aFe Power 48-46208&nbsp;2-1/2" Stainless Steel&nbsp;Y-Pipe 409 Stainless Steel for Durability True 2 Into 1 Mitered Merge Collector Eliminates Dead Zone for Improved Flow This "Y-Pipe" Only fits the Jeep Wrangler Unlimited (4 Door) with automatic transmission Mandrel-bent 2" Piping Transitions into 2.5" Piping For Better Power No Modification to Stock System or Location for Hassle-Free Installation