Looking for a reliable long shaft outboard motor to power boats with deeper transoms or deeper-running needs? This guide highlights five 18HP, 246cc long-shaft options that balance power, durability, and endurance. It’s ideal for anglers, small boat tours, and recreational users who value steady handling and fuel efficiency. Each choice is explained with who it’s best for, why it stands out, and a practical caveat to consider before you buy. The following table summarizes the key details to help you compare at a glance.
| Product | Engine Type | Fuel Tank | |
|---|---|---|---|
| BJTDLLX 2 Stroke 18HP | 2-stroke, 18HP | 6.34 gal | Fast propulsion, long-range trips |
| RYIRSHOH 2 Stroke 18HP | 2-stroke, 18HP | Large capacity tank | Three-gear control, flexible cruising |
| NAZEAOB 2 Stroke 18HP | 2-stroke, 18HP | Large capacity tank | Heavy loads up to 2,204 lb |
| awolsrgiop 2 Stroke 18HP | 2-stroke, 18HP | 6.34 gal | Durable, stable cruising |
| YYHGTRD 2 Stroke 18HP | 2-stroke, 18HP | 6.34 gal | Strong power for quick starts |
BJTDLLX 18HP Long Shaft Outboard Motor
This long-shaft 2-stroke engine delivers 18HP within a 4500–5500 RPM range. It uses a 6.34-gallon fuel capacity and a water cooling system for extended runs. The design emphasizes a robust aluminum alloy build and a 20-inch anti-slip handle for easy manual starting and control.
Best for: Anglers and boaters who need solid acceleration and capable endurance on longer trips. The long shaft helps reach deeper water lines and improves stern clearance.
Caution: Being a 2-stroke design, it generally requires fuel/oil mixing and regular maintenance to sustain peak performance.
RYIRSHOH 18HP Long Shaft Outboard
This 18HP motor uses a corrosion-resistant aluminum alloy and offers a three-gear setup with forward, neutral, and reverse. It features a streamlined three-blade propeller and a 4500–5500 RPM operating window for efficient mid-range speeds on both freshwater and saltwater boats.
Best for: Boat owners seeking versatile control and good maneuverability in mixed water environments. It’s particularly suitable for small open boats where precise speed changes matter.
Caution: While the gearbox offers flexible control, real-world speeds can vary with load and water conditions.
NAZEAOB 18HP Long Shaft Outboard
This 2-stroke engine offers corrosion-resistant aluminium alloy construction and a three-gear system (F-N-R) with a 4,500–5,500 RPM range. It highlights a high load capacity up to 2,204 pounds and maintains efficiency with a large fuel tank.
Best for: Users who regularly carry heavier loads or cooler water conditions where added durability is beneficial.
Caution: Higher payloads reduce speed; plan trips with expected weight in mind.
awolsrgiop 18HP Long Shaft Outboard
Constructed from durable aluminum alloy, this 18HP motor is designed for stability with a maximum load of 2,204 pounds. It features a three-blade propeller and a stepless speed control with constant-speed cruising for smoother handling on longer passages.
Best for: Boaters who value steady cruising and predictable throttle response, especially on choppy water where stability matters.
Caution: As a two-stroke, fuel management and emissions are considerations for prolonged use.
YYHGTRD Outboard 18HP Long Shaft
This 2-stroke 18HP engine offers a large-capacity fuel tank (6.34 gallons) and a strong 4500–5500 RPM range. It emphasizes a robust aluminum alloy build and a three-gear system for flexible control. The anti-swirl plate helps reduce wave turbulence, aiding dry clothing.
Best for: Small-to-midsized boats that need efficient long-range performance with minimal hull spray and improved stability at cruising speeds.
Caution: Heavier loads slow the vessel more noticeably, so load planning is important for speed maintenance.
Buying Guide: Key Considerations For Long Shaft 18HP Outboards
- Engine type and fuel: All five options are 2-stroke, which typically provide strong power-to-weight but require fuel/oil mixing and more frequent maintenance compared to 4-stroke engines. Consider your tolerance for routine care and fuel availability.
- Long shaft suitability: A true long shaft (around 20 inches) helps boats with deeper transoms and longer keel lines. Match shaft length to your boat’s transom height to prevent cavitation and ensure efficient propeller immersion.
- Gear system: Forward, neutral, and reverse gear with variable speeds offer different navigation styles. Three-gear options enable better control in varying water conditions and docking scenarios.
- Fuel capacity and endurance: Larger tanks (6.34 gallons or more) extend cruising range, which is advantageous for anglers and explorers. Plan for fuel availability on long trips.
- Materials and corrosion resistance: Aluminium alloy construction provides durability in freshwater and saltwater. Consider environments you frequent to pick the most corrosion-resistant option.
- Load capacity: Heavier boats or gear reduce speed. If you regularly carry loads near the maximum rating, choose a model designed for higher payloads or plan lighter loads on longer trips.
- Maintenance and parts availability: Check compatibility with local service options and ease of obtaining consumables, especially for 2-stroke engines where oil mixtures and tune-ups are common.
Frequently Asked Questions
- What is a long shaft outboard motor?
A long shaft outboard motor has a taller mounting shaft (typically around 20 inches) to reach deeper water and provide clearer propeller immersion for boats with higher transoms.
- Are 2-stroke engines suitable for saltwater use?
Yes, with proper corrosion protection and maintenance, but 2-strokes require careful fuel/oil mixing and more frequent servicing in salty environments.
- What should I consider before buying a 18HP long shaft?
Consider boat transom height, typical load, cruising speed needs, fuel capacity, and whether you prefer stepless throttle or discrete gear changes.
- How important is the fuel tank size?
Fuel capacity affects cruising range. Larger tanks are beneficial for long trips or distant fishing spots, while smaller tanks suit short, frequent runs.
- Can these motors handle saltwater?
Most long-shaft models use corrosion-resistant aluminium alloys, suitable for saltwater with proper rinsing and maintenance after each use.
- Is a 4-stroke option better than a 2-stroke for beginners?
4-stroke engines generally require less maintenance and are quieter, but for raw power and lighter weight, a 2-stroke can be advantageous in certain boats and uses.