Twin Yamaha 300hp DEC Four Stroke Outboard Motors – Elite Offshore Power at Mrs Boats Accessories

Discover unmatched marine performance with the Twin Yamaha 300hp DEC Four Stroke Outboard Motors (F300UCB & LF300UCB) at Mrs Boats Accessories, an authorized Yamaha dealership in the United States. Engineered for offshore anglers, commercial operators, and boating enthusiasts, these 300hp V6 4.2-liter outboards with standard and counter-rotation deliver exceptional power, efficiency, and 96% reliability for large fishing boats, center consoles, yachts, and multi-engine setups navigating coastal waters, lakes, or the open sea.

Key Features

• 4.2L V6 Engine: High-performance 60-degree V6 with plasma-fused cylinders delivers robust torque and power, optimized for offshore fishing and long-range cruising.

• Digital Electric Steering (DES): Integrated steering eliminates external hydraulic components, providing smooth, precise control with minimal power draw.

• Standard & Counter-Rotation Pair: The F300UCB (standard rotation) and LF300UCB (counter-rotation) neutralize propeller torque in twin-engine setups, ensuring superior tracking and control.

• Saltwater Series II™ HP Propeller: Boosts top-end speed by up to 2 mph in lighter applications, featuring Yamaha’s Shift Dampener System (SDS®) for smoother, quieter shifting.

• Thrust Enhancing Reverse Exhaust (TERE): Redirects exhaust away from the prop below 2500 RPM for enhanced grip and maneuverability during docking or slow-speed trolling.

• TotalTilt™ System: Enables full tilt up or down with a double-tap of a button, simplifying trailering and storage.

• Helm Master EX® Compatibility: Integrates with Yamaha’s advanced boat control system for joystick maneuverability, autopilot, and SetPoint™ modes, enhancing docking and fishing precision.

• High-Output Charging: 70-amp alternator (55A battery charging) powers marine electronics for navigation and fishing.

• 3-Year Yamaha Warranty: Backed by Yamaha for long-lasting reliability.

Why Choose the Twin Yamaha 300hp DEC Outboards?

The Twin Yamaha 300hp DEC Four Stroke Outboards redefine marine propulsion with their 4.2L V6 engines, standard and counter-rotation, and integrated DES, making them a top choice for offshore fishing, recreational boating, and luxury yachting in the United States. Their 30-inch XX-long shafts ensure compatibility with larger vessels, while features like TotalTilt™, TERE, and Electronic Fuel Injection (EFI) deliver unmatched control, efficiency, and durability. Available in Yamaha Gray or Pearlescent White, these outboards combine style and performance for a premium boating experience.

Specifications

Yamaha F300UCB DEC (Standard Rotation)

• Model: F300UCB

• Engine Type: 4-Stroke, 24-Valve, DOHC with VCT, 60-degree V6

• Horsepower: 300hp

• Cylinders: V6

• Shaft Length: 30 inches (XX-Long)

• Steering: Integrated Digital Electric Steering (DES) with Digital Electronic Controls

• Starter: Electric

• Weight: 562 lbs

• Alternator Output: 70 amp (55A battery charging)

• Degree of Tilt: 70°

• Degree of Trim: -3° to +16°

• Full Throttle Range: 5000–6000 RPM

• Displacement: 4169cc (4.2L)

• Fuel System: Electronic Fuel Injection (EFI)

• Lubrication System: Wet Sump

• Engine Oil Capacity: 6.3L (with filter)

• Propeller Rotation: Standard (Clockwise)

• Warranty: Yamaha 3-Year Warranty

Yamaha LF300UCB DEC (Counter Rotation – Port Side)

• Model: LF300UCB

• Engine Type: 4-Stroke, 24-Valve, DOHC with VCT, 60-degree V6

• Horsepower: 300hp

• Cylinders: V6

• Shaft Length: 30 inches (XX-Long)

• Steering: Integrated Digital Electric Steering (DES) with Digital Electronic Controls

• Starter: Electric

• Weight: 562 lbs

• Alternator Output: 70 amp (55A battery charging)

• Degree of Tilt: 70°

• Degree of Trim: -3° to +16°

• Full Throttle Range: 5000–6000 RPM

• Displacement: 4169cc (4.2L)

• Fuel System: Electronic Fuel Injection (EFI)

• Lubrication System: Wet Sump

• Engine Oil Capacity: 6.3L (with filter)

• Propeller Rotation: Counter (Left-hand)

• Warranty: Yamaha 3-Year Warranty

Standard Equipment

• Pearlescent White or Yamaha Gray Cowling

• Power Trim & Tilt with TotalTilt™

• Owner’s Manual Note: Propellers sold separately. Contact our parts counter at +1 (504) 920-0732 for options.

Dealer Preparation

At Mrs Boats Accessories, our authorized Yamaha dealership ensures your Twin Yamaha 300hp DEC Outboards are ready for the water. For a $1000 fee, our factory-qualified technicians perform a full test run, connecting the motors to rigging, fuel, battery, and diagnostic computer, ensuring optimal performance. The manufacturer’s inspection checklist validates your 3-year warranty.

Shop at Mrs Boats Accessories

Find the Twin Yamaha 300hp DEC Outboards at Mrs Boats Accessories, your trusted source for marine electronics, inflatable boats, fishing kayaks, and boating accessories in the United States. Enjoy fast U.S. shipping and expert support from our authorized Yamaha dealership.

Delivery Options

• Pick-Up: Available from our Titusville, FL warehouse.

• Shipping: Contact us to arrange delivery or use your preferred freight company. Note: Outboards require a delivery signature and must be shipped to a physical street address. Inspect packaging upon delivery and report any damage immediately to Customer Service at +1 (504) 920-0732.

Contact Us

For inquiries about the Yamaha outboard motors or other marine gear:
Mrs Boats Accessories
📍 1591 Sea Gull Dr, Titusville, FL 32796, USA
📞 +1 (504) 920-0732
📧 info@mrsboats.com

Legal & Compliance

All specifications and product details are provided directly by the manufacturer (Yamaha Motor Co., Ltd). This listing is for new, genuine Yamaha outboard motors, compliant with Google policies, and includes full manufacturer warranty.