Vehicle Fitment- Catalyst converter fits Cobalt 2005 2006 2007 2.2L, Ion 2005 2006 2007 2.2L, HHR 2007 2.2L, G5 2007 2.2L. Part Number: Catalytic converter fit for 54807. High Performance - catalytic converters internal Ceramic substrates contain high-load precious metal catalysts to enhance purification efficiency and intensity. A new catalytic convertor will provide you with excellent clean air performance, restore the quietness of your vehicle, Giving you the best driving experience. Stainless Steel Out Shell - The high flow catalytic converters with heavy-duty stainless steel construction feature maximum durability. Firmly welded connections can withstand high temper and pressures for longer service life. High Flow Performance - Our catalytic converters are built to meet OEM specifications and have EPA certification. They also feature a high flow design to increase conversion efficiency and vehicle power without sacrificing flow rate. Attention - Our catalytic converters have strict production procedures and comply with EPA standards and Obd3 standards. However, due to the increased emission standards in California, Colorado, New York, and Maine, no sales were carried out in these states.