Yamaha LF300ECB 300HP V6 Counter 25″ Shaft Outboard Motor

Yamaha 300HP LF300ECB V6 Counter 25in Shaft

The Yamaha 300HP LF300ECB is a precision-engineered 4.2L V6 outboard featuring counter-rotation and a 25-inch shaft, designed for the port side of twin-engine offshore configurations. This 4166cc powerhead utilizes a big-bore DOHC design and Plasma Fusion technology on the cylinder walls to eliminate heavy steel liners, resulting in a lightweight architecture that delivers superior torque density. The mechanical soul of the LF300ECB focuses on neutralizing propeller torque to provide exceptionally stable tracking and precise handling for mid-to-large deep-V hulls navigating American coastal waters.

Focused on superior operational efficiency, this model utilizes Multi-Point Precision EFI and Variable Camshaft Timing (VCT) to optimize the air-fuel mixture and air intake across the entire RPM band. The chassis is shielded by Yamaha’s proprietary multi-layered anti-corrosion system and high-grade marine alloys to safeguard against galvanic oxidation. Maintenance is made effortless by the front-mounted freshwater flush port and easy-access top-mount oil filter. This unit includes a high-output 50-amp alternator, providing a stable charging system for high-demand tournament electronics, livewells, and navigational safety gear.

Key Features of Yamaha LF300ECB

• 4166cc 24-Valve 60-Degree V6.
• 300 Horsepower Prop Shaft Rating.
• 25-Inch Shaft 571 lbs Weight.
• Counter-Rotation Gearcase for Twin Setups.
• Digital Electronic Control (DEC) Compatibility.
• 50 Amp Total Output Alternator.
• 1.75:1 Ratio Performance Gearcase.