Description

YANMAR 4LHA-STP 240HP Diesel Marine Inboard Engine – Maximum Power in a Compact Package

The YANMAR 4LHA-STP 240HP Diesel Marine Inboard Engine is engineered for serious performance, rugged reliability, and class-leading fuel efficiency. With a turbocharged, intercooled design and precise direct injection fuel system, this 4-cylinder engine delivers dependable propulsion for yachts, light-duty commercial vessels, and fishing boats.

At Marine Inboard Specialists, we provide diesel engines yanmar backed by expert service, global shipping, and a 5-year manufacturer’s warranty—ensuring peace of mind and long-term performance for your marine operations.

Why Choose the YANMAR 4LHA-STP 240HP Engine?

Whether you’re powering a new vessel or repowering an older hull, the YANMAR 4LHA-STP delivers industry-leading performance in a lightweight, compact format that fits a wide range of boats.

Key Advantages Of YANMAR 4LHA-STP 240HP Yanmar Diesel Motors:

  • High Output in a Compact Form
    Delivers 240HP at 3,300 RPM from a space-saving 4-cylinder block—ideal for boats with limited engine room space.

  • Turbocharged & Intercooled Design
    Ensures consistent power, superior torque, and stable engine performance under load.

  • Fuel-Efficient Direct Injection
    Reduces fuel consumption and emissions while maximizing cruising range.

  • Emission Compliant
    Fully meets IMO Tier 2, EPA Tier 2, and RCD 1 environmental standards.

  • Lightweight Construction
    With a dry weight of just 360 kg, installation is easy and doesn’t compromise vessel balance.

Ideal Applications

The YANMAR 4LHA-STP is suitable for a wide variety of marine applications, including:

  • Recreational yachts and powerboats

  • Light-duty commercial workboats

  • Fishing vessels and charter boats

  • Tenders, auxiliary craft, and service boats

Technical Specifications

Specification Details
Model Name YANMAR 4LHA-STP
Engine Type 4-Cylinder, 4-Stroke, Turbocharged & Intercooled
Rated Output 240HP (176 kW) @ 3,300 RPM
Displacement 3.455 Liters (211 cu. in)
Fuel System Direct Injection
Cooling System Freshwater Cooling with Heat Exchanger
Alternator 12V – 60A
Dry Weight (w/o gear) 360 kg / 794 lbs
Dimensions (L × W × H) 1089 mm × 707 mm × 754 mm
Controls Mechanical
Gearbox Options KMH50A or ZF63A
Certifications IMO Tier 2, EPA Tier 2, RCD 1
Warranty 5 Years (Manufacturer’s Warranty)

What’s Included with the YANMAR 4LHA-STP Package

When you purchase the YANMAR 4LHA-STP 240HP Diesel Marine Engine from Marine Inboard Specialists, your complete engine package includes:

  • Brand-new YANMAR 4LHA-STP engine

  • Turbocharger with intercooler

  • 12V – 60A alternator

  • KMH50A or ZF63A gearbox

  • Exhaust mixing elbow (L-Type)

  • Fuel pre-filter with water separator

  • Flexible engine mounts

  • Belt safety cover

  • Mechanical controls

  • Freshwater expansion tank

  • Wiring harness (5m) with connectors

  • Installation, operation, and maintenance manuals

Optional Accessories

Enhance and customize your setup with these performance-enhancing options:

  • High-Riser Exhaust Mixing Elbow

  • Extended Wiring Harness – Available in 3m, 5m, and 10m lengths

  • Spare Parts Kit – Keep essential components onboard for maintenance and emergency use

  • Hot Water Kit with Cocks – Connects to the cooling system for onboard comfort

  • IMO Tier III Compliance Kit – For stricter emission zones or future regulations

Warranty Coverage

The YANMAR 4LHA-STP is backed by a 5-Year Manufacturer’s Warranty, covering:

  • Defects in materials and workmanship

  • Valid for 2,000 operating hours or 5 years, whichever comes first

  • Supported by YANMAR’s global service network

  • Optional extended service packages available upon request

Frequently Asked Questions (FAQs)

1. What kind of boats is the 4LHA-STP engine suited for?
It’s ideal for recreational yachts, fishing vessels, light commercial boats, and auxiliary tenders.

2. Is the engine suitable for repowering older vessels?
Yes. Its compact size and lightweight design make it an excellent repower option.

3. How fuel-efficient is the engine?
The direct injection system ensures optimized fuel burn and reduced operating costs without sacrificing performance.

4. Does the engine meet global emissions standards?
Yes. It complies with IMO Tier 2, EPA Tier 2, and RCD 1 regulations.

5. What gearbox options are included?
The engine is supplied with a KMH50A or ZF63A gearbox, offering excellent power transfer and durability.

6. Can I get installation support?
Absolutely. Marine Inboard Specialists offers installation guidance, technical support, and access to certified marine technicians.

7. Do you ship internationally?
Yes. We offer fast, secure global shipping, delivering YANMAR engines across Europe, North America, Asia, and more.

Order Your YANMAR 4LHA-STP 240HP Engine Today

Maximize your vessel’s performance with the power and precision of the YANMAR 4LHA-STP 240HP Diesel Marine Inboard Engine. Trusted worldwide, YANMAR delivers the reliability you need at sea—backed by the expertise of Marine Inboard Specialists.

Contact us today for pricing, availability, or technical consultation.

Related products