COMPATIBLE WITH ( 2001-2004 CHEVY SILVERADO 2500HD/3500 6.6L V8 TURBO MODELS) COMPATIBLE WITH ( 2001-2004 GMC SIERRA 2500HD/3500 6.6L V8 TURBO MODELS) Easy to install with simple tools It's the ultimate performance Air intake Kit with higher explosive horsepower output The air intake kit can help your engine to draw more air resulting in better throttle response Item Condition: Brand New All necessary mounting hardwares, vacuum hoses and reducers will be included like shown in the picture. No additional parts will be needed for installation after you purchase this kit. Make note that not all 2004 model year vehicles are equipped with the LB7 type. This air intake kit will only fit 2004 model year vehicles with LB7 types. 2004 model year vehicles with the LB7 type can be identified by VIN number. The 8th number of the VIN will be "1" on 2004 model year vehicles with the LB7 type.