Best Small Outboard Motors for Small Boats and Inflatable Vessels
Answering the search for compact, reliable propulsion, these small outboard motors cover roughly 2 to 18 HP. They’re ideal for inflatable boats, dinghies, and light fishing craft. This guide highlights five compact options and explains who each is best for, plus practical trade-offs. If you need a lightweight, easy-to-mount engine for casual trips, start with the lightest and simplest units. For longer trips or heavier loads, consider higher horsepower models with stronger cooling and fuel efficiency.
| Product | Horsepower | Best For |
|---|---|---|
| YIYIBYUS 2.3HP 52cc | 2.3 HP | Light dinghies and small inflatables; best for occasional short trips |
| Gosangom 3.5HP | 3.5 HP | Compact boats needing moderate speed with good fuel economy |
| BJTDLLX 6HP | 6 HP | Small boats needing reliable all-around power and simple control |
| FiueStur 12HP | 12 HP | Inflatables or small boats that require stronger thrust for rougher water |
| NAZEAOB 18HP | 18 HP | Heavier small boats that need solid performance and sustained speed |
YIYIBYUS 2.3HP Outboard Motor
Best for ultra-light inflatables and small dinghies. This 2.3HP model emphasizes compact size and fuel efficiency. Its 52cc two-stroke design offers straightforward starting with non-contact electronic ignition, making it suitable for casual, short trips where weight and portability matter more than sustained speed.
Key points:
– Power: 1.7kW / 2.3HP; weight and footprint are minimal.
– Materials: Aluminum and PP construction for corrosion resistance.
– Performance: Operating range 4500–8500 RPM for responsive control.
Caution: Lower horsepower may limit performance in larger loads or rough seas; best for small boats and calm conditions.
Gosangom 3.5HP Outboard Motor
Best for portable, light-duty boats needing a bit more punch than 2.3HP units. This 3.5HP model uses a water-cooled, short-shaft design with a CDI ignition system. It’s suitable for small inflatable boats, kayaks, and dinghies where ease of use and fuel efficiency are priorities.
Key points:
– Power: 2.5kW / 3.5HP; compact but capable for small watercraft.
– Design: Lightweight aluminum alloy with water cooling for durability.
– Performance: Three forward speeds and neutral/ reverse for simple maneuvering.
Caution: Slightly heavier than the 2.3HP options; plan for mounting space and balance on lightweight craft.
BJTDLLX 6HP Outboard Motor
Best for small boats that need reliable, mid-range power with good control. The 6HP engine offers a balance of thrust and weight, featuring a water cooling system and CDI ignition. It supports 360° steering for flexible maneuvering and is suitable for fishing boats and inflatables that require stronger thrust without a larger motor.
Key points:
– Power: 6HP; solid performance for general use on small vessels.
– Features: 360° steering rotation; built-in tank option with external options.
– Durability: Cast aluminum housing with corrosion protection.
Caution: Despite robust power, it remains heavier than the smallest units; check transom suitability and alignment for mounting.
FiueStur 12HP Outboard Motor
Best for inflatable boats or small fishing craft that demand stronger propulsion in moderate water conditions. This 12HP 2-stroke motor features a durable water-cooled system and a CDI ignition, with transom fitting up to 17.3 inches. It provides quicker acceleration and higher top speed, useful for larger inflatables and heavier loads.
Key points:
– Power: 12HP; higher thrust compared to entry-level units.
– Control: 3-gear forward/neutral/reverse with tiller operation.
– Durability: Aluminum alloy with corrosion-resistant construction.
Caution: More weight and fuel consumption than smaller models; ensure fuel capacity and balance align with the boat’s weight limits.
NAZEAOB 18HP Outboard Motor
Best for heavier small boats needing sustained speed and load-carrying capability. The 18HP engine delivers strong thrust with a 4,500–5,500 RPM range and a long-shaft configuration. It uses water cooling and CDI ignition, with a sizable fuel tank capacity for longer trips. Suitable for dedicated anglers and boaters who require reliable performance in varied conditions.
Key points:
– Power: 18HP; suitable for faster travel and heavier loads.
– Features: 2-stroke design, aluminum alloy construction, long shaft, CDI ignition.
– Efficiency: 24 L / 6.34 gal fuel tank, with efficient carburetion for longer outings.
Caution: Higher power means increased fuel use and weight; check your boat’s transom height and balance before installation.
Buying Guide: How to Choose the Right Small Outboard Motor
- Boat type and load: Match horsepower to boat length, hull weight, and typical passenger/fuel load. Lighter boats benefit from 2.3–3.5HP engines, while inflatables that carry more gear may gain from 6–12HP.
- Transom height and shaft length: Short shafts fit small inflatables; long shafts support higher mounting options on larger dinghies. Check your boat’s transom height (inches) and ensure the motor’s shaft length aligns.
- Fuel efficiency vs. power needs: Smaller engines are lighter and more economical; higher HP models deliver stronger thrust but consume more fuel. Consider typical trip duration and cruising speed when choosing.
- Cooling and ignition: Water-cooled systems improve engine longevity in repeated use. CDI ignition offers reliable starts and smoother throttle response for beginners and casual users.
- Maintenance and parts availability: Aluminum housings resist corrosion, but availability of replacement parts and service should influence your choice, especially for older or lesser-known brands.
FAQ: Quick Answers For Buyers
Which small outboard motor is easiest to mount on a lightweight boat?
Models with short shafts and compact housings, such as 2.3HP and 3.5HP units, are typically easiest to mount on small inflatables and dinghies.
Is a CDI ignition system important for beginners?
Yes. CDI ignition improves starting reliability and throttle response, which is helpful for new boaters.
Should I choose a 6HP or 12HP motor for a small inflatable boat?
Choose 6HP for balanced performance and easier handling on small crafts; choose 12HP if you frequently travel in choppy water or need better speed and maneuverability.
What maintenance should I perform regularly on a small two-stroke outboard?
Regularly inspect the cooling system, fuel mix, and propeller; check for corrosion protection and ensure the CDI system and air intake are clean.
Can I use higher horsepower engines on lighter boats?
Only if the transom and overall boat design can safely support the weight and thrust. Always verify load limits and mounting compatibility.