A C&L mass air housing is one of the best upgrades for a 5.0 Mustang. By simply replacing the restrictive factory MAF housing with this 73mm piece from C&L you are on your way to providing your 5.0 with the proper amount of air in a performance situation. The C&L MAF housing re-uses the factory MAF electronics and uses a sampling tube to calibrate for the proper injectors. MAF Housing and one calibration tube is included. Choose your calibration above or you will be sent the standard 19# sampling tube.