S&B CAI2-FMM-0304 JLT Cold Air Intake Kit 03-04 Mach 1 No Tuning RequiredJLT Next Generation Cold Air Intake system for the 2003 and 2004 MACH I in black textured plastic Finish. This replaced our original Cold Air Intake kit in January 2012. Intake Tube Using the original JLT CAI as a guide, we molded, sculpted and perfected everything until we had the best looking, fitting and performing system you can buy. The JLT tube is 4 1 4 inch ID, roto molded plastic to resist engine heat and keep the Intake air charge nice and