Mercury 150HP 150L White 4-Stroke Outboard – 20″ Shaft
The white 150-horsepower Mercury 150L four-stroke outboard uses a 20-inch shaft for compatible lower-transom boats. Its four-stroke propulsion supports dependable cruising, while correct shaft length helps maintain propeller alignment and efficient thrust delivery.
Description
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Mercury 150HP 150L White 4-Stroke Outboard Specs
| Brand | Mercury Marine |
| Full Model Code / Part Number | 150L White 4-Stroke (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 White
Is the white 150L four-stroke?
Yes. The white Mercury 150L is identified as a 150-horsepower four-stroke outboard with a 20-inch shaft. The white finish changes exterior appearance, while the engine still requires compatible controls, steering, battery, fuel, and transom equipment. Confirm the complete specification before installing this high performance outboard motor.
What transom fits its shaft?
A 20-inch transom is the intended match for this white 150L model. Measure the boat according to Mercury’s instructions before mounting. Correct shaft positioning supports cooling-water pickup, gearcase depth, propeller immersion, steering response, and engine trim. Accurate measurement supports a ready to bolt marine installation.
Does the white finish change performance?
No. The white finish changes exterior appearance rather than the listed horsepower or shaft length. Confirm fuel-system details, controls, wiring, battery connections, steering hardware, engine weight, and package contents with the seller. Proper hull matching and professional rigging remain essential for reliable four-stroke operation.












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