The Mercury portable 20 HP EFI outboard motor develops powerful low end torque to plane your boat with ease. The 20 HP Mercury outboard engine intake manifold design provides you the fast acceleration you need to move across the water quickly to your next destination. It is the perfect combination of portable power for your boating needs.
The 111 lb. Mercury 20EH model is an electric start outboard with Electronic Fuel Injection, 15 inch shaft and includes manual tilt, a heavy-duty transom bracket, vibration-absorbing wishbone mounts, and a multi-function tiller handle. Legendary Mercury reliability, fuel economy and a 3-year warranty
Additional information
| Horsepower | 20 HP |
|---|---|
| Shaft Length | 15″ (Short) |
| Starter Type | Electric |
| Tilt & Trim | Manual |
FEATURES
- Large Displacement Powerhead (351cc)
- Electric Start + 12V 138W 12A Alternator
- Thru-Cowl Backup Manual Start
- Digital CD Ignition with Spark Advance
- Tuned Intake for Quick Acceleration
- High Grade Marine Alloy Construction
- Stainless Steel Water Pump Housing
- Zinc Coated Water Passages
- Rated for Saltwater Use
- Sacrificial Zinc Anodes and Trim Tab
- Tiller Integrated F-N-R Gear Shifting
- Adjustable Steering Tension Control
- Twist-Grip Throttle with Tension Control
- Thermostat Controlled Water Cooling
- Auto Ratchet Tilt (6 manual trim positions)
- Shallow Water Drive
- Quiet Through-Propeller-Hub Exhaust
- “Wishbone” Mount for Reduced Vibration
- 3.2 Gallon Fuel Tank and Fuel Line
- Easy Maintenance Canister Oil Filter
- Start-In-Gear Protection
- Low Oil Pressure Warning Indicator
- ESG Over-Rev Protection
- Safety Lanyard Stop Switch
- Owner’s Manual
- Mercury Marine 3-Year Warranty
SPECS
| MODEL | 20 HP EFI 20EH |
|---|---|
| MODEL YEAR | 2021 |
| SKU | 20EH-21EFI |
| WEIGHT | 111.0 lb |
| MANUFACTURER | Mercury |
| COUNTRY OF MANUFACTURE | Japan |
| HORSEPOWER | 20hp |
| SHAFT LENGTH | 15″ (Short) |
| STEERING | Tiller |
| STARTING | Electric |
| TRIM & TILT | Manual |
| FUEL DELIVERY | EFI |
| FUEL TANK | External |
| CYLINDER(S) | 2 |
| DISPLACEMENT | 333 cc (20.3 cubic inches) |
| BORE AND STROKE | 61 mm x 57 mm (2.402 in. x 2.244 in.) |
| FULL THROTTLE RPM RANGE | 5400-6100 |
| IGNITION SYSTEM | Digital CD Ignition w/Electronic Spark Advance |
| INDUCTION SCAVENGING | SOHC |
| VALVES PER CYLINDER | 2 |
| FUEL TYPE | 87 Octane (up to 10% ethanol content) |
| FUEL TANK / FUEL LINE | 3.2 Gal. Fuel Tank + Quick Connect Fuel Line |
| OIL TYPE | SAE 10W-30 (Mercury 4-Stroke Outboard Oil) |
| OIL CAPACITY | 1 Quart (1000 ml) |
| LUBRICATION | Trochoid Pump |
| ALTERNATOR | 12V 138W 12A (standard on electric start models) |
| COOLING SYSTEM | Water-Cooled, Thermostatically Controlled |
| SALTWATER RATED | Yes |
| GEAR RATIO | 2.15:1 |
| GEAR SHIFT | Forward-Neutral-Reverse (shift in tiller handle) |
| PROPELLER | 9.2″ Diameter X 9.8″ Pitch 3-Blade Aluminum |
IN THE BOX
- Fuel Tank (3.2 gallon)
- Quick Connect Fuel Line
- Mercury 3-Year Warranty
- Aluminum Propeller
- Mercury 4-Stroke Oil
- Owner’s Manual & Tool Kit

2021 HONDA 9.9 HP BF10DK3SHS Outboard Motor
Mercury 9.9HP 9.9ELH Command Thrust Outboard
2021 Mercury 3.5 HP MH Outboard Motor
Yamaha 175HP | F175LA
2021 HONDA 8 HP BF8DK3LHA Outboard Motor
2021 HONDA 9.9 HP BFP10D3XHS Power Thrust Outboard Motor
2021 HONDA 9.9 HP BFP10D3XHT Power Thrust Outboard Motor
Honda 9.9HP High Thrust Portable Outboard | BFP10D3XHT
2021 HONDA 8 HP BFP8DK3LHT Power Thrust Outboard Motor
Mercury 4HP 4MH Outboard
SALE - Mercury 9.9HP 9.9ELH Outboard | Special Stock
Mercury 8HP 8ELH Outboard
2021 HONDA 9.9 HP BF10DK3LH Outboard Motor
2021 HONDA 5 HP BF5DHLHNA Outboard Motor
Yamaha 150HP V Max - VF150XA V MAX SHO
2021 HONDA 8 HP BFP8DK3XHS Power Thrust Outboard Motor
Achilles HB-LX Series Inflatable Boat | HB-240LX 2022
Mercury 2.5HP 2.5MH Outboard
Mercury 5HP 5MH Outboard
2021 HONDA 8 HP BF8DK3LHSA Outboard Motor
2021 HONDA 2.3 HP BF2.3DHLCH Outboard Motor
2021 HONDA 15 HP BF15D3SHT Outboard Motor
2021 Mercury 3.5 HP MLH Outboard Motor
Mercury 9.9HP 9.9MXLH Outboard
2021 HONDA 9.9 HP BFP10D3XH Power Thrust Outboard Motor
Yamaha Outboards 40HP F40LA
2021 HONDA 15 HP BF15D3SHS Outboard Motor
2021 HONDA 20 HP BF20D3SH Outboard Motor
Achilles LSR Series Inflatable Boat | LSR-310E 2022
Mercury 15HP 15MH EFI Outboard
Mercury Propane Outboard 5HP 5MH LPG
Achilles LSI-E Series Inflatable Boat | LSI-310E 2022
Mercury 15HP 15MLH EFI Outboard
Mercury 15HP 15MRC EFI Outboard
Mercury 9.9HP 9.9EXLH Command Thrust Outboard
2021 HONDA 2.3 HP BF2.3DHSCH Outboard Motor
Yamaha Outboards 425HP XF425ESB
2021 HONDA 15 HP BF15D3LH Outboard Motor
Mercury 8HP 8MLH Outboard 