8/10/12mm Inline Oneway Non-Return Check Valve Fuel Water Gas Air Vacuum Aluminu

Material: Aluminu+NBR Rubber. For Use With Petrol, Diesel, Bio / Vegetable oil, Paraffin / Kerosene oil, etc. In this way, this product can perfectly solve the problem that your vehicle is hard or slow to start because the fuel is running back through the lines.

eBay