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4JH3E Marine

Yanmar 4JH3E · 4JH family: specifications, its industrial/tractor base engine, cross-referenced parts and where to buy them.

🚜 Base engine confirmed

The Yanmar 4JH3E is a Yanmar marine diesel in the 4JH3E family. Yanmar designs and sells both marine and industrial diesels; internal service parts for this family are listed in the 4JH3E parts book and often sell cheaper through industrial/agricultural channels than under marine dealer pricing. — Yanmar OEM parts catalog in-repo (brands/yanmar/data/extracted/catalogs.csv)

56 hp41.2 kW
1995 ccdisplacement
84×90 mmbore × stroke
4-cylcylinders
223 kgengine dry
1999–2005year range (approx)
NAaspiration

max 56mhp@3800 / cont 50mhp@3650 (Yanmar JH brochure)

📋 Full specifications 9 🚜 Industrial / tractor base 🔧 Aftermarket 56
Cheaper-part coverage · 6/8
🚜 Base engine ✓🌀 Impeller ✓💧 Raw-water pump ✓🛢️ Oil filter⛽ Fuel filter ✓🌡️ Thermostat ✓➰ Belt ✓⚓ Anode

A ✓ means at least one cheaper channel — aftermarket, the tractor/industrial base engine, or a standard component — exists for this engine in that category.

Parts by section · 71 assemblies

The exploded parts diagrams for the 4JH3E, grouped by system. Open a figure for its callout part numbers and per-variant quantities.

Bilge & accessory pumps

Fig 33 — BILGE PUMP(STD)Fig 34 — BILGE PUMP(DX)

Camshaft & timing gears

Fig 3 — GEAR HOUSING(4JH3E)Fig 4 — GEAR HOUSING(4JH3-TE)Fig 17 — CAMSHAFT

Cooling – fresh water

Fig 27 — COOLING FRESH WATER PUMPFig 28 — COOLING FRESH WATER COOLERFig 31 — COOLING FRESH WATER PIPE

Cooling – sea water

Fig 26 — COOLING SEA WATER PUMPFig 29 — C.S.W.PIPE(4JH3E)Fig 30 — C.S.W.PIPE(4JH3-TE)Fig 32 — C.S.W.STRAINER(OPTIONAL)

Crankshaft & flywheel

Fig 5 — FLYWHEEL HOUSINGFig 18 — CRANKSHAFT & FLYWHEEL

Cylinder block

Fig 1 — CYLINDER BLOCK(4JH3E)Fig 2 — CYLINDER BLOCK(4JH3-TE)

Cylinder head & valves

Fig 11 — CYLINDER HEAD(4JH3E)Fig 12 — CYLINDER HEAD(4JH3-TE)Fig 13 — BONNET

Electrical & instruments

Fig 44 — ENGINE STOP DEVIC(4JH3E)Fig 45 — ENGINE STOP DEVIC(4JH3-TE)Fig 46 — STARTING MOTOR(4JH3E)Fig 47 — STARTING MOTOR(4JH3-TE)Fig 54 — WIRE HARNESS & SENSORFig 55 — WIRE HARNESS(EARTH FLOAT TYPE)Fig 56 — INSTRUMENT PANEL(B:4JH3E)Fig 57 — INSTRUMENT PANEL(B:4JH3-TE)Fig 58 — INSTRUMENT PANEL(C:4JH3E:PRE.)Fig 59 — INSTRUMENT PANEL(C:4JH3E)Fig 60 — INSTRUMENT PANEL(C:4JH3-TE)Fig 62 — INSTRUMENT PANEL(D:4JH3-TE)Fig 63 — INSTRUMENT PANEL(E:4JH3-TE)Fig 64 — PANEL(B:NEW TYPE:4JH3E)Fig 65 — PANEL(B:NEW TYPE:4JH3-TE)Fig 66 — PANEL(C:NEW TYPE:4JH3E)Fig 67 — PANEL(C:NEW TYPE:PREVOUS)Fig 68 — PANEL(C:NEW TYPE:4JH3-TE)Fig 69 — PANEL(D:NEW TYPE:4JH3-TE)

Fuel injection pump & governor

Fig 35 — FUEL INJECTION PUMP(4JH3E)Fig 36 — FUEL INJECTION PUMP(4JH3-TE)Fig 37 — GOVERNORFig 38 — FUEL FEED PUMP & TIMER

Fuel injectors & nozzles

Fig 39 — FUEL INJECTION VALVE

Fuel lines, tank & filter

Fig 40 — FUEL INJECTION PIPEFig 41 — FUEL PIPE(4JH3E)Fig 42 — FUEL PIPE(4JH3-TE)Fig 43 — FUEL TANK

Generator (genset)

Fig 48 — GENERATOR(4JH3E:PREVIOUS)Fig 49 — GENERATOR(4JH3E:NEW)Fig 50 — GENERATOR(4JH3E:OPTIONAL)Fig 51 — GENERATOR(4JH3-TE)Fig 52 — GENERATOR(4JH3-TE:PREVIOUS)Fig 53 — GENERATOR(4JH3-TE:NEW)

Intake and Exhaust

Fig 14 — SUCTION MANIFOLDFig 15 — TURBOCHARGERFig 16 — TURBOCHARGER COMPONENT PART

Lubricating

Fig 8 — LUB.OIL SUMP(4JH3E)Fig 9 — LUB.OIL SUMP(4JH3-TE)Fig 21 — LUB.OIL COOLER(4JH3E)Fig 22 — LUB.OIL COOLER(4JH3-TE)Fig 23 — LUB.OIL PIPE(4JH3-TE)Fig 24 — LUB.OIL SYSTEM(4JH3E)Fig 25 — LUB.OIL SYSTEM(4JH3-TE)

Mounting

Fig 6 — MOUNTING FOOT(4JH3E)Fig 7 — MOUNTING FOOT(4JH3-TE)

Pistons, rods & liners

Fig 19 — PISTON(4JH3E)Fig 20 — PISTON(4JH3-TE)Fig 71 — CUPRING

Tools & labels

Fig 10 — LABELFig 72 — TOOL

Transmission & drive

Fig 70 — CLUTCH
📚 Manuals & Sources
Specs— none yet
Operator's Manual— none yet
Service / Workshop Manual— none yet
Parts Catalog / List— none yet
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Category
Marine
Engine family
4JH
Year range (approx)
1999–2005
Cylinders
4
Rated output
56 hp (41.2 kW)
Bore × stroke
84 × 90 mm
Displacement
1995 cc
Max rpm
3800
Continuous rpm
3650
Aspiration
Naturally aspirated
Dry weight (engine)
223 kg

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