Honda 300 HP V8 Electronic Steering Ultra Long Shaft Outboard Motor

The Honda BF 300A UDU is a 4-stroke outboard marine engine designed for large fiberglass or aluminum boats, yachts, and professional commercial vessels requiring an ultra-long shaft, featuring a 300 HP / 223.7 kW and 4952 cc V8 SOHC VTEC PGM-FI engine. The BF 300A UDU with its 4952 cc V8 SOHC VTEC engine is optimized for large boats, dual engine configurations, and professional marine applications.

BF 300A UDU Engine Technology and Key Advantages

The V8 VTEC system prevents power loss at high RPMs, while PGM-FI electronic injection precisely controls fuel metering. The 32-valve SOHC structure combines a wide power band with low fuel consumption.

• V8 SOHC VTEC PGM-FI Engine (4952 cc, 8 Cylinders): The V8 VTEC system prevents power loss at high RPMs, while PGM-FI electronic injection precisely controls fuel metering.
• Ultra-Long Shaft (635 mm (25")): perfectly suited to the transom height of large fiberglass or aluminum boats — propeller operates at optimal depth.
• F–N–R Gear System: Forward, neutral, and reverse — full control in tight spaces, dock, and marina maneuvers.
• Electric Start: Instant activation with key or button — comfortable and quick starting.
• Electric Trim and Tilt: Adjust trim angle with a button — optimizes fuel efficiency and speed during cruising; tilt allows for fully raising the engine.
• External Fuel Tank: Range determined by user needs — comfort for long routes with external tank connection.

Ultra-Long Shaft — Which Boat Type Is It Suitable For?

The ultra-long shaft (635 mm (25")) keeps the propeller at an optimal water depth in large yachts and professional boats with deep transom designs. Incorrect shaft selection will either leave the propeller out of the water or cause it to scrape the bottom — confirm your boat's transom measurement before installation.

Technical Specifications

Who is this Engine For?

• Large yachts and long-distance cruising boats: primary high power source
• Dual engine configurations: balance of power and redundancy system
• Commercial and professional marine applications: high reliability and low maintenance costs
• Performance boats prioritizing high speed and load capacity: V8 torque advantage

Maintenance and Longevity

4-stroke Honda engines run trouble-free for many years with regular oil changes and end-of-season maintenance protocols. The impeller of the water-cooled system should be checked every 100 hours or every two seasons. In saltwater use, freshwater flushing is mandatory after each use.

Related maintenance categories: Maintenance Kit | Engine Oil | Impeller | Honda Marine Spare Parts

Frequently Asked Questions

What boat size is the Honda 300 HP engine suitable for?

300 HP V8 power is generally suitable for large fiberglass or aluminum boats 8 meters and above. In dual engine configurations, total power doubles. Always check your boat's maximum engine power plate.

What advantages does the PGM-FI injection system offer over a carburetor?

PGM-FI electronic injection provides easy starting in cold weather, consistent power output, and low fuel consumption. Compared to carbureted alternatives, it does not require choke adjustment, and maintenance intervals are longer.

What do electric trim and tilt do?

Electric trim adjusts the boat's angle in the water with a button, optimizing fuel efficiency and cruising comfort. Tilt is used to completely raise the engine — necessary for entering shallow waters, docking, and storage.

Which boat and inflatable boat brands are compatible with the BF 300A UDU?

Honda outboard motors are compatible with the vast majority of Zodiac, Ribeye, Highfield, Bombard, Sea Eagle, and local brand inflatable boats due to their universal transom clamp system. The only criteria are your boat's 635 mm (25") transom height and the maximum engine power approved by the manufacturer. You can confirm compatibility with Clever Marin by sharing your boat model.

Related Products and Categories

• Honda Marine Outboard Motors
• Honda Marine Products
• Honda Marine Spare Parts
• 4-Stroke 175–300 HP Engines
• Outboard Motors
• Boat Engines
• Maintenance Kit
• Impeller
• Engine Oil
• Anode

Is This the Right Configuration for Your Boat?

Share your boat model, transom height, and intended use — let's confirm the suitability of the Honda BF 300A UDU engine for your boat and the correct shaft selection together.