Engine oil seals for Honda Dio scooters are rubber seals on the shafts. They keep oil from leaking out and air and dirt from getting in.
Replace them if oil is seeping, the crankcase has lost its seal, or the engine runs unevenly at idle. Oil seals are installed during an engine repair. The set is chosen by model.
- While you are at it, inspect the neighboring parts of the assembly: they often wear out together.
Manufacturer: NGK.
