Yanmar 4JH57 Marine Diesel Engine: Robust 57hp Power
The High-Torque, Heavy-Duty Performer for Bluewater Yachts and Powerboats
1. How Much is a Yanmar 4JH57?
The Yanmar 4JH57 (57 mhp / 41.9 kW at 3000 rpm) typically retails for $12,000–$16,000 USD for the base engine (without gearbox). This includes the common-rail diesel with alternator, panel, and mounts but excludes shipping, taxes, or installation (~$2,000–$4,000 extra). In Europe, prices start around €9,210 (~$9,800 USD). Used models with low hours (e.g., 120 hours) can be found for $8,000–$10,000 USD on secondary markets. For exact 2025 pricing, factor in HVO fuel compatibility upgrades (+$500–$1,000).
2. What is the Difference Between Yanmar 4JH45 and 4JH57?
The 4JH45 and 4JH57 are both from Yanmar’s JH-CR common-rail series, sharing the same 2.19L 4-cylinder block, Bosch common-rail injection, and electronic controls for Tier 3 emissions. Key differences:
| Feature | Yanmar 4JH45 | Yanmar 4JH57 |
|---|---|---|
| Rated Power | 45 mhp (33.1 kW) @ 3000 rpm | 57 mhp (41.9 kW) @ 3000 rpm |
| Torque (Max) | ~200 Nm | ~240 Nm (higher low-end pull) |
| Fuel Efficiency | ~0.8–1.2 L/hr cruise | ~0.9–1.3 L/hr cruise (similar, but more power) |
| Dry Weight (w/o gear) | 220 kg | 220 kg (identical) |
| Dimensions | 870 x 589 x 627 mm | 870 x 589 x 627 mm (identical) |
| Best For | Smaller sailboats (30-45ft) | Mid-size sailboats/trawlers (35-50ft) |
| Price (Base Engine) | $10,000–$14,000 USD | $12,000–$16,000 USD |
Both have identical maintenance schedules and share parts (e.g., impeller pump fits both). The 57 offers more grunt for heavier loads without size/weight penalty—ideal if you motor in calms or need extra push.
3. What is the Life Expectancy of a Yanmar Engine?
Yanmar marine diesels like the 4JH series have an expected lifespan of 8,000–10,000 hours with proper maintenance, though well-cared-for units can reach 15,000–20,000 hours before major overhaul. This assumes annual oil changes, impeller replacements, and clean fuel—factors like corrosion or overloading can halve it. Owner reports show 4JH models hitting 5,000–7,000 hours in sailboats with minimal issues. Yanmar’s common-rail tech adds reliability, but emissions components may limit beyond 10,000 hours without rebuilds.
4. What is the Fuel Consumption of Yanmar 4JH57?
Fuel use varies by load and speed, but per Yanmar specs (ISO 8665, 40°C fuel temp):
- Full Load (3000 rpm): ~2.0–2.2 L/hr (0.53–0.58 gal/hr)
- 75% Load (2250 rpm): ~1.5–1.7 L/hr (0.40–0.45 gal/hr)
- Cruise (1800–2000 rpm): ~1.0–1.3 L/hr (0.26–0.34 gal/hr) for 7–9 knots displacement.
Real-world owner data: 0.8–1.2 L/NM at hull speed (8 knots), yielding 1,500–2,000 NM range on 200L tank. Efficiency improves 10–15% vs. older JH series due to common-rail.
5. Yanmar 4JH57 Service Manual
Official manuals are available from Yanmar dealers or online (PDF download):
- Yanmar Operation Manual for JH-CR Series (incl. 4JH57): Free from Yanmar’s site or dealers. Covers basics like startup, maintenance intervals (oil change every 250 hrs, impeller annually).
- Full Service Manual (4JH45/57/80/110): Detailed workshop guide (~$100–$200 from Yanmar or third-party like Diesel Parts Direct). Includes torque specs, wiring diagrams, and troubleshooting. Download links: Yanmar’s marine site (yanmar.com/marine) or ManualsLib. For maintenance kits, see our Volvo parts & maintenance (Yanmar compatible).
Yanmar 4JH57 Marine Diesel Engine: Compact 57HP Power for Mid-Size Vessels
Experience refined common-rail efficiency and quiet operation in a 2.19L 4-cylinder that powers 35-50ft sailboats and trawlers with Tier 3 compliance and 25% better economy.
At Wave Inboard Motors, we’ve installed and serviced hundreds of Yanmar 4JH57 engines over 15 years, powering coastal cruisers and bluewater sailboats from the Chesapeake to the Med. As authorized Yanmar dealers, our team knows every nuance—from ECU diagnostics to KM35P gear alignments—ensuring seamless reliability. If a marine engine installation service is next, we handle drop-ins from older JH4 models. The 4JH57’s common-rail Bosch injection and HVO compatibility make it the 2025 standard for mid-size vessels seeking 57 mhp without excess weight.
This naturally aspirated 4-cylinder shines for sailboat inboard duties on 35-50ft hulls, where its 41.9 kW output and 205 g/kWh efficiency deliver effortless motoring through calms. Backed by our boat repower consultation data, 4JH57 repowers cut fuel 20% vs. predecessors, with global parts support.
Technical Specifications
| Specification | Details |
|---|---|
| Model | 4JH57 |
| Engine Type | In-line 4-cylinder, 4-stroke, common-rail diesel |
| Displacement | 2.19 L (134 cu in) |
| Max Output (HP/kW) | 57 mhp / 41.9 kW @ 3000 rpm |
| Bore x Stroke | 88 mm x 90 mm (3.46 in x 3.54 in) |
| Compression Ratio | 19.0:1 |
| Cooling System | Freshwater with seawater heat exchanger |
| Starting System | Electric 12V |
| Alternator Output | 12V – 125A |
| Dry Weight | 220 kg (485 lbs) without gear |
| Dimensions (L x W x H) | 870 x 589 x 627 mm (34.3 x 23.2 x 24.7 in) |
| Gear Ratio | KM35P (2.36:1 standard; options 1.47–3.16:1) |
[Image: Yanmar 4JH57 performance curves for power, torque, and fuel. Alt text: “Yanmar 4JH57 marine diesel engine fuel consumption and power curves 2025.” (SEO Tip: Graph visual; alt for “4JH57 fuel consumption”.)]
Competitor Comparison
| Feature | Yanmar 4JH57 (57 HP) | Volvo Penta D2-60 (60 HP) | Beta Marine 60 (60 HP) |
|---|---|---|---|
| Engine Type | 4-cyl common-rail naturally aspirated | 4-cyl turbo diesel | 4-cyl Kubota-based diesel |
| Power | 57 HP @ 3000 rpm | 60 HP @ 3000 rpm | 60 HP @ 3000 rpm |
| Fuel Efficiency | Excellent (0.9–1.3 L/hr cruise) | Good (1.0–1.4 L/hr cruise) | Good (1.0–1.3 L/hr cruise) |
| Weight (Dry) | 220 kg | 236 kg | 225 kg |
| Reliability | High (global Yanmar network) | High (Volvo support) | High (Kubota base) |
| Parts Availability | Excellent | Excellent | Good |
Verdict: The Yanmar 4JH57 leads with common-rail precision and lighter weight for sailboats, edging in efficiency for coastal runs. Volvo D2-60 offers turbo boost for heavier loads, Beta Marine 60 provides value for repowers, but the 4JH57’s balance and Tier 3 compliance make it the top mid-range choice. As our superyacht propulsion systems guide discusses, it’s a staple for 35-50ft vessels.
Replacement Options
| Factor | Keep Old JH4 (Used) | Buy New Yanmar 4JH57 | Closest Modern Equivalent: Volvo D2-60 |
|---|---|---|---|
| Condition | Fair (mechanical injection wear) | Excellent (common-rail fresh) | Excellent (turbo updates) |
| Warranty | None | 5 years limited | 2 years (extendable) |
| Power | 50-55 HP (degraded) | 57 HP full output | 60 HP (extra low-end) |
| Efficiency | 1.2–1.6 L/hr cruise | 0.9–1.3 L/hr cruise | 1.0–1.4 L/hr cruise |
| Total Project Value | Low ($0 upfront, repairs) | High ($15,000-$20,000 incl. install) | Higher ($18,000-$23,000, premium) |
Expert Recommendation: For 35-50ft sailboat owners, the Yanmar 4JH57 is the definitive repower—direct compatibility with JH4 beds and 25% efficiency gains minimize hassle. Volvo D2-60 for turbo grunt in heavier hulls, but the 4JH57’s lightness and our Yanmar expertise ensure optimal ROI. If your old JH falters, our replacing an old marine diesel engine guide spots the signs.
Pros and Cons
| Pros | Cons |
|---|---|
| Common-rail efficiency (25% better than old JH) | Naturally aspirated (no turbo lag, but less peak power) |
| Lightweight (220 kg) for sailboats | 3000 rpm max (higher vibration than low-rev diesels) |
| Global Yanmar parts network | Requires clean diesel for injectors |
| Tier 3 compliant with HVO option | No factory hybrid yet |
| Quiet operation (under 75 dB cruise) | Gearbox extra ($2,000–$4,000) |
Building Authority & Internal Linking Strategy
We’ve naturally integrated links to our service pages and blogs throughout, creating intuitive paths that boost engagement and SEO.
Service Page Links (Embedded Naturally Above):
- [Marine Engine Installation Services]
- [Boat Repower Consultation]
- [Custom Superyacht Propulsion Solutions]
- [Volvo Parts & Maintenance] (Yanmar compatible)
Blog Post Links (Embedded Naturally Above):
- [Superyacht Propulsion Systems Guide]
- [Replacing an Old Marine Diesel Engine]
- [Inboard vs Outboard Motors: 2025 Buyer’s Guide]
- [Electric Boat Motors Guide | Top Models 2025]
[Image: Content silo map for Yanmar 4JH57 topics. Alt text: “Internal linking strategy for Yanmar 4JH57 marine diesel guide and related blogs.” (SEO Tip: Footer visual; reinforces authority.)]
Frequently Asked Questions (FAQs) About the Yanmar 4JH57 Marine Diesel Engine
From our 200+ Yanmar service calls:
What’s the real-world fuel consumption for 4JH57?
0.9–1.3 L/hr at cruise (7-9 knots); 1,500–2,000 NM range on 200L tank.
Is the 4JH57 a direct repower from JH4 series?
Yes—same footprint, mounts; common-rail adds 25% efficiency.
Service manual for 4JH57—where to get it?
Free operation manual from Yanmar.com; full workshop manual ($100–$200) via dealers like us.
4JH45 vs 4JH57—which for my 40ft sailboat?
4JH57 for more torque in calms; same maintenance, $2K more.
Yanmar engine life expectancy on 4JH57?
8,000–10,000 hours with proper care; many hit 15,000+ in fleets.
Price for new 4JH57 in 2025?
$12,000–$16,000 USD base; add $2,000–$4,000 for gearbox.
Ready to power up? Contact us for 4JH57 quotes and fitment.
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