A fuel delivery system for an internal combustion engine, the system comprising a common rail fuel reservoir having a primary rail axis and comprising a plurality of outlets at spaced locations along said rail axis and a plurality of fuel injectors arranged at spaced locations with respect to said rail axis. Each injector comprises an injector inlet, said plurality of fuel injectors defining first and second groups of injectors. The system further comprises first and second groups of pipes of substantially equal length, wherein each of said first group of pipes is of a first common design and connects the injector inlet of one of said first group of fuel injectors to an outlet displaced relative to said one of said first group of fuel injectors in a first direction substantially parallel to said rail axis, and each of said second group of pipes is of a second common design and connects the injector inlet of one of said second group of fuel injectors to an outlet displaced relative to said one of said second group of fuel injectors in a second direction substantially parallel to said rail axis and antiparallel to said first direction. Not more than one of said first group of injectors is disposed adjacent to said second group of injectors.