Coolant tank bolt for BMW E30 E31 E36 E46 E34 E39 E53

Brass coolant system bleeder screw dedicated to BMW models E30, E31, E36, E46, E34, E39, and E53. This is a high-quality replacement for the original plastic screw, which is prone to damage and can lead to cooling system leaks. Replaces OEM part numbers: 17111712788, 17127515488, 17110141325.

- Thread: 10 mm x 1 mm

- Thread length: 12 mm

- Total length: 18 mm

- Head diameter: 16 mm