Mercury 115ELPT 115HP Command Thrust 4-Stroke 20″ Outboard Motor

Mercury 115HP 115ELPT Command Thrust Long Power

Technology driven and built upon a 2.1L four-cylinder engine family, the Mercury 115HP 115ELPT serves as a high-torque solution for US boaters requiring a prop-rated propulsion unit with superior thermal stability. This 115HP four-stroke technology utilizes a Command Thrust (CT) gearcase architecture and a larger internal gear set to maximize mechanical efficiency and displacement for heavy pontoon boats and high-transom utilities. The 20-inch long shaft design provides an optimized center of gravity, while the Electronic Fuel Injection (EFI) and electric start ensure immediate, reliable ignition across diverse inland and coastal environments.

Operational longevity of the 115ELPT model is secured through a specialized water-cooled system featuring a stainless-steel water pump housing to maintain internal cleanliness under high-load conditions. To facilitate easy after-storage starts, the unit employs a sophisticated EFI system paired with a 35A high-output alternator for onboard electronics, while the Mercury XK360 alloy science utilizes a multi-layer finish to mitigate oxidation. With a 3-year/300-hour service interval and an oversized propeller footprint, this high-performance outboard provides superior ownership value for boaters seeking high-thrust performance and refined control.

Key Features of Mercury 115ELPT FourStroke

• 2.1L Inline 4-Cylinder 8-Valve SOHC Block
• 115.0HP Prop-Rated Output at 5500 RPM
• 20″ Long Shaft / 359 lbs Dry Weight Chassis
• Electronic Fuel Injection (EFI) Induction System
• Remote Steering with Command Thrust (CT) Gearcase
• Digital Inductive Ignition with 35A Alternator
• 2.38:1 Gear Ratio / 5.5qt Oil Capacity