The Honda GX120 is a 0.12 L o.h.v. engine. It powers generator sets from SDMO, including the ST 2.36 H, TR 2.36 H and XC 2.34 H. It holds 0.6 L (0.2 gal) of oil.
Also known as: Honda GX120
Part of the Honda GX120 engine family — 2 variants share parts & fitment.
| Oil capacity | 0.6 L |
|---|---|
| Displacement | 0.118 L |
| Aspiration | O.H.V. |
| Fluid | Grade | Standard | Ambient | Capacity | Notes |
|---|---|---|---|---|---|
| Engine oil | SAE 15W40 | Sold by SDMO in 0.5 L (RBH0,5) and 1 L (RBH1) bottles |
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 |
|---|---|---|
| 17210Z4M821 | AIR CLEANER ELEMENT | Air filter |
| 17210ZE0505 | AIR CLEANER ELEMENT | Air filter |
| 17218ZE0505 | OUTER FILTER | Air filter |
| 17218ZE1507 | OUTER FILTER | Air filter |
| 20111 | LUBE, GEARBOX OIL ISO 680 22 OZ (650 ML) | Fluid |
| 17620Z4H900 | CAP W/FILTER, FUEL TANK | Fuel filter |
| 21046 | GASKET/SEAL KIT | Gasket |
| 21718 | PITCH CABLE | Hose |
| 21724 | THROTTLE CABLE | Hose |
| 21823 | THROTTLE CABLE | Hose |
| 10065 | F1825 | Service part / kit |
| 10567 | THRUST COLLAR | Service part / kit |
| 10607 | BEARING, THRUST 6207, SEALED BOTH SIDES | Service part / kit |
| 10639 | WEAR PLATE | Service part / kit |
| 17620Z0T305 | TANK CAP | Service part / kit |
| RBH0-5 | Box of 24 o.5L cans of oil or 20 1 L cans of oil (SAE 15W40) | Service part / kit |
| 21047 | KIT, BEARING/SEAL | Seal |
| 15510ZE1043 | OIL, LEVEL SW. | Sensor |
| 34150ZH7023 | OIL ALERT UNIT | Sensor |
| 9807956846 | SPARK PLUG | Spark plug |
| 28461Z4M305 | GRIP, RECOIL STARTER | Starter |
| 28461ZH8013 | GRIP, RECOIL STARTER | Starter |
| 28462ZH8003 | ROPE, RECOIL STARTER | Starter |
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.
The Honda GX120 engine has an oil capacity of 0.6 liters.
The Honda GX120 has a displacement of 0.118 liters.
The Honda GX120 powers 3 generator set(s), including SDMO ST 2.36 H, SDMO TR 2.36 H, SDMO XC 2.34 H.