afe QUANTUM Intake Replacement Air Filter (5-1/2x4-1/4)IN F x(8-1/2x7-1/4)IN B x(5-3/4x4-1/2)IN T x9IN H Cadillac-CTS-2016 If you are installing this

If you are installing this into the 2000-2009 Honda S2000

Like all other Injen products

75 IN Diameter 5 IN TA-4107B

2002-2007 Subaru WRX/STi (Supersedes WS-RFL)

afe QUANTUM Intake Replacement Air Filter (5-1/2x4-1/4)IN F x(8-1/2x7-1/4)IN B x(5-3/4x4-1/2)IN T x9IN H Cadillac-CTS-2016 If you are installing thisQuantum Pro DRY S air filter by aFe Power is specifically designed for the Quantum Series cold air intake systems and feature an injection molded base and top for lighter weight and rigidity. The newly designed base includes a built in, 3 angle velocity stack for smooth, even airflow. The Quantum Pro DRY S filter is a 360 degree radial flow air filter with oil free, 3 layer progressively finer porosity synthetic media for optimum flow, filtration and