Exhaust Flange ALEEIK Split Flange,2 Inch Split Flange Oval Split Universal Carbon Steel Exhaust 2.25 ID Triangle Flange 3125 (5/16) Bolt Hole Center to Center: 2., 9375 (2 15/16) Bolt Hole Diameter: . These heavy-duty triangle exhaust split flanges are perfect for your custom exhaust projects! This 2-pack gives you everything needed for connecting 2 OD flared Y pipes with their 2.25 inner diameter design Bolt Hole Center to Center: 2., 9375 (2 15/16) , Bolt Hole Diameter: ., 5 (1/2) Regardless of the vehicles this item is advertised to fit, you must check your pipe size as this item only fits applications with 2 OD flared pipe. For Use With 2 Flared Pipe. Bolts to Manifold on Left or Right Side of Flared Y-Pipe; Downstream SIde of Connection Product Description: Finish:Mild Steel Dimensions: Flange ID: 2., 28125 (2 9/32) Flange Length: 4., 9375 (4 15/16) Flange Width: 3., 75 (3 3/4) Flange Thickness: . Best Flange Kit for 2×4 Troffer Lighting Installations – Trowbridge Electrical Application: Universal fit application for mostly any car.