Yanmar 4JH57 – Marine Diesel Engine 57 HP
Soot-free exhaust transom discharges distinguish this Yanmar 4JH57 inboard engine, which atomizes common rail fuel across a 2.19L 4-cylinder block to generate 57 HP and 125 Amps through an SD60 saildrive at 485 lbs.
- Common rail injection stops transom soot
- 125-Amp alternator supports heavy radar suites
- SD60 saildrive simplifies modern sailboat rigging
- SAE 4 housing matches standard gearboxes
- 2.19L block maintains 3000-RPM cruising speed
$7,378.00
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Using common rail injection with 57 hp at 3,000 rpm, the Yanmar 4JH57 is a naturally aspirated 2.19L inline four-cylinder marine diesel engine. Its 17.0:1 compression ratio and EN 590 diesel requirement define the specified fuel-system setup. The engine supports KM35A2, KM35P, or SD60 drive arrangements, while mechanical or saildrive transmission options and electronic-control compatibility shape the documented installation configuration.
The engine weighs 485 pounds dry and uses an SAE 4 flywheel housing. A 12V, 125-amp alternator supplies the stated charging output, while enclosed forced lubrication uses 5.0L oil capacity. Heat-exchanger cooling holds 7.2L coolant, the wet mixing elbow supports the stated exhaust configuration, and listed emissions include EPA Tier 3, RCD II, and BSO II.
Why Choose the Yanmar 4JH57 Marine Diesel Engine
The 4JH57 marine diesel engine combines 57 hp output with a naturally aspirated 2.19L four-cylinder platform and common rail injection. Buyers comparing propulsion packages can review its 12V 125-amp alternator, electronic-control compatibility, mechanical or saildrive options, and KM35A2, KM35P, or SD60 drive configurations. The documented EPA Tier 3, RCD II, and BSO II emissions ratings further define this engine specification.
Warranty and Support
This model is eligible for Yanmar’s 3-Year Extended Limited Warranty program for first retail purchasers, subject to private and recreational use requirements. can assist with product details and order-related questions before purchase. Please review the warranty coverage and eligibility details on before purchase.
Before Ordering the Yanmar 4JH57 Marine Diesel Engine
Before ordering, verify engine-bed dimensions, mount locations, selected transmission type, SAE 4 flywheel-housing compatibility, and KM35A2, KM35P, or SD60 drive requirements. Confirm your vessel uses EN 590 diesel and has suitable provisions for fuel supply, cooling-water intake, wet exhaust, electronic controls, 12V charging wiring, ventilation, propeller or saildrive alignment, and professional installation.
Product Specifications
Yanmar 4JH57 Full Specs
| Engine type | In-line 4, 4-stroke Diesel |
|---|---|
| Displacement | 2.19L (134 cid) |
| Bore x stroke | 88 x 90 mm |
| Horsepower | 57 hp (41.9 kW) |
| Rated rpm | 3000 rpm |
| Aspiration | Naturally Aspirated |
| Compression ratio | 17.0:1 |
| Fuel system | Common Rail Injection |
| Recommended fuel | Diesel (EN 590) |
| Ignition/Firing Order | Compression / 1-3-4-2 |
| Alternator | 12V, 125 Amp |
| Gear ratio/Drive | KM35A2 / KM35P / SD60 |
| Transmission | Mechanical / Saildrive |
| Dry weight | 220 kg (485 lbs) |
| Flywheel housing | SAE 4 |
| Steering | Electronic Control compatible |
| Coolant capacity | 7.2L |
| Exhaust system | Mixing elbow (Wet type) |
| Cooling system | Heat Exchanger |
| Lubrication | Enclosed, Forced lubrication |
| Oil capacity | 5.0L |
| Emissions rating | EPA Tier 3, RCD II, BSO II |
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