Description
The Yanmar 4JH4-TEP Engine Yanmar 4JH4-TEP is a dependable four-cylinder turbocharged marine diesel engine engineered for sailboats, cruising yachts, fishing vessels, and commercial marine applications. Renowned for its exceptional fuel efficiency, low maintenance requirements, and long operational life, the 4JH4 engine family has become one of the most trusted marine propulsion systems worldwide.
Whether you are replacing an aging marine engine or upgrading your vessel for improved reliability, the Yanmar 4JH4-TEP delivers impressive performance, smooth operation, and dependable power for both coastal cruising and offshore adventures.
The engine features Yanmar’s proven direct-injection diesel technology, robust cast-iron construction, and turbocharged performance that ensures excellent torque even at lower engine speeds. Official specifications for the closely related 4JH4-TE include a 1.995 L displacement, four cylinders, turbocharging, and a rated output of 75 mhp (55.2 kW) at 3,200 rpm.
Specifications
| Specification | Details |
|---|---|
| Engine Type | Four-Stroke Marine Diesel |
| Configuration | Inline 4-Cylinder |
| Aspiration | Turbocharged |
| Fuel System | Direct Injection |
| Cooling System | Fresh Water Cooled with Heat Exchanger |
| Displacement | 1.995 Liters |
| Bore × Stroke | 84 mm × 90 mm |
| Rated Power | Approximately 75 HP |
| Rated Speed | 3,200 RPM |
| Alternator | 12V – 125A |
| Dry Weight | Approx. 207 kg (456 lbs) |
| Controls | Mechanical |
| Starting System | Electric Start |
| Fuel Type | Diesel |
| Emission Compliance | EPA Tier 2 / EU RCD |
Specifications may vary slightly depending on production year and gearbox configuration.
Key Features
Reliable Turbocharged Performance
The turbocharger delivers strong acceleration and increased torque, making docking, maneuvering, and long-distance cruising easier even under heavy loads.
Excellent Fuel Economy
Yanmar diesel technology is engineered to maximize fuel efficiency while maintaining excellent power output, helping reduce operating costs over long voyages.
Fresh Water Cooling
A closed-loop fresh water cooling system protects internal engine components from corrosion while maintaining optimal operating temperatures.
Mechanical Fuel Injection
The Bosch VE mechanical injection pump provides reliable fuel delivery with straightforward servicing and dependable operation.
Compact Installation
The compact dimensions make the engine suitable for many sailboats and motor yachts where engine-room space is limited.
Common Applications
The Yanmar 4JH4-TEP is commonly installed in:
- Cruising sailboats
- Offshore sailing yachts
- Sport fishing boats
- Commercial workboats
- Charter vessels
- Small passenger boats
- Coastal patrol boats
- Catamarans
Benefits of the Yanmar 4JH4-TEP
- Proven Japanese engineering
- Exceptional reliability
- Smooth and quiet operation
- Excellent fuel efficiency
- Low emissions
- Long service intervals
- Worldwide parts availability
- Strong resale value
- Easy maintenance
- Trusted by marine professionals
Maintenance Recommendations
Routine maintenance helps maximize engine life:
- Change engine oil and oil filter regularly.
- Replace fuel filters according to the service schedule.
- Inspect seawater impeller and cooling system.
- Monitor coolant condition.
- Check belts and hose connections.
- Clean air intake components.
- Inspect turbocharger for proper operation.
- Service injectors when required.
Why Buy a Yanmar 4JH4-TEP Engine ?
Boat owners worldwide continue to choose the Yanmar 4JH4 series because it combines:
- Outstanding durability
- Low operating costs
- Excellent fuel consumption
- Reliable cold starting
- Smooth performance
- Global service support
- High-quality engineering
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