Mercury 25hp EFI Outboard

Electric Start | 15" Short Shaft | Battery-Free EFI | 25EH

The Mercury 25hp EFI (25EH) is engineered for boaters who prioritize effortless operation and high-torque performance in a portable package. Featuring a sophisticated Electronic Fuel Injection (EFI) system and Electric Start convenience, this 500cc 3-cylinder engine ensures turn-key reliability in all weather conditions. With its 15-inch short shaft, the 25EH is the ideal power choice for aluminum fishing boats, soft-bottom inflatables, and shallow-water skiffs that require consistent, fuel-efficient propulsion.

Technical Specifications

Powerfully Smooth, Expertly Refined

• Reliable Electric Start: Provides quick and effortless ignition at the push of a button, complemented by a manual recoil for secondary backup.
• 3-Cylinder Architecture: The balanced 3-cylinder design significantly reduces vibration and noise compared to 2-cylinder engines, providing a premium on-water experience.
• Advanced EFI Technology: Delivers crisp throttle response, stable idling, and optimized fuel consumption across the entire RPM range.
• High-Output 17A Alternator: Ensuring your starting battery remains charged while powering onboard electronics, fishfinders, and lighting systems.
• 4-Front Corrosion Protection: Multi-layer paint process and sacrificial anodes protect against the harshest saltwater environments.

The Professional Choice for Short-Transom Hulls

The Mercury 25EH is built for boaters who refuse to compromise on convenience and technology. Its high-displacement 500cc powerhead provides the low-end torque needed to move larger hulls efficiently while maintaining the fuel economy Mercury is world-famous for. Featuring a maintenance-free valve train and an easy-access oil change system, this 25hp EFI is designed for low cost of ownership and maximum time on the water. Backed by professional-grade engineering, it is the benchmark for mid-range value and performance.