Features: * 100% test before shipment * The reduction of harmful emissions * The increasing of fuel economy * The improvement of engine performance * Prevent premature failure of the catalytic converter Specification: OE number: 15156, 15564, 234-4342, 234-4668, 12584925, 12587785, 12590790, 12594452, 12596558 Replacement: Direct Plug-In Replacement Condition: 100% Brand New Note: Please confirm the OE number before purchasing!!! Fitment: For Chevrolet Silverado 1500 5.3L 2003-2005 For Chevrolet Tahoe 5.3L 2003-2005 For GMC Sierra 1500 5.3L 2003-2005 For GMC Yukon 5.3L 2003-2005 .
