In a V-type multi-cylinder engine, a first fuel supply conduit is connected to fuel-injection valves in a first throttle body group corresponding to the first bank, and a second fuel supply conduit is connected to fuel injection valves in a second throttle body group corresponding to the second bank. A pair of first and second side plates connect adjacent ends of the first and second throttle body groups together. A distance between respective throttle bodies located in two ends of the first throttle body group is set shorter than a comparable distance between the throttle bodies located in two ends of the second throttle body group. A joint part for connectively receiving the fuel hose is provided at an end of the first fuel supply conduit in a way that the joint part is arranged between the two side plates.