SPDZ1 K-Series 4-2-1 Header for 04-08 TSX / 03-07 Euro Accord CL7 CL9SPDZ1 K Series 4 2 1 Header 2004 2008 Acura TSX 2003 2007 Euro Accord CL7 CL9 Unleash the true potential of your K Series engine. The SPDZ1 4 2 1 Tri Y Header is precision engineered to deliver maximum horsepower, torque, and throttle response for your Acura TSX or Euro Accord CL7 CL9. Whether youre chasing faster lap times, harder pulls on the street, or just want your K24 to breathe the way it should, this header is the upgrade your build has been