Yanmar 4LHA-STP 240HP Diesel Marine Engine – Compact Power and Proven Efficiency | JB Marine GmbH

JB Marine GmbH, Germany’s authorized distributor of Yanmar marine diesel engines, proudly presents the Yanmar 4LHA-STP 240HP Diesel Marine Engine — a compact yet powerful inboard solution engineered for reliability, performance, and long-term durability.

Delivering 240 horsepower (176 kW) at 3,300 RPM, this 4-cylinder, turbocharged diesel engine offers the perfect balance of power and efficiency for recreational yachts, fishing vessels, workboats, and small commercial craft. Built to Yanmar’s exacting standards, the 4LHA-STP provides smooth operation, low vibration, and fuel-efficient performance for any marine application.

Overview – Reliable Power in a Compact Package

The Yanmar 4LHA-STP is a 4-cylinder, 4-stroke turbocharged diesel engine designed for exceptional reliability in both leisure and light commercial vessels. Combining direct fuel injection, intercooling, and marine-grade construction, it ensures maximum power output with minimum fuel consumption.

Its compact dimensions and low weight (360 kg) make it an ideal solution for vessels with limited engine space or repowering older boats that require modern performance and emissions compliance.

Built to meet IMO Tier II, EPA Tier II, and RCD 1 standards, this engine offers environmentally responsible performance without compromising power or durability.

Why Choose the Yanmar 4LHA-STP Diesel Marine Engine?

 Compact Yet Powerful

Produces 240HP at 3,300 RPM with a lightweight, space-saving design ideal for smaller vessels or limited engine compartments.

Fuel Efficiency You Can Rely On

The direct injection combustion system ensures precise fuel delivery for optimized consumption, lower operational costs, and longer range.

Environmentally Friendly Operation

Complies with IMO Tier II, EPA Tier II, and RCD 1 emissions standards for reduced environmental impact and clean combustion.

Turbocharged Performance

A turbocharger with an intercooler guarantees strong torque, reliable acceleration, and consistent power output under all load conditions.

Built for Longevity

Constructed using marine-grade corrosion-resistant materials, ensuring outstanding durability in saltwater environments.

Global Reach, Local Expertise

JB Marine GmbH provides genuine Yanmar engines with fast international shipping, technical consultation, and full warranty support.

Technical Specifications – Yanmar 4LHA-STP

Product Package – What’s Included

Each Yanmar 4LHA-STP Diesel Marine Engine supplied by JB Marine GmbH comes as a complete package ready for installation:

• Yanmar 4LHA-STP Engine

• Turbocharger with Intercooler

• Alternator (12V – 60A)

• Fuel Pre-Filter with Water Separator

• Flexible Engine Mounts

• Exhaust Mixing Elbow

• KMH50A or ZF63A Gearbox (configured to vessel specs)

• Mechanical Controls for precise throttle response

• Belt Safety Cover

• Installation, Operation & Maintenance Manual

All components are factory-tested and Yanmar-certified, ensuring optimal performance and reliability.

Optional Accessories

Customize and enhance your Yanmar 4LHA-STP engine setup with genuine Yanmar accessories available from JB Marine GmbH:

• High-Riser Exhaust Mixing Elbow for specialized installations

• Spare Parts Kit for onboard maintenance

• Extended Wiring Harness for remote installations (3m, 5m, or 10m)

• Hot Water Kits with Cocks for onboard systems

• IMO Tier III Compliance Kit for stricter emissions standards

All accessories are OEM-approved to ensure full compatibility and sustained engine performance.

Warranty & After-Sales Support

Your Yanmar 4LHA-STP 240HP Diesel Marine Engine is backed by a 5-Year Manufacturer Warranty, covering defects in materials and workmanship.

With JB Marine GmbH, you also receive:

• Authorized Yanmar warranty registration and support

• Genuine spare parts and consumables

• Certified installation and commissioning services

• Professional maintenance and repair guidance

• Fast global shipping and responsive customer service

Our commitment ensures your Yanmar engine continues to perform with maximum efficiency and reliability for years to come.

Applications – Versatility Meets Performance

The Yanmar 4LHA-STP Diesel Marine Engine is engineered to serve a wide range of marine applications:

• Recreational Yachts: Smooth, efficient propulsion for luxury and leisure craft.

• Small Commercial Boats: Reliable and economical power for professional use.

• Fishing Vessels: Consistent torque and endurance for hauling and towing operations.

• Tenders and Workboats: Compact and rugged for auxiliary propulsion or harbor duties.

With its combination of lightweight design, fuel economy, and proven performance, the 4LHA-STP is a trusted choice for marine professionals worldwide.

Frequently Asked Questions (FAQs)

What types of vessels can the Yanmar 4LHA-STP power?
It’s suitable for recreational yachts, fishing boats, small commercial vessels, and tenders.

Is it fuel-efficient?
Yes — the direct injection system ensures precise combustion, optimizing fuel economy and reducing running costs.

Does the engine meet emissions standards?
Absolutely. It meets IMO Tier II, EPA Tier II, and RCD 1 regulations.

Can I use this engine for repowering older boats?
Yes. Its lightweight and compact dimensions make it ideal for efficient repowering projects.

What gearbox options are available?
You can choose between KMH50A or ZF63A gearboxes for smooth and reliable power transfer.

What does the 5-year warranty cover?
It covers all defects in materials and workmanship under normal marine use.

 Does JB Marine GmbH offer installation and support?
Yes — we provide full installation assistance, maintenance services, and access to genuine Yanmar parts.

Why Choose JB Marine GmbH – Your Yanmar Marine Partner in Germany

At JB Marine GmbH, we deliver genuine Yanmar engines with uncompromising quality and service excellence.

Why professionals trust us:

• Authorized Yanmar Marine Dealer

• Certified Marine Technicians and Engineers

• Genuine OEM Spare Parts and Accessories

• Expert Technical Guidance and Configuration Support

• Fast and Secure Global Shipping

• Dedicated After-Sales and Warranty Support

With JB Marine GmbH, your vessel’s performance is powered by the best in Yanmar engineering and supported by unmatched expertise.

Contact JB Marine GmbH – Order Your Yanmar 4LHA-STP 240HP Diesel Marine Engine Today

Enhance your vessel with the Yanmar 4LHA-STP 240HP Diesel Marine Inboard Engine, delivering compact power, reliability, and superior fuel efficiency.

Contact JB Marine GmbH today for pricing, configuration support, and global delivery options. Power your marine journey with Yanmar performance and JB Marine reliability.