All Direnza air induction systems are designed in-house by Direnza engineers. Designed to replace the OEM Curpa's airbox, offering more surface area compared to the standard filter and significantly enhancing air flow into the 1.8T engine boosting your car's soundtrack and performance. ---Crinkle wrapped heat shield ---Supplied with a high quality cone filter ---Powder coated alloy pipework ---Comprehensive bolt on kit with hardware included Fitment Audi TT 180 8N3 1.8T 1998-2006 models Audi TT 225 8N3 1.8T 1998-2006 models Audi S3 8L 1.8T 1999-2003 models Volkswagen Golf MK4 1.9TDI PD130 2000-2006 models Seat Leon 1M1 Cupra 1.8T 1996-2006 models.