Oil capacity varies by variant: 5.5 L (S4Q2), 6.5 L (S4Q2-SD), 6.5 L (S4Q2-Y362SD), 6.5 L (S4Q2-Z361SD), 6.5 L (S4Q2.Y262SD). The Mitsubishi S4Q2 engine line groups 10 variant designations. Parts and fitment are pooled here so a cross-reference found on one variant surfaces for the whole family.
| Variant | Displacement | Cylinders | Rated rpm | Oil capacity | Coolant |
|---|---|---|---|---|---|
| S4Q2 | 2.5 L | 4 | 1,500 | 5.5 L (5.8 qt) | 8.1 L |
| S4Q2-61MOG | 2.5 L | 4 | 1,800 | — | — |
| S4Q2-SD | 2.5 L | 4 | 1,500 | 6.5 L (6.9 qt) | 8.1 L |
| S4Q2-Y362SD | 2.5 L | 4 | 1,800 | 6.5 L (6.9 qt) | 6 L |
| S4Q2-Y365DGY | — | 4 | 1,800 | — | — |
| S4Q2-Z361SD | 2.5 L | 4 | 1,500 | 6.5 L (6.9 qt) | 6 L |
| S4Q2.Y262SD | 2.5 L | 4 | 1,800 | 6.5 L (6.9 qt) | 5.5 L |
| S4Q2G | 2.5 L | — | — | — | — |
Each figure is from that variant’s own documents (see its engine page for sources). Oil capacity can differ between applications of the same engine; check the manual for your generator set.
| Part # | Description | Category |
|---|---|---|
| 30801032101NE | Dusty air filter assembly | Air filter |
| 330170365 | Belt | Belt |
| 330910098 | Coolant GENCOOL (20L) | Fluid |
| 330910115 | Oil GENLUB TDX 20L | Fluid |
| 330170614 | Water pump gasket | Gasket |
| 330170777 | Exhaust gasket | Gasket |
| 330170780 | Gasket | Gasket |
| 330170844 | Gasket | Gasket |
| 330171211 | Gasket | Gasket |
| 330171571 | Gasket | Gasket |
| 330171575 | Gasket | Gasket |
| 330171484 | Durit | Hose |
| 330171692 | Durit | Hose |
| 330171942 | Lower Durit | Hose |
| 330171943 | Upper radiator Durit | Hose |
| 330170272 | Oil filter | Oil filter |
| AEHQ5682-03 | 304C CR Mini Hydraulic Excavator | Service part / kit |
| AEHQ5683 | 305C CR Mini Hydraulic Excavator | Service part / kit |
| AEHQ5683-03 | 305C CR Mini Hydraulic Excavator | Service part / kit |
| AEHQ6016 | 904H Compact Wheel Loader | Service part / kit |
| 31810015101NK | Oil drain pump assembly | Pump |
| 330170513 | Water pump | Pump |
| 330170581 | Oil pump | Pump |
| 31101077801NK | 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.
Leads compiled from supplier catalogs across the family’s variants; verify the exact part for your variant and serial number.