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Our expert team performs the installation according to factory standards. If you have the installation done by us, you will receive an additional 6 months of warranty and a 5% discount on parts. A precise price quote will be provided shortly by our team.
The Mercury FourStroke 150 XL EFI is a 4-stroke outboard marine engine designed for medium-sized fiberglass, aluminum, or inflatable boats requiring an extra-long shaft, suitable for boats 4–7 meters in length. It features a 150 HP / 110 kW and 3000 cc 4-cylinder engine. The FourStroke 150 XL EFI, with its 3000 cc 4-cylinder EFI FourStroke engine, offers efficient and reliable power to medium-sized boat users. Positioned within Mercury's most popular power range, this model stands out with its extensive service network and long-life advantage.
The 4-cylinder design provides balanced vibration and strong torque, ensuring stable cruising for medium-sized boats. EFI electronic injection offers reliable starting in all weather conditions and optimized fuel consumption.
The extra-long shaft (572 mm (22.5")) allows the propeller to operate at the correct water depth on large fiberglass and aluminum boats with high freeboards. It is 64 mm longer than the standard long shaft (508 mm).
| Engine Power | 150 HP / 110 kW |
| Cylinder Displacement | 3000 cc |
| Cylinder Configuration | 4 Cylinders |
| Engine Type | 4-stroke, EFI electronic fuel injection, inline 4 cylinders, SOHC 8 valves |
| Shaft Length | Extra-Long Shaft / 572 mm (22.5") |
| Gear System | F – N – R (Forward / Neutral / Reverse) |
| Starting System | Electric (Starter) |
| Trim System | Electric Trim and Tilt (Power Trim & Tilt) |
| Fuel System | External floating system |
| Weight (Dry) | 206 KG |
| Control Type | CMS Mechanical Throttle Lever |
| Model Code | FourStroke 150 XL EFI |
4-stroke Mercury engines operate smoothly for many years with regular oil changes and an end-of-season maintenance protocol. The impeller of the water-cooled system should be checked every 100 hours or every two seasons. Freshwater flushing is mandatory after every use in saltwater.
Related maintenance categories: Maintenance Kit | Engine Oil | Impeller | Mercury Spare Parts
150 HP power can fit different sizes depending on boat weight and type. General rule: 15–20 kg boat weight per HP. Always check the maximum engine power recommended by the boat manufacturer.
EFI (Electronic Fuel Injection) does not require a primer pump or choke adjustment. It provides reliable starting in cold weather and high altitudes, consistent power output, and lower fuel consumption compared to carbureted alternatives.
Oil change at the first 20 hours, then oil change every 100 hours or once a season. Impeller check every two seasons. Freshwater flushing is mandatory after every use in saltwater. End-of-season fuel system protection is recommended.
Mercury outboard motors are compatible with many fiberglass, aluminum, and inflatable boat models thanks to their universal transom clamp or mounting system. The only criteria are your boat's transom height of 572 mm (22.5") and the maximum engine power approved by the manufacturer. You can confirm compatibility with Clever Marin by sharing your boat model.
Share your boat model, transom height, and intended use — let's confirm together whether the Mercury FourStroke 150 XL EFI engine is suitable for your boat and ensure the correct shaft selection.
The electronic fuel injection system ensures flawless starting at any temperature and stable power output at all RPMs. Because it optimizes fuel consumption down to the millimeter, it both enhances performance and offers significant savings on long journeys. This allows users of all types, from small boats to professional fleets, to achieve greater range with less fuel.
Quiet and vibration-reduced operation.
Mercury's unique engine block design naturally absorbs vibrations and minimizes noise. This creates a comfortable environment for both driver and passengers during extended voyages. Whether for fishing, cruising, or professional use, the low noise level ensures a pleasant and stress-free experience on the water.
Durable, corrosion-resistant housing.
Special alloys and multi-layer protection are used against saltwater, humidity, and harsh environmental conditions. This structure not only extends the engine's lifespan but also reduces the need for maintenance. For users who want an engine that can operate with high performance for years, Mercury becomes one of the most reliable brands in terms of durability.
