Audi a3 a4 a6 a8 q7 A/C O-Ring caps valve cores KIT (100 pieces, 20 different sizes) A/C O-Ring Kit Kit Contains: 20 Different Sizes with a Total of 100 O-Rings. 10 Valve Cores, 5 each of Black, Red and Blue Caps Brand NEW part with full 1 year warranty. Audi part# 21 9808 206, check fit below. Recently made by SANTECH, not been lying around. Please see FITMENT CHART below, under PRODUCT DESCRIPTION. Email us your VIN for any questions.