Best 20hp Outboard In August 2025

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Are you an enthusiast of Best 20hp Outboard? If so, you definitely want to check out the following top 10 Best 20hp Outboard.

To help you in your search, we have completed this list of the Best 20hp Outboard.

Top Rated Best 20hp Outboard Of 2025

Rank	Product Name	Score
1	PrimeShield Outboard Motor Cover, Waterproof Boat Motor Covers, 600D Heavy Duty Motor Hood Buy Now	9.7 Buy Now
2	Caltric Ignition Coils for Mercury Outboard 20Hp 20-Hp 20 Hp Engine 1986-20062-Pack Buy Now	9.5 Buy Now
3	Boat Motor Water Pump Impeller 19210-ZW9-A32 for Honda 4 Stroke 8hp 9.9hp 15hp Buy Now	9.1 Buy Now
4	SouthMarine 47-89982 47-65958 18-3052 Outboard Parts Impeller for Mercury 20hp Outboard Motors Buy Now	8.8 Buy Now
5	SouthMarine Outboard Water Pump Impeller 334-65021-0 18-8921 for Tohatsu Nissan 9.9HP 15HP 18HP Buy Now	8.6 Buy Now
6	Starter Mercury Mariner Marine Outboard Engines 50-893889T 50-8M0033984 50-90983A 50-90983A1 50-90983T1 Buy Now	8.3 Buy Now
7	20HP 25HP OEM Yamaha Outboard Water Pump Impeller Kit Replacement Sierra 18-3431 6L2-W0078-00 Buy Now	8.1 Buy Now
8	Minireen Outboard Trim Relay Assy for Yamaha Outboard Motors 4 Stroke Engine F Buy Now	7.8 Buy Now
9	LucaSng New Carburetor for Yamaha F20A F25A 20HP 25HP 4-Stroke Outboards Replaces 65W-14901-10 Buy Now	7.5 Buy Now
10	New Starter Replacement For Evinrude Johnson 20HP 25HP 30HP 40HP 277432 278232 3292133 Buy Now	7.2 Buy Now

1. PrimeShield Outboard Motor Cover, Waterproof Boat Motor Covers, 600D Heavy Duty Motor Hood

• Waterproof performance: the boat motor cover is made of 600d polyester fabric with a waterproof pu coating and an anti-uv coating, which protects your boat engine against damage from sun, wind, dust, and other natural elements...always keeping it in good condition. this 600d engine cover is also cold-resistant down to -68 fahrenheit to protect your boat motor in the win...
• Size & fit: 24"(d) x 13"(w) x 18"(h). heavy duty waterproof outboard motor cover protects boat motors up to 20 hp. fits most brands like mercury, yamaha, honda, suzuki, nissan.
• Uv protected: this boat motor cover has double line stitching and high-density bound seams for great durability. it comes with anti-ultraviolet sun and heat protection, easy to withstand sunlight, and keeps the cover new and clean.
• All primeshield products carry a one-year warranty, please be assured. if you have any problem or question, simply contact our customer service team. in order to choose the right size cover, please determine the size of your outboard motor first.
• Secure quick release system: the elastic cord around the bottom hem ensures a tight fit to provide your motor with 360 degrees of all-around protection. no more worry about your motor cover will blow away in a strong wind!

2. Caltric Ignition Coils for Mercury Outboard 20Hp 20-Hp 20 Hp Engine 1986-20062-Pack

3. Boat Motor Water Pump Impeller 19210-ZW9-A32 for Honda 4 Stroke 8hp 9.9hp 15hp

• Depth /height/width :14.80mm37/64"
• Internal shaft insert /hub diameter : 16.00mm5/8"
• Brass hub / insert
• Number of blades: 6
• Outer /external impeller overall diameter: 45.46mm51/64"

4. SouthMarine 47-89982 47-65958 18-3052 Outboard Parts Impeller for Mercury 20hp Outboard Motors

• Number of blades: 6, brass hub
• Net weight: 30g
• Height: 18.76mm(47/64")
• External impeller overall diameter: 51.41mm(2 1/32")
• Internal shaft insert diameter: 15.92mm(5/8")

5. SouthMarine Outboard Water Pump Impeller 334-65021-0 18-8921 for Tohatsu Nissan 9.9HP 15HP 18HP

• Net weight: 12g
• Number of blades: 8, plastic hub
• External impeller overall diameter: 41.11mm(1 5/8")
• Internal shaft insert diameter: 13.88mm(35/64")
• Height: 23.51mm(59/64)

6. Starter Mercury Mariner Marine Outboard Engines 50-893889T 50-8M0033984 50-90983A 50-90983A1

• Please verify this is the right part number before ordering
• New aftermarket part (not rebuilt/refurbished/repurposed)

7. 20HP 25HP OEM Yamaha Outboard Water Pump Impeller Kit Replacement Sierra 18-3431 6L2-W0078-00

• Ship from usa.fast shipping & easy installation. change your water pump parts,keep a spare in the toughest marine environment with chemical resistant neoprene impeller.
• Extremely high quality metal alloys and modern neoprene.
• Complete kit includes: full power plus neoprene impeller, wear plate, insert cup, "o"- ring, install bolts, key
• Ship from usa. fast shipping and easy installation.keep a spare in the toughest marine environment with chemical resistant neoprene impeller.
• Fits yamaha 6l2-w0078-00 20/25hp sierra 18-3431.

8. Minireen Outboard Trim Relay Assy for Yamaha Outboard Motors 4 Stroke Engine F

• Fit yamaha outboard relay assy 63p-81950-00-00
• 12 month warranty! for any questions or inquiry, please feel free to contact us via buyer message.
• This is a new aftermarket/replacement starter trim relay assy (electrical 2) for most yamaha outboard models f 20, 30, 40, 50, 60, 70, 75, 80, 90, 100, 115, 150, 200, 225, 250 hp, fl 115, 150, 200, 225, 250 hp
• Replace yamaha outboard part number: # 63p-81950-00-00 ( 2pins ) (please check oem part number before purchase!)
• Fit yamaha outboard models 4 strokes

9. LucaSng New Carburetor for Yamaha F20A F25A 20HP 25HP 4-Stroke Outboards Replaces 65W-14901-10

• May fits mercury outboard part number: 3329-883314t03. but make sure you can install it.
• Fits yamaha outboards f25elhx f25elrx f25eshx f25mlhx f25mshx f25tlrx f25elhy f25elry f25eshy f25mlhy f25mshy f25tlry and so on.
• Fits parsun outboard f20, f25 horsepower (new model: 4 strokes). also suitable for modification to increase outboards' horsepower to f25.
• Replaces carb part no.: 65w-14901-00 65w-14901-10 65w-14901-11 65w-14901-12
• High performance guarantees easy boating.

10. New Starter Replacement For Evinrude Johnson 20HP 25HP 30HP 40HP 277432 278232 3292133

• United technologies design - you may be replacing an original delco or prestolite version part may differ in appearance however, fit and function remain the same.
• All items tested for reliability, durability and performance
• Engineered to meet or exceed oem specifications
• Brand new - manufactured with new premium quality components
• See product description for fitment chart