To reduce a parts count and man-hours for installation required for fixing a portion also serving as a holder to an engine side by a connection member such as a bolt or clip when installing to an injector, in a conventional fuel pipe structure wherein one end of a fuel pipe is also used as an injector fixing holder.

The injector 17 is directly fixed on the wall portion of an intake passage. On the other hand, a quick connector 30 is integrally provided at one end portion of the fuel pipe 16. When the quick connector 30 is put over the injector 17, the quick connector 30 is engaged and integrated with the injector 17, so that the fuel pipe 16 can be directly installed to the injector 17 in a single operation.