Compare Maximum number of 4 items selected Representative Image Nickson Exhaust Pipe Flange Gasket - 31601 Part #: 31601 Line: NIC Nickson Exhaust Pipe Flange Gasket Manufacturer's Defect Warranty Material: Fiber, Steel Style: Flat Inside Diameter (in): 2-1/16 Inch Bolt Hole Diameter (in): 1/2 Inch Number Of Bolt Holes: 4 Bolt Hole Center To Center (in): 2, 2-1/8, 2-11/16 Inch Show More Show Less