To reduce costs without using brackets and protection members with high strength and rigidity.

In this engine, a fuel injection valve 20 is disposed at a portion facing an intake port 2b of a cylinder head 2, an intake manifold 6 is connected with the intake port 2b, a sound absorbing material 25 is disposed in a space between the fuel injection valve 20 and a connection portion with the intake manifold 6, and cover member 26 for press fixing the sound absorbing material 25 to the cylinder head 2 is fixed. In this case, a recess groove 25b are formed on the sound absorbing material 25 along the wiring route of a wire harness 28, and the wire harness 28 is disposed in the recess groove 25b while covered with cover member 26.