Mercury 250HP 250L 4-Stroke Outboard – 20″ Shaft
The 250-horsepower Mercury 250L four-stroke outboard uses a 20-inch shaft for compatible lower-transom installations. Its propulsion output supports cruising and fishing, while proper shaft matching helps maintain propeller depth and efficient thrust transfer.
Description
SET
Mercury 250HP 250L 4-Stroke Outboard Specs
| Brand | Mercury Marine |
| Full Model Code / Part Number | 250L 4-Stroke (20" Shaft) |
| Country of Origin | USA |
| Engine Type & Configuration | 4-Stroke Inline 6 (Supercharged with Verado SmartCraft) |
| Horsepower Output (HP / kW) | 250 HP (184 kW) |
| Displacement (cc / cu in) | 2600 cc (158 cu in) |
| Bore x Stroke (mm / in) | 82.0 x 82.0 mm (3.23 x 3.23 in) |
| Maximum RPM Range (Full Throttle Operating Range) | 5800 - 6400 RPM |
| Fuel Induction System | Sequential Multi-Port Electronic Fuel Injection (EFI) with Supercharger |
| Ignition System | SmartCraft ECM 0d Digital Inductive |
| Starting System | Electric Start with SmartStart Push Button |
| Steering System | Electro-Hydraulic Power Steering |
| Trim & Tilt System | Smart Craft Power Trim and Tilt |
| Gear Ratio & Shift Mechanism | 1.85:1 (Forward - Neutral - Reverse) |
| Exhaust System | Through Propeller |
| Recommended Transom Shaft Length | L: 20 inches |
| Alternator / Charging Output (Amps / Watts) | 70 Amp (Idle Charge Battery Management System) / 882 Watts |
| Recommended Fuel Grade & Oil Type | Regular Unleaded (Min. 87 Octane) / Mercury 4-Stroke Outboard Oil NMMA FC-W 25W-40 |
| Dry Weight (kg / lbs) | 268 kg / 600 lbs |
| Standard Warranty | 3 Years Limited Recreational Warranty |
Common Question of Mercury 250L
Is Mercury 250L a four-stroke?
Yes. The Mercury 250L is a 250-horsepower four-stroke outboard with a 20-inch shaft. Its electronic fuel injection system controls fuel delivery during starting, acceleration, and cruising. Confirm controls, steering, battery, wiring, fuel, transom strength, and package contents before installing this high performance outboard motor.
What transom fits its shaft?
A 20-inch transom is the intended match for this 250L configuration. Measure the boat before purchase because incorrect shaft length can affect cooling-water pickup, gearcase depth, propeller immersion, steering response, and engine trim. Accurate measurement supports this ready to bolt marine outboard installation.
What should buyers verify?
Verify horsepower suitability, shaft length, engine weight, transom capacity, steering hardware, control equipment, battery connections, wiring, fuel supply, gauges, and package contents. A 20-inch shaft does not guarantee universal fitment. Follow Mercury installation documentation and the hull manufacturer’s requirements before repowering or operating the engine.
Reviews
There are no reviews yet.