The Mercury 25 HP EFI outboard motor 25MLH model is a manual start and manual tilt outboard with a 20-inch long shaft. The 25MLH delivers consistent, easy starting, crisp throttle response, increased fuel economy, and outstanding overall performance. Great for aluminum tiller, aluminum console, jon, utility, and fish & ski boats. Known for reliability, and fast acceleration, the 25 HP EFI portable outboard by Mercury is an affordable option especially considering the long list of standard features and the Mercury 3-year warranty.
Additional information
| Horsepower | 25 HP |
|---|---|
| Shaft Length | 20″ (Long) |
| Starter Type | Manual |
| Tilt & Trim | Manual |
FEATURES
- Utilizes a three-cylinder engine design, delivering superior balance performance over twin-cylinder designs
- Compact and powerful
- Offers extra displacement and great low-end torque, putting the boat smartly on plane
- Battery-free electronic fuel injection delivers easy-starting, crisp throttle response and increased fuel economy
- Engine protection operator warning system including: low oil pressure, over-rev, overheat and sensor failure
- Three year warranty
- PROPELLER NOT INCLUDED
SPECS
| MODEL | 25 HP EFI 25MLH |
|---|---|
| MODEL YEAR | 2021 |
| SKU | 25MLH-21EFI |
| WEIGHT | 167.0 lb |
| MANUFACTURER | Mercury |
| COUNTRY OF MANUFACTURE | Japan |
| HORSEPOWER | 25hp |
| SHAFT LENGTH | 20″ (Long) |
| STEERING | Tiller |
| STARTING | Manual |
| TRIM & TILT | Manual |
| FUEL DELIVERY | EFI |
| FUEL TANK | External |
| CYLINDER(S) | 3 |
| DISPLACEMENT | 526 Cubic Centimeter |
| BORE AND STROKE | 2.40 x 2.36 in. (61 x 60 mm) |
| FULL THROTTLE RPM RANGE | 5,000 – 6,000 |
| IGNITION SYSTEM | CDI with electronic spark advance |
| INDUCTION SCAVENGING | SOHC |
| VALVES PER CYLINDER | 2 |
| FUEL TYPE | 87 Octane (up to 10% ethanol content) |
| FUEL TANK / FUEL LINE | Remote fuel tank |
| OIL TYPE | Mercury 4-Stroke Outboard Oil |
| ALTERNATOR | None |
| COOLING SYSTEM | Water-cooled with thermostat |
| SALTWATER RATED | Yes |
| GEAR RATIO | 1.92:1 |
| GEAR SHIFT | F-N-R Gearcase options – Standard |
| PROPELLER | PROPELLER NOT INCLUDED |
| INTERNAL BATTERY | No |
IN THE BOX
- Fuel Tank (6.6 gallon)
- Quick Connect Fuel Line
- Mercury 3-Year Warranty
- Mercury 4-Stroke Oil
- Owner’s Manual & Tool Kit
- PROPELLER NOT INCLUDED

Mercury 15HP 15MLH EFI Outboard
2021 HONDA 8 HP BF8DK3LHSA Outboard Motor
Mercury 9.9HP 9.9EL Command Thrust Outboard
Mercury 9.9HP 9.9MLH Outboard
2021 Mercury 3.5 HP MLH Outboard Motor
2021 HONDA 9.9 HP BF10DK3LH Outboard Motor
2021 HONDA 8 HP BFP8DK3XHS Power Thrust Outboard Motor
2017 Yamaha F15 LMHA Outboard Motor
Honda Marine 20DK3LHC
Mercury 15HP 15MH EFI Outboard
Yamaha 250HP | F250XB
2021 HONDA 20 HP BF20D3SH Outboard Motor
2021 HONDA 2.3 HP BF2.3DHSCH Outboard Motor
2021 HONDA 15 HP BF15D3LH Outboard Motor
Yamaha Outboards 425HP XF425ESB
Yamaha 90HP | VF90LA V MAX SHO
2021 HONDA 8 HP BFP8DK3LHT Power Thrust Outboard Motor
Yamaha Outboards 300HP LF300XSB
2021 HONDA 9.9 HP BF10DK3LHS Outboard Motor
Honda 90HP | BF90D5LRTA
2021 Mercury 3.5 HP MH Outboard Motor
Yamaha 150HP | VF150LA V MAX SHO
Yamaha 40HP | F40LEHA
2017 Yamaha F20 SMHA Outboard Motor
2021 HONDA 9.9 HP BF10DK3SHS Outboard Motor
Yamaha Outboards 40HP F40JEA
2021 HONDA 9.9 HP BFP10D3XH Power Thrust Outboard Motor 