Yanmar 4LV170 Marine Diesel Engine: Compact 170hp V-6 Power
*High-Performance V-6 Diesel for Demanding Sportfish and Motor Yachts*
The Yanmar 4LV170 marine diesel engine delivers impressive 170 horsepower from an exceptionally compact V-6 platform that represents the pinnacle of power density in its class. At Wave Inboard Motors, our certified Yanmar technicians have extensive hands-on experience with the 4LV series, making us your trusted partner for professional marine engine installation and maintenance of these high-performance engines.
This 170hp marine diesel engine features an advanced V-6 configuration that provides the perfect balance of compact dimensions, smooth operation, and robust power output. For complete operational details and maintenance schedules, refer to the Yanmar 4LV170 Operator’s Manual for proper procedures and service intervals. The 4LV170 is ideally suited for sportfish boats 30-38 feet, motor yachts, and performance vessels where space optimization is critical but uncompromised power is essential.
Technical Specifications
| Specification | Detail |
|---|---|
| Model | Yanmar 4LV170 |
| Engine Type | V-6, 4-stroke, Turbocharged & Aftercooled |
| Displacement | 2.8 L (2800 cc) |
| Max Output | 170 HP (125 kW) @ 3300 RPM |
| Fuel System | Electronic Control with Common Rail |
| Control System | Yanmar Multi-Display |
| Cooling System | Heat Exchanger (Freshwater Cooling) |
| Starting System | 12V Electric Start |
| Alternator Output | 80A (as standard) |
| Dry Weight | 395 kg (871 lbs) |
| Dimensions (LxWxH) | 878mm x 699mm x 699mm |
| Gear Ratio Options | 1.52:1, 1.75:1, 1.97:1, 2.04:1 |
[Image: Technical diagram showing 4LV170 V-6 configuration and key service points]
*Alt-text: Yanmar 4LV170 technical diagram highlighting compact V-6 design and service access*
Performance & Engineering Excellence
Compact V-6 Advantage
The 4LV170’s V-6 configuration provides exceptional power in a remarkably small package, making it ideal for sportfish repower projects where engine room space is at a premium. The 60-degree V-angle ensures perfect primary balance for smooth operation. For detailed maintenance procedures and torque specifications, consult the Yanmar 4LV170 Service Manual available through our technical library.
Advanced Electronic Management
Yanmar’s integrated monitoring system provides comprehensive engine data and diagnostics. When planning your marine engine repower, this system ensures optimal performance matching and provides valuable information during annual marine engine maintenance. The electronic control system continuously optimizes fuel injection timing and turbocharger performance for maximum efficiency.
Competitor Comparison
| Feature | Yanmar 4LV170 | Volvo Penta D3-170 | Cummins QSB5.9-175 |
|---|---|---|---|
| Configuration | V-6 Most Compact | Inline-5 | Inline-6 |
| Power | 170 HP @ 3300 RPM | 170 HP @ 3500 RPM | 175 HP @ 3000 RPM |
| Weight | 871 lbs (395 kg) | 694 lbs (315 kg) | 1250 lbs (567 kg) |
| Dimensions | Most Compact in Class | Moderate | Largest Footprint |
| Service Network | Global Yanmar Support | Global Volvo Penta | Global Cummins |
| Ideal For | Space-constrained installations | General marine use | Heavy-duty applications |
Verdict: The 4LV170 wins decisively on power density and compact design. While the Volvo Penta is lighter and the Cummins offers inline-six smoothness, the Yanmar delivers maximum horsepower in the smallest package – absolutely crucial for sportfish and performance vessels where every inch of engine room space is valuable.
Installation & Repower Solutions
When considering the 4LV170 for your yacht repower project, several key factors ensure optimal performance:
Space Optimization:
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Industry-leading compact dimensions (refer to Yanmar 4LV170 Installation Manual)
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Excellent weight distribution for performance hulls
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Multiple gear ratio options for optimal propeller matching
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Choosing the right HP for your vessel analysis available
Performance Characteristics:
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Quick acceleration for offshore fishing
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Smooth V-6 operation reduces vibration
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Excellent power-to-weight ratio
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Ideal for single vs twin engine installation configurations
[Image: 4LV170 installation in a sportfish boat showing space-efficient mounting]
*Alt-text: Yanmar 4LV170 installed in sportfish engine room demonstrating compact fit and service access*
Maintenance & Technical Support
Comprehensive Service Program
Our Yanmar certified maintenance program for the 4LV170 includes:
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Regular fuel system service for common rail components
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Cooling system maintenance and corrosion prevention
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Electronic system diagnostics and software updates
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Performance optimization tuning for specific applications
Technical Resources Available
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4LV170 Troubleshooting Guide for common operational issues
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Parts and service catalog for genuine Yanmar components
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Installation specifications for repower projects
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Electronic system manual for control setup and calibration
Honest Assessment: Pros & Cons
| Pros | Cons |
|---|---|
| Extremely compact V-6 design | Higher cost per horsepower than some competitors |
| Excellent power-to-weight ratio | Complex service accessibility in some areas |
| Smooth, balanced V-6 operation | Requires specialized diagnostic equipment |
| Global Yanmar support network | Premium pricing position |
| Perfect for space-constrained applications |
Applications & Next Steps
The Yanmar 4LV170 excels in applications where space is limited but performance cannot be compromised. From sportfish boats requiring quick acceleration to motor yachts needing compact power solutions, this engine delivers exceptional performance in a minimal footprint.
Access Technical Documents:
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4LV170 Operator’s Manual – Daily operation and routine care
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4LV170 Service Manual – Detailed repair and maintenance procedures
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Installation Guide – Proper mounting specifications and clearances
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Electronic System Manual – Control setup and troubleshooting protocols
[Image: Wave Inboard Motors technician performing precision service on 4LV170]
*Alt-text: Certified Yanmar technician performing specialized service on 4LV170 engine*
Contact us today to discuss how the 4LV170 can power your next project. Our Yanmar certified technicians are ready to provide expert guidance and professional installation services tailored to your specific vessel requirements.
Continue your research:
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Sportfish Repower Planning Guide
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Compact Diesel Engine Applications
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Marine Engine Power Density Comparison
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V-6 vs Inline Diesel Performance
Call to Action: Ready to maximize your engine room space without sacrificing performance? Contact Wave Inboard Motors for a comprehensive 4LV170 consultation and installation quote today. Our experts will help you determine if this powerful, compact V-6 is the perfect solution for your vessel’s propulsion needs.
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