Yamaha 300HP LF300XA – 4.2L V6 Counter 25in

Yamaha 300HP LF300XA 4.2L V6 Counter 25in

The Yamaha 300HP LF300XA is a legendary 4.2L V6 outboard featuring counter-rotation and a 25-inch shaft, recognized as a workhorse for twin-engine repowers and offshore applications. This 4166cc model utilizes a 24-valve DOHC design to achieve a superior power-to-weight ratio, delivering explosive thrust for deep-V hulls. The mechanical soul of the LF300XA focuses on torque density and thermal efficiency, utilizing Plasma Fusion technology to provide a harder, more durable cylinder surface that significantly reduces internal friction and engine weight compared to traditional steel-sleeved outboards.

Prioritizing long-term ownership value, the LF300XA leverages advanced Multi-Point EFI and Variable Camshaft Timing (VCT) to optimize fuel consumption and torque output at every RPM. The chassis is shielded by Yamaha’s proprietary multi-layered anti-corrosion system and sacrificial anodes to mitigate galvanic wear in harsh saltwater environments. Routine maintenance is simplified by easy-access internal components and the front-mounted freshwater flush port. This model features a stable 50-amp alternator, ensuring a reliable energy supply for navigational electronics, fish finders, and essential shipboard safety gear during long coastal transits.

Key Features of Yamaha LF300XA

• 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.