Description
The Yanmar 8LV370 (Z) 370HP Inboard Diesel Engine is engineered to deliver outstanding marine performance, fuel efficiency, and long-term durability for demanding recreational and commercial boating applications. Designed with advanced diesel technology and compact V8 engineering, this high-performance marine engine offers exceptional acceleration, smooth cruising characteristics, and dependable operation in both offshore and coastal environments.
Built around a compact 4.46-liter V8 diesel platform, the 8LV370 generates an impressive 370 horsepower at 3800 RPM while maintaining excellent fuel economy and low emissions. The engine’s compact dimensions and lightweight construction make it ideal for modern engine compartments where space optimization and weight reduction are critical. Despite its compact size, the engine delivers remarkable low-end torque and fast throttle response, allowing vessels to plane quickly and maintain stable performance even under heavy load conditions.
The engine utilizes an advanced twin-turbocharged and intercooled air induction system to maximize combustion efficiency and power delivery. The twin turbochargers provide rapid airflow response and consistent boost pressure throughout the RPM range, resulting in smooth acceleration and strong torque output. The integrated intercooler lowers intake air temperature, improving combustion density and increasing overall engine efficiency while helping maintain lower operating temperatures during prolonged operation.
At the core of the engine’s performance is Yanmar’s electronically controlled Denso Common Rail direct fuel injection system. This advanced fuel management technology precisely controls fuel delivery at high pressure, ensuring cleaner combustion, optimized fuel atomization, improved throttle response, and reduced fuel consumption. The common rail system also contributes to quieter engine operation, lower vibration levels, and reduced exhaust emissions compared to conventional mechanical diesel systems.
The Yanmar 8LV370 is equipped with a fully electronic vessel control system that provides smooth throttle transitions, accurate shifting performance, and real-time engine diagnostics. The integrated electronic controls improve maneuverability and operational precision while simplifying overall vessel management. Compatibility with NMEA2000 marine electronics allows seamless integration with modern navigation systems, digital displays, and onboard monitoring equipment.
Designed for durability in harsh marine environments, the engine incorporates a highly efficient freshwater cooling system with a heat exchanger configuration that protects internal components from corrosion while maintaining stable operating temperatures. Heavy-duty marine-grade materials, corrosion-resistant components, and reinforced internal construction ensure dependable long-term reliability in both freshwater and saltwater conditions.
The balanced V8 engine configuration significantly reduces vibration and operational noise, creating a quieter and more comfortable onboard experience. Flexible engine mounts and precision-engineered internal balancing further enhance smoothness during high-speed cruising and extended voyages. This makes the engine particularly suitable for luxury yachts and premium recreational vessels where passenger comfort is a priority.
A high-capacity 12V 180A alternator provides ample charging power for onboard systems including navigation electronics, lighting, communication equipment, refrigeration, entertainment systems, battery banks, and auxiliary marine accessories. This robust charging capability supports modern vessels with higher electrical demands and extended cruising requirements.
The 8LV370 (Z) is commonly paired with Yanmar’s advanced ZT370 sterndrive system, providing enhanced maneuverability, responsive handling, and superior propulsion efficiency. The engine is also suitable for various inboard and sterndrive marine installations, making it a flexible solution for different vessel configurations and performance requirements.
Yanmar designed the 8LV370 to meet major international marine emissions and environmental standards including EPA Tier 3, IMO Tier 2, RCD, EMC, and SOLAS certifications. These certifications demonstrate the engine’s environmentally responsible performance while maintaining the powerful output and reliability expected from a premium marine diesel engine.
With its exceptional power-to-weight ratio, advanced diesel technology, compact design, and proven marine durability, the Yanmar 8LV370 (Z) 370HP Inboard Diesel Engine is an outstanding propulsion solution for boat owners seeking high-performance diesel power, superior fuel efficiency, smooth operation, and long-lasting marine reliability.
Key Features
- 370HP high-performance V8 marine diesel engine
- Compact 4.46L engine design
- Twin turbocharged and intercooled aspiration system
- Advanced Denso Common Rail direct fuel injection
- Smooth acceleration and strong low-end torque
- Fully electronic vessel control system
- Fuel-efficient diesel performance
- Quiet operation with reduced vibration
- Freshwater cooling with heat exchanger protection
- High-output 12V / 180A alternator
- NMEA2000 electronics compatibility
- Suitable for sterndrive and inboard installations
- Corrosion-resistant marine construction
- EPA Tier 3 and IMO Tier 2 compliant
- Ideal for luxury and high-performance marine vessels
Technical Specifications
| Specification |
Details |
| Engine Model |
Yanmar 8LV370 (Z) |
| Engine Type |
V8 4-Stroke Marine Diesel |
| Horsepower |
370 HP (272 kW) |
| Rated RPM |
3800 RPM |
| Displacement |
4.46 Liters |
| Number of Cylinders |
8 Cylinders |
| Bore x Stroke |
86 mm × 96 mm |
| Fuel System |
Denso Common Rail Direct Injection |
| Aspiration |
Twin Turbocharged & Intercooled |
| Cooling System |
Freshwater Cooling with Heat Exchanger |
| Alternator Output |
12V / 180A |
| Engine Controls |
Electronic |
| Dry Weight |
Approx. 435 kg (959 lbs) |
| Dimensions (L × W × H) |
1340 × 880 × 766 mm |
| Emissions Compliance |
EPA Tier 3 / IMO Tier 2 |
| Drive Compatibility |
Yanmar ZT370 / Inboard Systems |
Applications
- Luxury cruising yachts
- Offshore sport fishing boats
- High-performance recreational vessels
- Sport cruisers and express boats
- Commercial marine vessels
- Premium sterndrive boats
- Offshore and coastal cruising applications
Advantages
- Exceptional power-to-weight ratio
- Strong acceleration and responsive handling
- Excellent fuel efficiency for long-range cruising
- Advanced electronic engine management system
- Compact dimensions for easier installation
- Reduced vibration and quieter operation
- Reliable performance in demanding marine environments
- Lower emissions with modern common rail technology
- High charging capacity for onboard electrical systems
- Proven Yanmar marine engineering and durability
The Yanmar 8LV370 (Z) 370HP Inboard Diesel Engine combines powerful V8 diesel performance, advanced fuel injection technology, and premium marine engineering to deliver reliable high-speed operation, fuel-efficient cruising, and long-term durability for modern recreational and commercial marine applications.
