General description When working on common rail diesel (CRD) fuel systems, it is essential to avoid dirt getting into the fuel system. The Laser Tools Injection Rail Blanking Plugs are designed to seal off the fuel rail, preventing the ingress of dirt and allowing individual injectors to be blanked off for further diagnostic tests. This kit is ideal for sealing off injector ports on the rail one by one to diagnose fuel system pressure loss. Technical specifications Internal thread and sealing cones: sizes 6 x M12 x 1.5mm and 6 x M14 x 1.5mm Fits most common rail injection rail sizes Usage Essential kit for diesel fuel system high pressure diagnostics Ideal to ensure dirt is kept out of open fuel rails