Honda 350 HP V8 Ultra Long Shaft Marine Engine with Electronic Steering

The Honda BF 350A 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 350 HP / 257.4 kW and 4952 cc V8 SOHC VTEC PGM-FI engine. The BF 350A UDU with its 4952 cc V8 SOHC VTEC engine is optimized for large boats, dual-engine configurations, and professional marine applications.

BF 350A UDU Engine Technology and Key Advantages

The V8 VTEC system prevents power loss at high RPMs, while the PGM-FI electronic injection precisely controls fuel dosage. 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 the PGM-FI electronic injection precisely controls fuel dosage
• Ultra-Long Shaft (635 mm (25")): perfectly compatible with the transom height of large fiberglass or aluminum boats — the propeller operates at optimum 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 navigation; ability to fully raise the engine with tilt
• External Fuel Tank: Range determined by user needs — long-distance comfort with an 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 optimum 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 scrape the bottom — verify 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 configuration: balance of power and redundancy
• 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

Honda 4-stroke engines operate flawlessly for many years with regular oil changes and end-of-season maintenance protocols. Impeller inspection for the water-cooled system should be done every 100 hours or every two seasons. Freshwater flushing is mandatory after each use in saltwater.

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

Frequently Asked Questions

What boat size is the Honda 350 HP engine suitable for?

The 350 HP V8 power is generally suitable for large fiberglass or aluminum boats 8 meters and above. In a dual-engine configuration, the total power is doubled. 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 does electric trim and tilt do?

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

Which boat and inflatable boat brands are compatible with the BF 350A UDU?

Honda outboard motors are compatible with the vast majority of Zodiac, Ribeye, Highfield, Bombard, Sea Eagle, and local brand inflatable boats thanks 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 get compatibility confirmation from 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 350A UDU engine for your boat and the correct shaft selection together.