GET THE RIGHT PART -- Before purchasing, research to ensure that the part will fit your vehicle; enter all vehicle information (year, make, model, engine and trim) for compatibility and check qualifier notes EASY TO INSTALL -- Manufactured with precision bends and OE-style routings, hangers and connectors for easy installation (where applicable) Walker 53312 Exhaust Pipe 2.75" Inlet (ID) 2.5" Outlet (OD) for Chevrolet K2500. Made from aluminized steel for durability, Walker® premium pipe is... Made from aluminized steel for durability, Walker® premium pipe is manufactured with precision benders and fixture checked to ensure a precise fit for quick and easy installation. OE-STYLE PERFORMANCE -- Direct-fit design is fixture checked to ensure a precise fit that performs like original equipment Walker SoundFX Universal 17849 Universal Exhaust Exhaust Pipe 2.5 Inch Walker SoundFX Universal 18124 Universal Exhaust Muffler 2.5" Inlet (ID) 2.25" Outlet (OD) For Chevrolet C10 2.5 Inch Exhaust Pipe ) - Outlet Diameter (O.D. gt; HSS/HSCO End MillsHSS/HSCO End Mills INHIBITS CORROSION -- Durable aluminized-steel construction to inhibit corrosion and promote performance