This O-ring from Febi Bilstein, part number 33672, is a high-quality seal designed for oil coolers in automatic transmissions. It features an outer diameter of 18 mm, a thickness of 2.5 mm, and an inner diameter of 13 mm. This part is compatible with various VW and Audi models. Febi Bilstein is known for OE matching quality and precision fit, ensuring reliable performance. The product is shipped from the UK and comes with a no-leak guarantee. For any queries regarding fitment, please contact the seller. The product is supplied as a single unit and should be installed by a competent individual.