This is our CTS Turbo universal 4" cone filter with a tapered design to fit in tight spots.  These filters are used in our MK4 and MK5 R32 big turbo kits and can also be used with custom big turbo applications. Product Details: 4.0" Inlet x 8.75" Long x 6.0" Wide High quality molded silicon base and cap Stainless steel clamp