Filter paper - Pleated and impregnated with optimal pore size to filter out air contaminates. The paper structure is stiffened by embossing and pleat spaces. Precision designed fold geometry - The cut edges are glued on the front to retain their shape and function even in damp conditions. Elastic sealing compound - The pleated paper is set in a compressible heat and tear resistant elastic compound, manufactured from polyurethane foam, silicone or similar. The Air Filter is perfectly matched to the filter housing to ensure no unfiltered air enters the engineGenuine Service Parts are identical in quality to parts used in vehicle production and fit first time, every time, saving you time and money in your workshop Also fits the following vehicles: Audi TT Mk1 1.8T 180HP, Audi TT Mk1 1.8T 225HP, Audi TT Mk1 3.2L V6 ,Audi A3 MK1 1.8T, Volkswagen Golf Mk4 1.8T. Volkswagen Golf Mk4 1.6Volkswagen Golf Mk4 2.0L, Volkswagen Golf Mk4 TDI, Volkswagen Golf Mk4 VR6,Volkswagen Jetta Mk4 1.8T,Volkswagen Jetta Mk4 1.6, Volkswagen Jetta Mk4 2.0L, Volkswagen Jetta Mk4 TDI Volkswagen New Beetle 2.0L, Volkswagen R32 Mk4