Yanmar 6LPA-STP2 Diesel Marine Engine – 315 HP Inboard Engine | JB Marine GmbH
Experience world-class performance with the Yanmar 6LPA-STP2 Diesel Marine Engine, now available at JB Marine GmbH, Germany’s trusted supplier of Yanmar marine diesel engines and propulsion systems.
Delivering 315 HP at 3800 RPM, this advanced inboard engine combines power, reliability, and efficiency to meet the high standards of today’s marine industry. Whether you operate a recreational yacht, commercial workboat, or offshore fishing vessel, the 6LPA-STP2 is built to exceed expectations with Japanese precision and German-backed service.
Engineered for Performance and Efficiency
The Yanmar 6LPA-STP2 embodies Yanmar’s engineering legacy, balancing compact design, fuel economy, and robust output in one dynamic package. With direct injection and two-stage fuel delivery, it optimizes combustion to ensure minimal fuel consumption and reduced emissions.
This model is part of the globally acclaimed Yanmar LPA series, known for long-term durability, smooth acceleration, and ease of maintenance, making it a preferred choice for repowering projects and new vessel installations alike.
Why Choose the Yanmar 6LPA-STP2 Marine Diesel Engine
Exceptional Power-to-Weight Ratio
Generating 315 horsepower from only 408 kg (899 lbs), the Yanmar 6LPA-STP2 achieves an outstanding power-to-weight balance—ideal for smaller or mid-size vessels demanding agility without sacrificing strength.
Optimized Fuel Efficiency
The innovative 2-stage direct injection system ensures precise fuel atomization, maximizing energy conversion and minimizing fuel wastage. Operators benefit from lower running costs and longer cruising range.
Turbocharged Durability
Equipped with a turbocharger and intercooler, this engine maintains consistent performance under heavy loads and high-temperature conditions. Its marine-grade components guarantee extended service life and dependable power delivery.
Global Emission Compliance
Environmentally conscious yet powerful, the Yanmar 6LPA-STP2 meets multiple international standards, including IMO Tier 2, EPA Tier 2, RCD 1, BSO II, EMC, and SOLAS.
It’s the responsible choice for operators who value both performance and sustainability.
Compact, Lightweight Design
With dimensions of 1220 mm × 666 mm × 739 mm, this engine offers exceptional installation flexibility—perfect for vessels with limited engine room space or complex retrofits.
Technical Specifications
| Specification | Details |
|---|---|
| Rated Output | 232 kW / 315 HP |
| Rated Speed | 3800 RPM |
| Displacement | 4.164 L / 254 cu in |
| Cylinders | 6 in-line |
| Combustion System | Direct Injection, 2-Stage Injection |
| Aspiration | Turbocharged & Intercooled |
| Alternator | 12 V – 80 A |
| Dry Weight (without gear) | 408 kg / 899 lbs |
| Dimensions (L × W × H) | 1220 mm × 666 mm × 739 mm |
| Controls | Mechanical |
| Certifications | IMO Tier 2 |
| Warranty | 5 Years |
| Shipping | Global Shipping Available |
Package Includes
When you purchase the Yanmar 6LPA-STP2 Diesel Marine Engine from JB Marine GmbH, you receive a complete installation-ready kit designed for seamless integration and long-term reliability.
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Turbocharger with Intercooler
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12 V – 80 A Alternator
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Fuel Pre-Filter with Water Separator
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Flexible Engine Mounts
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Exhaust Mixing Elbow
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ZF63A or ZF63IV Gearbox (for optimal power transfer)
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Mechanical Controls for smooth operation
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Belt Safety Cover
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Comprehensive User Manual for installation and maintenance
Optional Accessories
Enhance performance and flexibility with genuine Yanmar accessories supplied by JB Marine GmbH:
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High-Riser Exhaust Mixing Elbow (for specialized installations)
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Extended Wiring Harness (for remote mount applications)
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Hot Water Kit with Cocks (for onboard comfort systems)
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Spare Parts Kit (for routine maintenance and long voyages)
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IMO Tier III Compliance Kit (for low-emission zones and green operations)
Warranty & After-Sales Support
The Yanmar 6LPA-STP2 comes with a five-year manufacturer’s warranty covering materials and workmanship.
At JB Marine GmbH, we reinforce this with:
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Certified Yanmar after-sales support
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Genuine spare parts and filters
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Installation guidance from marine engineers
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Preventive maintenance and servicing solutions
We ensure every customer receives continuous support throughout the engine’s operational life.
Applications
The Yanmar 6LPA-STP2 Diesel Marine Engine is ideal for a wide spectrum of maritime uses:
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Recreational Yachts: Quiet, vibration-free power for smooth cruising.
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Commercial Workboats: Dependable performance for extended duty cycles.
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Fishing Boats: High torque output for hauling and towing.
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Offshore Support Vessels: Reliable propulsion for challenging environments.
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Patrol and Rescue Craft: Quick acceleration and precision control when it matters most.
Frequently Asked Questions (FAQs)
Which vessels are compatible with the Yanmar 6LPA-STP2?
It’s suited for recreational yachts, fishing boats, and small-to-medium commercial vessels.
How fuel-efficient is it?
The 2-stage direct injection system optimizes combustion for superior fuel economy, cutting consumption without compromising power.
What emission standards does it meet?
Complies with IMO Tier 2, EPA Tier 2, RCD 1, and SOLAS—ready for worldwide operations.
Can it be used for repowering?
Yes. Its lightweight, compact design makes it a top choice for repowering older vessels.
What’s included in the package?
Engine, turbocharger, alternator, exhaust mixing elbow, gearbox, and comprehensive manual.
Which gearbox options are available?
Choose between ZF63A or ZF63IV, engineered for efficient torque transfer and smooth navigation.
What does the 5-year warranty cover?
Covers manufacturing defects and material issues for worry-free operation.
Does JB Marine GmbH offer installation support?
Yes — we provide technical consultation, installation advice, and access to certified Yanmar service technicians.
Why Choose JB Marine GmbH
As a leading Yanmar marine engine supplier in Germany, JB Marine GmbH delivers more than engines; we deliver trust, reliability, and lifetime value.
Our Core Advantages
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Factory-backed warranties & genuine parts
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Expert marine engineering consultation
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Fast worldwide shipping and logistics support
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Full after-sales care and preventive maintenance services
Whether you’re upgrading, repowering, or commissioning a new build, JB Marine GmbH ensures your Yanmar engine investment performs flawlessly for years to come.
Contact JB Marine GmbH
Upgrade your vessel with the high-performance Yanmar 6LPA-STP2 Diesel Marine Engine – 315 HP. Contact JB Marine GmbH today for current pricing, technical specifications, and expert guidance.
