The Yanmar 2YM15 Marine Diesel Engine is a powerful and compact 2-cylinder engine that delivers 14hp at 3600 rpm. Designed for small to medium-sized vessels such as sailboats, yachts, and small workboats, the 2YM15 provides dependable performance with exceptional fuel efficiency and reliability. Built with Yanmar’s advanced engineering, this engine is equipped with a freshwater cooling system to ensure long-lasting durability and consistent performance in both coastal and offshore environments.
The engine’s compact design allows for easy installation in tight engine compartments, while its direct fuel injection system improves fuel efficiency and reduces emissions. This makes the 2YM15 compliant with stringent global emission standards. The engine’s low noise and vibration levels ensure a comfortable experience onboard, making it ideal for recreational and light commercial marine use.
Technical Specifications:
- Engine Model: 2YM15
- Engine Type: 2-cylinder, 4-stroke, vertical water-cooled diesel engine
- Displacement: 0.570 litres (570 cc)
- Bore x Stroke: 75 mm x 77 mm
- Power Output: 14hp (10.3 kW) at 3600 rpm
- Compression Ratio: 23.5:1
- Cooling System: Freshwater cooling with heat exchanger
- Fuel Injection System: Direct injection
- Alternator Output: 12V – 125A
- Lubrication System: Forced lubrication by trochoid pump
- Oil Capacity: 2.0 litres
- Starting System: Electric start
- Direction of Rotation: Counterclockwise (viewed from flywheel)
- Weight: 114 kg (without gearbox)
- Gearbox Options: KM2P-1 or KM2P-1A mechanical gearbox
- Reduction Ratios: 2.21:1 or 3.22:1
- Exhaust System: Water-cooled, with wet exhaust manifold
Key Features:
- Freshwater Cooling: The heat exchanger system helps to maintain optimal engine temperatures, preventing corrosion and extending engine life.
- Compact Design: Ideal for small and medium vessels with limited engine space.
- Direct Injection: Improves fuel efficiency and ensures compliance with global emissions standards.
- Low Noise and Vibration: Offers smooth operation, ensuring a comfortable onboard experience.
- Durability: Built to withstand harsh marine conditions, with corrosion-resistant materials and efficient cooling.
Yanmar is a world-renowned manufacturer of high-quality marine diesel engines. The Yanmar 2YM15 exemplifies their commitment to innovation, offering exceptional performance, fuel efficiency, and reliability. Designed to handle tough marine environments, this engine provides lasting power for small to medium-sized boats.
Yanmar 2YM15 engine is available with three transmission options for marine applications. The KM2P-1 is a mechanical marine gear that provides smooth operation with a hydraulic clutch and selectable gear ratios. The SD25 SailDrive is a compact, low-vibration system that integrates directly with specific Yanmar engines, offering enhanced performance for sailboats. Additionally, bobtail engines are available, which are complete engine replacements for both stern drive and inboard applications, including essential systems such as fuel, electrical, cooling, and exhaust.







