It compensates for the 14mm height difference between the two coil types, ensuring a secure fit and proper seal with the valve cover. For Audi A4 1996-2001 (B5 - B5.5) 1.8T 20V engines. For Audi A4 2002-2005 (B6) 1.8T 20V engines.
This product would be ideal for individuals upgrading their 1.8T Audi 2.0FTS models to use 2.0T/R8 coil packs that are compatible with the adapter made for 2.0TFSI coils.
