Radiator Coolant Expansion Tank Bleeder Screw, Radiator Drain Plug,
Radiator Coolant Expansion Tank Bleeder Screw, Radiator Drain Plug, 17111712788 Coolant Air Bleeder Screw with Rubber O-Ring, Car Accessories Radiator Screws Compatible with X1 X3 X5. Easy installation: It is easy to install the radiator coolant expansion tank bleeder screw.