Direct-fit titanium coolant bleed screw for B48 and B58 engines - proven on BMW, MINI R55-R61 (including Cooper S and JCW), and Toyota GR Supra Mk5. Replaces brittle OEM plastic units like 11537793373, 17111712788 and 17110141325.
Grade 5 titanium, CNC-machined and hand-burnt for corrosion resistance and repeat heat cycles
Includes Viton O-ring (1302N36) for reliable sealing under pressure and temperature
4 mm Allen drive - fits standard tools; no specialist kit needed
Laser-etched logo, OEM-mounting compatibility, zero modification required
