This catalytic converter from EXHAUSTED EXHAUSTS is a direct replacement for the 2002-2004 Oldsmobile Silhouette with FWD and a 3.4L engine. It comes with bolts and seal for easy installation and features a ceramic substrate material. The connection type is bolt-on and it has a finish that is uncoated. It also has an EPA certification and is compatible with OE/OEM part number 55274. Please note that this product cannot be sold to customers in California and it is designed to be installed on the front exhaust system of the vehicle, post-catalyst. It also does not fit universal applications. Buy with confidence as this product comes with a 1-month manufacturer warranty.