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Our expert team performs the installation according to factory standards. If you have the installation done by us, you will receive an additional 6 months of warranty and a 5% discount on parts. A precise price quote will be provided shortly by our team.
The Honda BF 20 DK3 LRTU is a 4-stroke outboard marine engine designed for small fiberglass, aluminum, or inflatable boats (2.5–4.5 meters) that require a long shaft. It features a 20 HP / 14.7 kW, 350 cc, 2-cylinder OHC carbureted engine. With its 350 cc 2-cylinder OHC engine, the BF 20 DK3 LRTU offers smoother power delivery and less vibration compared to single-cylinder alternatives.
The 2-cylinder OHC design reduces vibration and balances power output with a more frequent firing interval. With a portable weight of 58.5 KG, it provides a balanced power-to-weight ratio in this power class.
The long shaft (508 mm (20")) is suitable for most inflatable boats, aluminum fishing boats, and small fiberglass boat models. For boats with a transom height of 381 mm, a short shaft model should be preferred.
| Engine Power | 20 HP / 14.7 kW |
| Cylinder Displacement | 350 cc |
| Number of Cylinders | 2 |
| Engine Type | 4-stroke, OHC, 4 Valves, Water-cooled, Carbureted |
| Shaft Length | Long Shaft / 508 mm (20") |
| Gear System | F – N – R (Forward / Neutral / Reverse) |
| Starting | Electric |
| Trim System | Electric Trim and Tilt |
| Fuel Type | Unleaded Gasoline |
| Fuel Tank | 12 Liters |
| Weight | 58.5 KG |
| Control Type | Remote Control |
| Model Code | BF 20 DK3 LRTU |
4-stroke Honda engines run problem-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. Fresh water flushing is mandatory after every use in saltwater.
Related maintenance categories: Maintenance Kit | Engine Oil | Impeller | Honda Marine Spare Parts
20 HP power is an optimized range for 2.5–4.5 meter inflatable boats and small aluminum boats. The most efficient performance is achieved on boats with a total weight between 200–400 kg.
Two cylinders produce less vibration and smoother power output due to a more frequent firing interval. This difference is noticeable, especially at full throttle and against the wind. The 4-stroke design, which does not require an oil-gasoline mixture, ensures low maintenance costs.
Electric start instantly activates the engine with the turn of a key. It requires a battery connection.
Honda outboard motors are compatible with most 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 transom height of 508 mm (20") and the maximum engine power approved by the manufacturer. You can get compatibility confirmation from Clever Marin by sharing your boat model.
Share your boat model, transom height, and intended use — let's confirm together the suitability of the Honda BF 20 DK3 LRTU engine for your boat and the correct shaft selection.
Honda's BLAST (Boosted Low Speed Torque) system optimizes ignition timing at low revs, generating extra torque during takeoff and acceleration. This allows for faster recovery, especially when maneuvering under load. This results in a safe and controlled ride in both fishing boats and long-hulled fiberglass vessels.
With Lean Burn Control
Intelligent Fuel Management
Lean Burn Control measures the engine's required combustion mixture in real time at cruising speed, applying a more refined combustion profile. This significantly reduces fuel consumption on long journeys, while also keeping the engine cooler and more stable. It offers a noticeable advantage in terms of range, especially for summer boaters and commercial vessels.
Multilayer Honda
Corrosion Protection
Honda Marine hulls are protected by a multi-layer electroplating system developed to withstand saltwater and humid environments. The aluminum alloy block, zinc anodes, and special surface coatings work together to delay corrosion for years. Even in boats that spend a lot of time at sea, the engine's exterior and internal components remain durable, extending maintenance intervals.
