Overview:Forms smooth transitions from one pipe diameter size to another. Available in various sizes.Features:Can be Used on All Brands Cotton Gauze Air FiltersKeeps your Filter at Optimum Performance LevelSpecifically Formulated Cleaner and Filter OilEasy to Use Pump and Squeeze BottlesOver 35 Years of Flowmaster QualityMaintenance Kit for Optimizing FlowEasy to Use Maintenance SystemSpecs: Brand: Flowmaster Clamping Type: U-Bolt Clamps Included: No Color: Gray Emission Code: 5 Finish: Aluminized Flanged Inlet: No Gasket Or Seal Included: No Grade Type: Performance Inlet Connection: Slip-Fit Inlet Diameter: 3 Inlet Inside Diameter: 3 Inlet Outside Diameter: 3.125 Material: Aluminized Steel Material Gauge: 16 Outlet Connection: Slip-Fit Outlet Diameter: 2.5 Outlet Inside Diameter: 2.375 Outlet Outside Diameter: 2.5 Pipe Bend Type: Mandrel Pipe Diameter: 3 Quantity: 1 Shape: Straight Type of Component: Reducer Welded Bracket Quantity: 0 Welded Hanger: No Part Number: R3025Emissions: This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.