Mercury 115 HP Electric Start, Steering, Trim and Tilt, Extra Long Shaft Outboard Motor

The Mercury FourStroke 115 EXLPT EFI is a 4-stroke outboard marine engine designed for 4–7 meter medium-sized fiberglass, aluminum, or inflatable boats requiring an extra-long shaft, with 115 HP / 85 kW and a 2064 cc 4-cylinder engine. The FourStroke 115 EXLPT EFI, with its 2064 cc 4-cylinder EFI FourStroke engine, offers efficient and reliable power to medium-sized boat users. This model, part of Mercury's most popular power range, stands out with its extensive service network and long lifespan.

FourStroke 115 EXLPT EFI Series Features and Technology Advantages

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

• 4-Cylinder Engine (2064 cc): The 4-cylinder design offers balanced vibration and powerful torque, ensuring stable cruising for medium-sized boats.
• Extra Long Shaft (572 mm (22.5")): The propeller operates at the optimum depth at the correct transom height.
• EFI Electronic Injection: Easy cold starting and lower fuel consumption compared to carbureted alternatives.
• Electric Start: Instant engagement with a key or button — comfortable and fast starting.
• Power Trim & Tilt: Adjusting the trim angle with a button while cruising — optimizing fuel efficiency; fully raising the engine with tilt.
• External Floating Fuel System: Connection to a large capacity external tank — range is determined by user needs.

Extra Long Shaft — What Boat Type Is It Suitable For?

The extra-long shaft (572 mm (22.5")) allows the propeller to operate at the correct water depth on high-sided large fiberglass and aluminum boats. It is 64 mm longer than the standard long shaft (508 mm).

Technical Specifications

Who Is This Engine For?

• Primary engine for 4–7 meter medium-sized boats: 4-cylinder balanced power and quiet operation
• Fishing and coastal cruising: Long route comfort with EFI economy
• Family boats and weekly use: Reliable and low-maintenance power source
• Rental boat applications: Extensive Mercury service network and spare part 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. In saltwater use, freshwater flushing is mandatory after each use.

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

Frequently Asked Questions

What boat size is the Mercury FourStroke 115 HP engine suitable for?

115 HP power can suit 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.

What advantages does the 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 high altitudes, consistent power output, and lower fuel consumption compared to carbureted alternatives.

What are the maintenance intervals for Mercury FourStroke?

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

Which boat and brand models are compatible with the FourStroke 115 EXLPT EFI?

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 572 mm (22.5") transom height and the maximum engine power approved by the manufacturer. You can confirm compatibility with 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 This the Right Configuration for Your Boat?

Share your boat model, transom height, and intended use — let's verify together the suitability of the Mercury FourStroke 115 EXLPT EFI engine for your boat and the correct shaft selection.