The Yanmar 3TNE78A engine line groups 2 variant designations. Parts and fitment are pooled here so a cross-reference found on one variant surfaces for the whole family.
| Part # | Description | Category |
|---|---|---|
| 129619-12520 | Housing | Air filter |
| 119831-42290 | Drive Belt | Belt |
| 6-1001 | Control panel | Control panel |
| 119810-55650 | Element | Fuel filter |
| 104200-59170 | Gasket | Gasket |
| 119813-12110 | Intake Manifold Gasket | Gasket |
| 119813-13110 | Exhaust Manifold Gasket | Gasket |
| 119818-01330 | Cylinder Head Gasket | Gasket |
| 119865-11310 | Bonnet Gasket | Gasket |
| 121000-13201 | Gasket Manifold to Muffler | Gasket |
| 124240-01883 | Gasket | Gasket |
| 124465-44950 | Gasket | Gasket |
| 129150-32020 | Gasket | Gasket |
| 129150-35041 | Gasket | Gasket |
| 129150-35111 | Gasket | Gasket |
| 129150-42020 | Cooling Water Pump Gasket | Gasket |
| 129150-49811 | Gasket | Gasket |
| 129150-77511 | Gasket | Gasket |
| 129155-52020 | Gasket | Gasket |
| 129795-49551 | Gasket | Gasket |
| 23414-100000 | Gasket | Gasket |
| 719989-92600 | Gasket Set | Gasket |
| 977770-01212 | Liquid Gasket | Gasket |
| 119820-44560 | Hose, Radiator Inlet | Hose |
| 129619-12210 | Hose | Hose |
| 171301-49010 | Hose, Radiator Inlet | Hose |
| 171301-49020 | Hose, Radiator Outlet | Hose |
| 41-01012 | 74" Hose 5/16" ID Push-On | Hose |
| 119818-53000 | Nozzle Assembly | Injector |
| 719800-53100 | Fuel Injector | Injector |
| 24-07301 | Filter | Oil filter |
| 22-40018 | Circuit Breaker 10 Amp | Service part / kit |
| 22-42047 | Relay, SPDT 12V 50A | Service part / kit |
| 119810-42001 | Coolant Pump | Pump |
| 129001-32001 | Oil Pump Assembly | Pump |
| 129100-52100 | Fuel Feed Pump | Pump |
| 719989-51310 | Injection Pump | Pump |
| 102103-55520 | O-Ring | Seal |
| 119810-01780 | Oil Seal | Seal |
| 121850-51960 | O-Ring | Seal |
| 124160-11340 | SEAL, VALVE STEM | Seal |
| 124950-11340 | SEAL, VALVE STEM | Seal |
| 129129-77350 | O-Ring | Seal |
| 129150-42320 | O-Ring | Seal |
| 129795-01800 | Oil Seal | Seal |
| 15-01001 | Sealing Washer | Seal |
| 22190-080002 | Seal Washer | Seal |
| 22190-220002 | Seal Washer | Seal |
| 24311-000120 | O-Ring | Seal |
| 24311-000160 | O-Ring | Seal |
| 24311-000320 | O-Ring | Seal |
| 24311-240100 | O-Ring | Seal |
| 24341-000240 | O-Ring | Seal |
| 24341-000280 | O-Ring | Seal |
| 24341-000500 | O-Ring, 1A S-50.0 | Seal |
| 719810-01650 | Rear Main Seal Assembly | Seal |
| 119600-34800 | Oil Pressure Switch | Sensor |
| 121250-44901 | Temperature Switch 110°C | Sensor |
| 121460-39450 | Pressure Switch | Sensor |
| 22-41016 | Oil Pressure Sender 0-80 PSI, Single Station 1/8 NPT | Sensor |
| 22-45201 | Temperature Sender 250°F Standard Ground | Sensor |
| 129155-49800 | Thermostat | Thermostat |
Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.
Leads compiled from supplier catalogs across the family’s variants; verify the exact part for your variant and serial number.