Mikuni High Flow Rectangular Fuel PumpMIKUNI FUEL PUMP also known as the petcock valve or fuel valve. This valve can take the place of any fuel valve that is not connected to the bottom of gas tank. There are a lot of 150cc Chinese scooters that use a frame mount round fuel valve so this can take its place with a high quality fuel valve used in motorcycles. Can mount this one in the same place or mount somewhere it will get great flow from gravity. A lot of problems with Chinese scooters or any other is gas flow because of poor quality of parts and materials used in making the parts. This fuel pump solves many problems. If your 150cc is having mid range problems this could help or simply if your valve is not working at all get the best. **You may need bigger fuel lines for this installation.