Mercury 150HP 150L 4-Stroke Outboard Motor – 20″ Shaft
With 150 horsepower, four-stroke operation, and a 20-inch shaft, the Mercury 150L supports compatible lower-transom boats. Its propulsion output suits cruising and fishing, while proper shaft matching helps maintain propeller depth and efficient thrust delivery.
Description
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Mercury 150HP 150L 4-Stroke Outboard Motor Specs
| Brand | Mercury Marine |
| Full Model Code / Part Number | 150L 4-Stroke Outboard Motor (20" Shaft) |
| Country of Origin | USA |
| Engine Type & Configuration | 4-Stroke Inline 4 (Single Overhead Cam with 8-Valves) |
| Horsepower Output (HP / kW) | 150 HP (110 kW) |
| Displacement (cc / cu in) | 3000 cc (183 cu in) |
| Bore x Stroke (mm / in) | 102.0 x 92.0 mm (4.0 x 3.6 in) |
| Maximum RPM Range (Full Throttle Operating Range) | 5000 - 5800 RPM |
| Fuel Induction System | Electronic Fuel Injection (EFI) Computer Controlled with Multi-Port |
| Ignition System | SmartCraft ECM 0d Digital Inductive |
| Starting System | Electric Start with SmartStart Push Button |
| Steering System | Remote Mechanical Steering Compatible |
| Trim & Tilt System | Smart Craft Power Trim and Tilt |
| Gear Ratio & Shift Mechanism | 2.38:1 (Forward - Neutral - Reverse) |
| Exhaust System | Through Propeller |
| Recommended Transom Shaft Length | L: 20 inches |
| Alternator / Charging Output (Amps / Watts) | 60 Amp (Idle Charge Battery Management System) / 756 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) | 206 kg / 455 lbs |
| Standard Warranty | 3 Years Limited Recreational Warranty |
Common Question of Mercury 150L
Is Mercury 150L a four-stroke?
Yes. The Mercury 150L is a 150-horsepower four-stroke outboard motor with a 20-inch shaft. Confirm the exact fuel-system specification, controls, steering, battery, and transom requirements before installation. Correct boat matching supports reliable propulsion from this high performance outboard motor on a compatible hull.
What transom fits its shaft?
A 20-inch transom is the intended match for this 150L configuration. Measure the hull before purchase because incorrect shaft length can affect cooling-water pickup, gearcase depth, propeller immersion, steering response, and trim. Proper measurement supports a correctly installed ready to bolt marine outboard package.
What should buyers verify?
Buyers should verify horsepower suitability, shaft length, engine weight, transom strength, steering hardware, remote controls, battery capacity, wiring, fuel supply, gauges, and package contents. Model suffixes can identify shaft or equipment variations. Follow Mercury installation documentation before repowering or operating this four-stroke outboard.
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