Thank you Naudi90. I had gotten my answer on the Mercedes forum. However, the price I paid at the local Mercedes dealership ( BMW and Mercedes Benz of Bowling Green ) was $1.40 each. I also bought the sealant Part Number 003-989-98-20-10. It was in a really neat and easy to use but over priced tube. The sealant was $19.50. Thank you again for your response.