Mercury 40 HP SeaPro Electric Start, Remote Steering, Trim & Tilt, CT, Long Shaft Outboard Motor

The Mercury FourStroke 40 ELPT EFI CT SeaPro is a 4-stroke outboard marine engine with 40 HP / 30 kW and a 995 cc 4-cylinder engine, designed for commercial fishing boats requiring a long shaft, rental tour boats, water taxis, and high-use vessels. Thanks to its Command Thrust (CT) gearcase system, it features the large gearcase and propeller of a higher horsepower engine block. The SeaPro series is a Mercury series specifically developed for commercial and heavy-duty outboard engines. Increased durability, SmartCraft integration, and extended service intervals are optimized for the needs of commercial operators.

FourStroke 40 ELPT EFI CT SeaPro Series Features and Technology Advantages

SeaPro engines aim for long life in saltwater environments with an enhanced cooling system and increased anode protection compared to standard FourStroke series. The SmartCraft gauge system enables fleet-specific engine monitoring.

• 4-Cylinder Engine (995 cc): SeaPro engines aim for long life in saltwater environments with an enhanced cooling system and increased anode protection compared to standard FourStroke series.
• Long Shaft (508 mm (20")): The propeller operates at optimum depth with the correct transom height.
• SeaPro Durability Package: Enhanced cooling, increased anode protection, and long service intervals.
• Command Thrust (CT) Gearcase: The large gearcase and propeller of a higher horsepower engine block — high torque at low RPM and powerful thrust capability.
• Electric Start: Instant activation with a key or button — comfortable and fast starting.
• Electric Trim & Tilt (Power Trim & Tilt): Adjust trim angle with a button while cruising — fuel efficiency optimization; full motor lift with tilt.
• 25 Liter Internal Tank: Sufficient capacity for medium-distance routes; option for external tank connection.

Long Shaft — Which Boat Type Is It Suitable For?

A long shaft (508 mm (20")) is suitable for most inflatable boats, aluminum boats, 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?

• Commercial fishing and tour boats: SeaPro's increased durability for intensive daily use.
• Water taxis and rental boats: low maintenance costs and long service intervals.
• Search and rescue and patrol boats: reliable power and SmartCraft engine monitoring.
• Fleet-specific coastal fishing: standard comparative performance and durability.

Maintenance and Long Life

4-stroke Mercury engines operate smoothly 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. Freshwater flushing is mandatory after every use in saltwater.

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

Frequently Asked Questions

Why is the Mercury SeaPro 40 HP recommended for commercial use?

The SeaPro series offers an enhanced cooling system and increased anode protection compared to standard FourStroke engines. SmartCraft integration facilitates fleet management and engine monitoring. Long service intervals reduce operational costs.

What does the SmartCraft system provide in SeaPro engines?

SmartCraft transmits engine status, fuel consumption, temperature, and hourly operating data to a digital display. In multi-engine configurations, each engine can be monitored separately. The early warning fault system prevents unexpected breakdowns.

What are the maintenance periods for SeaPro engines?

SeaPro engines are designed for long service intervals. Oil changes should be performed according to manufacturer recommendations. Freshwater flushing after every use in saltwater and end-of-season anode checks are mandatory.

Which boat and inflatable boat brands are compatible with the FourStroke 40 ELPT EFI CT SeaPro?

Mercury outboard engines 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 75–150 HP FourStroke
• Mercury SeaPro Engines
• Outboard Motors
• Boat Engines
• Maintenance Kit
• Impeller
• Anode

Is This the Right Configuration for Your Boat?

Share your boat model, transom height, and intended use — let's verify together if the Mercury FourStroke 40 ELPT EFI CT SeaPro engine is suitable for your boat and confirm the correct shaft selection.