Representative Image Nickson Catalytic Converter Gasket - EG24100 Part #: EG24100 Line: NIC Nickson Catalytic Converter Gasket Manufacturer's Defect Warranty Material: Fiber, Steel Style: Flat Inside Diameter (in): 2-1/2 Inch Outside Diameter (in): 3-5/16, 3-11/16 Inch Bolt Hole Diameter (in): 1/2 Inch Center Hole Size (in): 2-1/2 Inch Number Of Bolt Holes: 4 Bolt Hole Center To Center (in): 2-1/2, 2-13/16 Inch Number Of Port Holes: 1 Show More Show Less