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4JH-T Marine

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

🚜 Base engine confirmed

The Yanmar 4JH-T is a Yanmar marine diesel in the 4JH family. Yanmar designs and sells both marine and industrial diesels; internal service parts for this family are listed in the 4JH 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)

55 hp40.5 kW
1644 ccdisplacement
78×86 mmbore × stroke
4-cylcylinders
1983–1989year range (approx)
Turboaspiration

turbo; ~55mhp mapped from Marine Specialists JH-TE; bore confirmed; hp=verify

📋 Full specifications 🚜 Industrial / tractor base 🔧 Aftermarket 54
Cheaper-part coverage · 4/8
🚜 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.

📚 Manuals & Sources
Specs— none yet
Operator's Manual— none yet
Service / Workshop Manual— none yet
Parts Catalog / List— none yet

External links — we host none of these documents.

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Category
Marine
Engine family
4JH-T
Year range (approx)
1983–1989
Cylinders
4
Rated output
55 hp (40.5 kW)
Bore × stroke
78 × 86 mm
Displacement
1644 cc
Max rpm
3600
Continuous rpm
3400
Aspiration
Turbocharged
Interactive engine page