The Honda BF 300A XDU is a 4-stroke outboard marine engine designed for large fiberglass or aluminum boats, yachts, and professional commercial vessels that require an extra-long shaft. It features a 300 HP / 223.7 kW and 4952 cc V8 SOHC VTEC PGM-FI engine. The BF 300A XDU, with its 4952 cc V8 SOHC VTEC engine, is optimized for large boats, dual-engine configurations, and professional marine applications.
BF 300A XDU Engine Technology and Key Advantages
The V8 VTEC system prevents power loss at high RPMs, while PGM-FI electronic injection precisely controls fuel dosage. The 32-valve SOHC structure combines a wide power band with low fuel consumption.
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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 dosage.
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Extra-Long Shaft (572 mm (22.5")): Perfectly matches the transom height of large fiberglass or aluminum boats — the propeller operates at optimum depth.
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F–N–R Gear System: Forward, neutral, and reverse — full control during maneuvers in tight spaces, at the dock, and in the marina.
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Electric Start: Instant activation with a key or button — comfortable and fast starting.
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Electric Trim and Tilt: Adjust trim angle with a button — optimizes fuel efficiency and speed during navigation; tilt allows the engine to be fully raised.
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External Fuel Tank: Range determined by user needs — comfort for long routes with external tank connection.
Extra-Long Shaft — Which Boat Type is it Suitable For?
The extra-long shaft (572 mm (22.5")) allows the propeller to operate at the correct water depth on large fiberglass and aluminum boats with high freeboards. It is 64 mm longer than a standard long shaft (508 mm); measure your transom height before mounting.
Technical Specifications
| Engine Power |
300 HP / 223.7 kW |
| Displacement |
4952 cc |
| Number of Cylinders |
8 |
| Engine Type |
4-stroke, SOHC, V8, 32 Valves, VTEC, Water-Cooled, PGM-FI |
| Shaft Length |
Extra-Long Shaft / 572 mm (22.5") |
| Gear System |
F – N – R (Forward / Neutral / Reverse) |
| Starting System |
Electric |
| Trim System |
Electric Trim and Tilt |
| Fuel Type |
Unleaded Gasoline |
| Fuel Tank |
External |
| Weight |
355 KG |
| Control Type |
Tiller (Handle) |
| Model Code |
BF 300A XDU |
Who is This Engine For?
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Large yachts and long-distance route boats: primary high-power source
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Dual-engine configuration: balance of power and backup system
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Commercial and professional marine applications: high reliability and low maintenance costs
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Performance boats prioritizing high speed and load capacity: V8 torque advantage
Maintenance and Longevity
4-stroke Honda engines operate trouble-free for many years with regular oil changes and end-of-season maintenance protocols. Impeller inspection for the water-cooled system should be performed every 100 hours or every two seasons. Freshwater flushing is mandatory after every use in saltwater.
Related maintenance categories: Maintenance Kit | Engine Oil | Impeller | Honda Marine Spare Parts
Frequently Asked Questions
What boat size is a Honda 300 HP engine suitable for?
300 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 advantage 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 waterline with a button to optimize 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 XDU?
Honda outboard motors are compatible with most Zodiac, Ribeye, Highfield, Bombard, Sea Eagle, and local brand inflatable boats thanks to their universal stern clamp system. The only criteria are your boat's 572 mm (22.5") 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
Is This the Right Configuration for Your Boat?
Share your boat model, transom height, and intended use — let's confirm together the suitability of the Honda BF 300A XDU engine for your boat and the correct shaft selection.