When working on diesel fuel systems, it is important to avoid allowing dirt to enter the fuel system. These plugs seal off the fuel rail, and also allow individual injectors to be blanked off to allow diagnosis of fuel system pressure loss.

• Internal thread sizes: M12 x 1.5mm (6 pcs) | M14 x 1.5mm (6 pcs)
• Applications: Bosch | Denso | Delphi | Siemens injectors
• Fits most common rail injection rail sizes.