The Mitsubishi S4S-Y3DT61SD is a 3.33 L 4-cylinder turbo engine rated at 1800 rpm, producing up to 43.9 kW. It powers generator sets from Kohler, including the 40REOZT. It holds 10 L (2.6 gal) of oil and 9.5 L (2.5 gal) of coolant.
Also known as: Mitsubishi S4S-Y3DT61SD
Part of the Mitsubishi S4S engine family — 12 variants share parts & fitment.
| Oil capacity | 10.0 L |
|---|---|
| Coolant capacity | 9.5 L |
| Displacement | 3.33 L |
| Cylinders | 4 |
| Aspiration | Turbo |
| Rated speed | 1800 rpm |
| Gross power | 43 kW |
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | Dusty air filter assembly | 30801093801NK | Amazon eBay | ||
| Oil filter | Oil filter | 330171693 | Amazon eBay | ||
| Belt | Fan belt | 330171694 | Amazon eBay | ||
| Coolant | GENCOOL | 9.5 L | 330910098 | 2 hr | Amazon eBay |
| Oil | GENLUB TDX | 10.0 L | 330910115 | Amazon eBay |
Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.
| Voltage | Phase | Connection | Leads | Notes |
|---|---|---|---|---|
| 12-lead optional voltage connections | 12 | Alternator optional feature | ||
| 4-lead dedicated voltages | 4 | Alternator standard feature | ||
| 110/127/139/240/254/277 | single-phase | switchable | Towable generator model specifications; some models n/a | |
| 208/220/240/415/440/480 | 3-phase | reconnectable | Towable generator model specifications | |
| 208/220/240/415/440/480 | 3-phase | switchable | Towable generator model specifications |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
| Part # | Description | Category |
|---|---|---|
| 30801093801NK | Dusty air filter assembly | Air filter |
| 330171694 | Fan belt | Belt |
| 330910098 | Coolant GENCOOL (20L) | Fluid |
| 330910115 | Oil GENLUB TDX 20L | Fluid |
| 32413-03200 | Oil pan common gasket | Gasket |
| 32491-05100 | Three Bond 1207C liquid gasket | Gasket |
| 330170438 | Water pump gasket | Gasket |
| 330170458 | Exhaust gasket | Gasket |
| 330171211 | Gasket | Gasket |
| 330171528 | Gasket | Gasket |
| 330171591 | Gasket | Gasket |
| 330171670 | Gasket | Gasket |
| 330171736 | Gasket | Gasket |
| 330172339 | Cover gasket | Gasket |
| 330171462 | Bottom radiator hose | Hose |
| 330171463 | Upper radiator Durit | Hose |
| 330171592 | Durit | Hose |
| 330171675 | Durit | Hose |
| 330172341 | Durit | Hose |
| 330171693 | Oil filter | Oil filter |
| 330171425 | Radiator cap | Service part / kit |
| 330171721 | Plug | Service part / kit |
| 31810066301NK | Oil drain pump flexible assembly | Pump |
| 330170721 | Oil pump | Pump |
| 330172276 | Water pump | Pump |
| 330171604 | O ring | Seal |
| 31101084601NK | Coolant temp. and oil pressure sender assembly | Sensor |
| 330170377 | Thermostat | Thermostat |
Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.
Parts listed by aftermarket suppliers as fitting this engine — leads compiled from supplier catalogs; verify the exact part for your serial number.
Other equipment known to use this engine, via filter-application cross-reference — useful for sourcing parts even when your exact machine isn't listed elsewhere on this page.
The Mitsubishi S4S-Y3DT61SD engine has an oil capacity of 10.0 liters.
The Mitsubishi S4S-Y3DT61SD has a displacement of 3.33 liters with 4 cylinders.
The Mitsubishi S4S-Y3DT61SD powers 1 generator set(s), including Kohler 40REOZT.