This piece specifically fits the model made by the following author. By purchasing this model, it means that you have taken responsibility for making this part fit.
Author of the base model: Hum3d
Formats: Z3D,OBJ
3D Model Specificatons 
Low Quality Verticies - 1,066
Low Quality PolyCount (Traingles) - 1,008
Medium Quality Verticies - 4,146
Medium Quality PolyCount (Triangles) - 4,002
Textures - No
Materials - No
Uv Mapped - No
*3D Model Disclaimer - This Is Not A Real Life Part And Is Meant For 3D Model Design Only