Mercury 150 HP Electric Start Steering Trim and Tilt Long Shaft White Outboard Motor

The Mercury FourStroke 150 L EFI (Cold Fusion White) is a 4-stroke outboard marine engine designed for 4–7 meter medium-sized fiberglass, aluminum, or inflatable boats that require a long shaft, with 150 HP / 110 kW and a 3000 cc 4-cylinder engine. The FourStroke 150 L EFI (Cold Fusion White) with its 3000 cc 4-cylinder EFI FourStroke engine offers efficient and reliable power to medium-sized boat users. This model, which falls within Mercury's most popular power range, stands out with its extensive service network and long lifespan advantage.

FourStroke 150 L EFI (Cold Fusion White) Series Features and Technology Advantages

The 4-cylinder design provides balanced vibration and strong torque, ensuring stable cruising for medium-sized boats. EFI electronic injection ensures reliable starting in all weather conditions and optimized fuel consumption.

• 4-Cylinder Engine (3000 cc): The 4-cylinder design provides balanced vibration and strong torque, ensuring stable cruising for medium-sized boats.
• Long Shaft (508 mm (20")): The propeller operates at optimum depth at the correct transom height.
• EFI Electronic Injection: Easy cold starting and lower fuel consumption compared to carbureted alternatives.
• Electric Start: Instant activation with a key or button — comfortable and fast starting.
• Power Trim & Tilt: Adjusting the trim angle with a button while cruising — fuel efficiency optimization; tilting the engine completely up.
• External Flooded Fuel System: Connection to a large capacity external tank — range is determined by user needs.

Long Shaft — Which Boat Type Is It Suitable For?

The long shaft (508 mm (20")) is suitable for the vast majority of inflatable, aluminum, and fiberglass boat models. For boats with a transom height of 381 mm, a short shaft model should be preferred.

Technical Specifications

Who Is This Engine For?

• 4–7 meter medium-sized boat primary engine: 4-cylinder balanced power and quiet operation
• Fishing and coastal cruising: EFI economy for comfortable long routes
• Family boat and weekly use: reliable and low-maintenance power source
• Rental boat applications: extensive Mercury service network and spare parts access

Maintenance and Longevity

4-stroke Mercury engines operate trouble-free for many years with regular oil changes and end-of-season maintenance protocols. The impeller of the water-cooled system should be checked every 100 hours or every two seasons. Fresh water rinsing is mandatory after every use in saltwater.

Related maintenance categories: Maintenance Kit | Engine Oil | Impeller | Mercury Spare Parts

Frequently Asked Questions

What boat size does the Mercury FourStroke 150 HP engine fit?

150 HP power can fit different sizes depending on the boat's weight and type. General rule: 15–20 kg boat weight per HP. Always check the maximum engine power recommended by the boat manufacturer.

What advantages does an EFI system offer compared to a carbureted engine?

EFI (Electronic Fuel Injection) does not require a primer pump or choke adjustment. It provides reliable starting in cold weather and at high altitudes, consistent power output, and lower fuel consumption compared to carbureted alternatives.

What are the maintenance intervals for the Mercury FourStroke?

Oil change at the first 20 hours, then every 100 hours or once a season. Impeller check every two seasons. Fresh water rinsing is mandatory after every use in saltwater. End-of-season fuel system protection is recommended.

Which boat and inflatable boat brands is the FourStroke 150 L EFI (Cold Fusion White) compatible with?

Mercury outboard motors are compatible with many fiberglass, aluminum, and inflatable boat models thanks to their universal transom clamp or transom mounting system. The only criteria are your boat's 508 mm (20") transom height and the maximum engine power approved by the manufacturer. You can get compatibility confirmation from Clever Marin by sharing your boat model.

Related Products and Categories

• Mercury Outboard Motors
• Mercury Marine Products
• Mercury Spare Parts
• Mercury 40–60 HP FourStroke
• Mercury 75–150 HP FourStroke
• Outboard Motors
• Boat Engines
• Maintenance Kit
• Impeller
• Anode

Is It the Right Configuration for Your Boat?

Share your boat model, transom height, and intended use — let's verify together if the Mercury FourStroke 150 L EFI (Cold Fusion White) engine is suitable for your boat and ensure the correct shaft selection.