When searching for a 50 hp outboard motor for sale, buyers face a wide range of choices in engine type, price, brand reliability, and mounting configuration. Whether you're powering a fishing skiff, pontoon, or small cabin cruiser, a 50 horsepower outboard offers a balanced mix of speed, fuel efficiency, and maneuverability. This guide breaks down everything you need to consider—from four-stroke vs two-stroke engines to electric start options, shaft length, and real-world pricing across new and used markets—so you can make an informed decision that matches your boat, budget, and boating style.
Why a 50 HP Outboard Motor Fits Mid-Sized Boats
A 50 horsepower outboard motor sits in the mid-range category, making it ideal for boats between 16 and 22 feet in length. It provides enough thrust to plane most aluminum fishing boats, center consoles, and smaller pontoons without overloading the transom or consuming excessive fuel. Unlike smaller 25–40 hp models, a 50 hp engine delivers better acceleration under load, handles choppy water more confidently, and supports accessories like live wells, fish finders, and trolling motors without strain 1.
This power level is especially popular among anglers, weekend cruisers, and inland lake boaters who want reliable performance without the complexity and cost of larger 75+ hp engines. Additionally, many 50 hp motors are designed with lightweight construction and compact footprints, improving weight distribution and ease of transport.
Understanding Engine Types: Four-Stroke vs Two-Stroke vs Electric
One of the first decisions when evaluating a 50 hp outboard motor for sale is choosing the engine type. Each has distinct advantages and trade-offs in maintenance, noise, emissions, and fuel economy.
Four-Stroke Engines ⚙️
Most modern 50 hp outboards are four-stroke engines due to their quiet operation, lower emissions, and improved fuel efficiency. They typically deliver smoother idle and better low-end torque, which helps boats get on plane faster. Brands like Yamaha, Mercury, Honda, and Tohatsu dominate this segment with reliable, durable designs.
- Pros: Fuel-efficient, quieter, longer service intervals, compliant with emission regulations
- Cons: Heavier than two-strokes (though newer models have reduced weight), slightly slower throttle response
For example, the Yamaha F50 and Mercury 50ELPT are both four-stroke models known for durability and ease of use in freshwater environments.
Two-Stroke Engines 🔧
Older or performance-oriented 50 hp motors may still use two-stroke technology. These engines are lighter and offer quicker acceleration but require pre-mixing oil with gasoline or rely on an oil injection system. Due to stricter environmental standards, new two-stroke sales have declined, though used models remain available.
- Pros: Lighter weight, higher power-to-weight ratio, simpler mechanics
- Cons: Higher fuel consumption, louder operation, increased emissions, harder to source parts for older models
If considering a used 50 hp 2-stroke outboard motor, inspect the carburetors, reed valves, and spark plugs carefully, as wear in these areas can lead to poor starting and rough running.
Electric Outboards ⚡
Emerging alternatives include electric 50 hp-equivalent motors, such as the Elco EP-50. While not producing 50 hp continuously, they offer peak output near that range using high-capacity lithium batteries. Ideal for eco-conscious users or those restricted by local noise/emission rules (e.g., certain lakes).
- Pros: Zero emissions, silent operation, minimal maintenance
- Cons: High upfront cost (~$9,950), limited runtime (1–3 hours at full power), heavy battery requirements, charging infrastructure needed
Electric models suit short-range applications like duck blinds, shallow marshes, or urban waterfronts where gas engines are banned.
Price Ranges: What to Expect When Buying New or Used
Pricing is a major factor when browsing 50 hp outboard motors for sale. The market spans from budget-friendly used units to premium new models with advanced features.
| Type | Average Price Range | Key Considerations |
|---|---|---|
| New Four-Stroke (e.g., Yamaha, Mercury) | $6,500 – $8,700 | Warranty included, latest tech, EFI, electric start standard |
| New Tiller-Control Models | $3,600 – $4,000 (discounted) | Sometimes sold at markdown; verify dealer legitimacy |
| Used 50 HP (4-stroke, 5–10 years old) | $2,000 – $5,500 | Inspect hours, corrosion, prop condition, title history |
| Used 2-Stroke (older models) | $1,800 – $3,800 | Risk of outdated parts, harder to maintain long-term |
| Electric Equivalent (e.g., Elco EP-50) | $9,000 – $10,000 | Batteries and charger often sold separately |
As seen in current listings, prices vary significantly based on control type (tiller vs remote), starting method (pull-start vs electric), and whether the motor includes digital gauges or fuel injection. For instance, a Mercury 50hp EFI outboard with remote mechanical controls sells around $7,700, while a discounted tiller model might be listed at $3,690 2.
New vs Used: Which Makes Sense for You?
Deciding between a new or used 50 hp outboard motor depends on your budget, usage frequency, and mechanical confidence.
Buying New ✅
Advantages include factory warranty (typically 3 years), access to the latest fuel-injected models, and peace of mind knowing the engine’s full history. New motors often come with electronic fuel injection (EFI), which improves cold starts and fuel economy compared to carbureted versions.
However, depreciation begins immediately—like a car, a new outboard loses value quickly in the first few years. Unless you plan to keep it for a decade or more, the premium may not justify the benefit unless reliability and support are critical.
Buying Used 🛒
Many boaters opt for used 50 hp motors to save thousands. A well-maintained Yamaha or Honda from 2015–2020 can offer excellent value. However, due diligence is essential:
- Check total operating hours (if equipped with a gauge)
- Look for signs of saltwater exposure (corrosion on clamps, fittings)
- Ask for service records or proof of winterization
- Verify the motor runs smoothly at idle and wide-open throttle
- Avoid engines with mismatched serial numbers or missing components
Some sellers list rebuilt or repowered units—ask what work was done and by whom. Rebuilt doesn’t always mean reliable if improper techniques were used.
Key Features That Impact Performance and Usability
Beyond horsepower, several design elements affect how a 50 hp motor performs in real-world conditions.
Shaft Length: Short vs Long (20" Standard) 📏
Most 50 hp motors come with a 20-inch “long” shaft, suitable for transoms 20–25 inches tall. Using a short shaft (15") on a deep transom causes cavitation and loss of grip. Conversely, a long shaft on a short transom risks striking the bottom in shallow water.
Always match shaft length to your boat’s transom height. Some manufacturers offer convertible kits, but these are rare in this horsepower class.
Starting System: Pull-Start vs Electric Start 🔋
Entry-level or older 50 hp motors may only have a recoil (rope) pull start. While functional, repeated pulls in cold weather become frustrating. Most modern models include electric start as standard, especially those with EFI.
If buying used, confirm the starter motor engages reliably and the battery system is compatible (usually 12V marine battery).
Control Type: Tiller vs Remote 🎮
Tiller-handle motors are simpler and cheaper, ideal for small open boats under 18 feet. Steering is direct but requires the operator to stay near the motor.
Remote-controlled models allow console mounting and helm steering, offering greater comfort and protection from weather. They require additional rigging (cables, throttle box), increasing installation cost and complexity.
Fuel Delivery: Carbureted vs EFI ⛽
Carbureted engines are less expensive and easier to repair but struggle in cold weather and altitude changes. Electronic Fuel Injection (EFI) provides consistent air-fuel mixture, better fuel economy, and smoother operation across conditions.
If you boat year-round or in variable climates, EFI is worth the investment.
Top Brands Compared: Yamaha, Mercury, Honda, Tohatsu, Suzuki
Several manufacturers produce 50 hp outboards, each with unique strengths.
Yamaha F50 🌐
Known for ruggedness and smooth power delivery, Yamaha’s 50 hp four-stroke is widely used in commercial and recreational settings. Available in tiller and remote configurations, it features dual overhead cam (DOHC) design and excellent corrosion resistance.
Mercury 50HP FourStroke 🔧
Offers strong low-end torque and responsive handling. Mercury’s Command Thrust models feature larger gear cases for improved bite in rough water. Popular among pontoon owners for their durability.
Honda BF50 ⭐
Among the lightest in its class, the Honda BF50 emphasizes fuel efficiency and quiet operation. Its simple design makes field repairs easier, appealing to DIY owners. However, some users report slower acceleration than competitors.
Tohatsu MFS50A 🏭
OEM supplier for several brands, Tohatsu builds reliable, no-frills engines. The MFS50A is noted for being the lightest 50 hp four-stroke available. Offered in black or white housing, it appeals to custom builders.
Suzuki DF50ATL5 ✨
Features a three-way cooling system and advanced ignition timing. Slightly heavier but praised for vibration control and longevity.
No single brand is universally “best”—your choice should align with availability, service network proximity, and personal priorities like weight or noise level.
Where to Buy a 50 HP Outboard Motor
You can find 50 hp outboard motors for sale through multiple channels:
- Authorized Dealerships: Best for new purchases with warranty and professional setup
- Online Marketplaces: Facebook Marketplace, Craigslist, Boattrader.com—good for used deals but require caution
- Marine Auctions & Repower Specialists: May offer package deals when replacing an old engine
- Boat Shows: Occasionally feature floor models or demo units at discounts
When buying online, insist on a video test run and detailed photos. Avoid wire transfers; use escrow services if possible. Local pickup allows inspection and operational testing.
Common Misconceptions About 50 HP Motors
Several myths persist that can mislead buyers:
- Myth: All 50 hp motors perform the same.
Reality: Torque curves, weight, and propeller compatibility greatly affect real-world speed and responsiveness. - Myth: Horsepower determines top speed directly.
Reality: Boat weight, hull shape, and prop pitch matter more. A 50 hp motor may push a light skiff to 35 mph but only 22 mph on a heavy pontoon. - Myth: Used motors are always risky.
Reality: Well-cared-for engines with regular maintenance can last 1,500+ hours.
Maintenance Tips to Extend Lifespan
To get the most from any 50 hp outboard motor, follow these practices:
- Change engine oil and filter annually or every 100 hours
- Inspect and replace spark plugs every season
- Flush with fresh water after every saltwater use
- Check fuel lines and primer bulb for cracks
- Apply anti-corrosion spray to electrical connections
- Winterize properly if storing below freezing
Regular maintenance prevents costly repairs and preserves resale value.
FAQs About 50 HP Outboard Motors
- How fast will a 50 hp outboard go? Typically 25–35 mph depending on boat weight, hull design, and propeller. Light aluminum boats may reach 35+ mph; heavier pontoons average 20–25 mph.
- Is a 50 hp motor enough for a pontoon boat? Yes, for boats under 24 feet and moderate passenger loads. Larger or heavily loaded pontoons benefit from 75+ hp.
- What size prop should I use? Start with manufacturer recommendation (often 13.25" x 15"). Adjust pitch up or down to optimize RPM within specified range (usually 5,000–6,000 rpm).
- Can I install a 50 hp motor myself? Possible with mechanical skill, but proper alignment, rigging, and safety checks are crucial. Consider professional help for remote controls or electrical systems.
- Are there 50 hp outboards with digital displays? Yes, newer EFI models from Yamaha, Mercury, and Suzuki offer digital gauges showing RPM, trim position, and warning indicators.
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