoms or higher mounting points; short shafts fit lighter, smaller boats or sheltered storage.
- Are two-stroke engines more difficult to maintain?
Two-stroke engines can require more frequent fuel/oil mixing and closer attention to fuel quality, but they offer strong power-to-weight advantages.
- Is a four-stroke engine quieter?
In many cases, four-stroke engines run more quietly and with steadier performance, though specific noise depends on model and mounting.
- What maintenance basics should I perform?
Regularly check cooling systems, spark plugs or CDI ignition components, propeller, mounting hardware, and fuel lines. Use fresh fuel and proper oil mixtures where applicable.
- Can I use any motor on any boat?
Always verify compatibility with your boat’s transom, weight ratings, and mounting requirements. Improper fit can affect performance and safety.
- What is the best option for a small inflatable?
A compact, lightweight engine like FXEIPOL 9HP or BJTDLLX 12HP short shaft is typically suitable, balancing power with portability.