2007 GMC Sierra 2500 HD Classic Engine: 6.0L V8;EngineVIN: U; Molded Rubber;. Part Type: Fuel Injection Throttle Body Mounting Gasket. Throttle Body Gasket Material: Molded Rubber. Ensure that this part fits your vehicle by entering your vehicle's Year, Make, Model, Trim, and Engine in the Compatibility Table.