The Cometic 04+ VW Golf GTI/05+ Jetta/Passat TFSI/05+ Audi A3/A4/A6/06+ TT 16v 2.0L 83.5mm .051 inch is a high-performance gasket for engines of select Volkswagen, Audi, and other related models. This gasket is designed to provide superior sealing and durability, and is made from a proprietary multi-layer steel construction that is resistant to high temperatures and pressure. The gasket features a .051 inch thickness and is 83.5mm in diameter, making it ideal for engines with tight tolerances. The gasket is also designed to provide superior sealing and corrosion protection, ensuring a longer lifespan for your engine.