For Audi A4/Quattro Front Mount Intercooler+Piping Kit (Silver) - B6 Typ 8E 8H High Performance Bar and Plate Turbo Racing Design Helps Reducing Engine Inlet Temperature; Increase 65% Air Flow comparing with other Standard Piping Allow More Horsepower at the Same Boost Level and Even More Power at the Higher Boost Level Direct Bolt-On Front-Mount Installation; Easy to Install Intercooler Size: 30.5"(L) X 9.5"(H) X 2"(W); Core Size: 18.5"(L) X 9.5"(H) X 2"(W); Inlet/Outlet: 2.5"/2.5"; 2.75" Piping Diameter with Blow Off Valve Port Insertion