• Thread dimension: M45x3.0 • Includes a quick coupling to radiator caps for increased safety and reduced task time • Diameter: 56 mm • Application: • Audi (1975-1993: male thread on expansion tank), VW (Beetle 1975-1993 male thread on expansion tank, Golf 1983-1992) • Made of light and sturdy ABS • Included in BE400P24 set • Sold individually