Yanmar 4JH57 Inboard Diesel Engine
Used Yanmar 4JH57 Inboard Diesel Engine Specs
| Brand / Manufacturer | Yanmar Marine International |
| Full Model Code | 4JH57 (Common Rail JH Series) |
| Engine Type | 4-Stroke, Vertical, Water-Cooled In-line 4 Diesel Propulsion Engine |
| Rated Output (Crankshaft) | 41.9 kW (57 mhp) @ 3000 RPM (ISO 8665) |
| Number of Cylinders | 4 Cylinders In-line (16-Valve Configuration) |
| Displacement Size | 2.190 Liters (133.6 cubic inches) |
| Bore x Stroke | 88 mm x 90 mm (3.46" x 3.54") |
| Combustion System | Direct Injection with Bosch High-Pressure Common Rail Infrastructure |
| Aspiration Type | Naturally Aspirated (Natural Atmospheric Common Rail Integration) |
| Electrical System Voltage | 12V DC Standard Double-Pole System (1.4 kW Starter Motor) |
| Charging Alternator Spec | Standard Factory High-Output 12V - 125A Alternator Component |
| Cooling System Layout | Closed Fresh Water Loop via Centrifugal Pump with Seawater Heat Exchanger Circuit |
| Engine Management | Full Digital Electronic Controls supporting Yanmar VC20 Vessel Control System |
| Crankshaft Rotation | Counterclockwise (CCW) viewed from stern looking forward onto the flywheel |
| Dry Weight (Without Gear) | 220.0 kg (485.0 lbs) Baseline Dry Bobtail Weight |
| Dimensions L x W x H | 873 mm x 573 mm x 631 mm (34.4" x 22.5" x 24.8") Structural Footprint |
| Emission Certifications | EPA Tier 3, IMO Tier 2, EU RCD 2, BSO II, and EMC Compliant Status |
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