This radiator cap from Febi is designed to fit various VW and Audi models, including the Golf Mk4, Mk4 GTI, and Audi Q7 4L/4LB. It is made of durable plastic with a blue color and a thread size of M63 x 3.0. The cap has an opening pressure of 1.5 bar and is classified as a coolant tank cap. Please use the make and model tool to ensure fitment for your specific vehicle. If you are unsure, please contact us. The part number is 14700, and it is compatible with OE numbers 1J0 121 321 B. Please ensure the product is installed by a competent individual. Products are usually supplied without fitting instructions. Cross-references include 3RG 807514, 7 SEVEN PARTS SV2300431A, and others.