Mercury 25HP 25ELHGA Jet Outboard Motor
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
- High output 15amp alternator for constant battery charging
- 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
- Mercury 3 year warranty
Specifications :
| MODEL | 1A3G371BK |
|---|---|
| MODEL YEAR | 2025 |
| SKU | JET25ELHGA-25EFI |
| WEIGHT | 195.0 lb |
| MANUFACTURER | Mercury |
| COUNTRY OF MANUFACTURE | Japan |
| HORSEPOWER | 25hp |
| SHAFT LENGTH | 20″ (Long) |
| STEERING | Tiller |
| STARTING | Electric |
| TRIM & TILT | Manual Gas Assist |
| 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) |
| OIL TYPE | Mercury 4-Stroke Outboard Oil |
| ALTERNATOR | 15A, 186W |
| COOLING SYSTEM | Water-cooled with thermostat |
| SALTWATER RATED | Yes |
| GEAR RATIO | 1.92:1 |
| GEAR SHIFT | F-N-R Gearcase options – Standard |
| PROPELLER | None |
| INTERNAL BATTERY | No |
In the Box : Mercury 25HP 25ELHGA Jet Outboard Motor
- Fuel Tank (6.6 gallon)
- Quick Connect Fuel Line
- Mercury 3-Year Warranty
- Mercury 4-Stroke Oil
- Owner’s Manual & Tool Kit
The Mercury 25HP 25ELHGA Jet Outboard Motor is a high-performance 4-stroke engine specifically designed for navigating shallow, rocky, or obstructed waters where conventional propellers cannot navigate. This engine replaces the standard lower gear unit with a stainless steel jet impeller mounted parallel to the bottom of the boat’s hull.
Here’s a breakdown of the meaning of the 25ELHGA model code: 25:
Engine power is 25 horsepower at the powerhead. (Note: Due to efficiency losses in the jet pump system, the actual thrust in the water is equivalent to approximately 15-18 hp of a propeller engine.) E:
Electric Start System.
L: 20-inch shaft length / Long Shaft, ideal for mounting on a 15-inch-high boat transom to position the jet intake parallel to the hull bottom.
H: Operation using the Tiller Handle (Rumpel) or hand steering lever. GA: Gas assisted hydraulic lifting system (Gas Assist Trim/Tilt) to facilitate manual raising or lowering of the machine angle.










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